Term
Original Word Doc Courtesy of BMCS Vredenburg (2000) (Available on Boatswainsmate.net)
Additional Contributors from Aug 2000 - Apr 2006:
David Browning, USCGAUX - Roseburg, Oregon, BM2 Paul Lentini - STA Toledo, BM2 Bryan Resch - STA Panama City, BM3 Robert Finke - CGC Midgett, BM2 Karyn Boxwell - MSU Galveston, Robert Thomas - CGC Midgett, BM2 Chad Turner - CGC Midgett, BM2 Seth Thomas - CGC Flyingfish, BM3 Thomas Huntley - STA Cape Disappointment, BM2 Stacey Guild - STA Southwest Harbor, Andy Johnson, USCGAUX - Marin, CA, LCDR Alan Reagan - MSO Savannah, BM3 Chris Haun - STA Southwest Harbor, BM3 Aaron Plante - STA Toledo, BM3 Richard Shannahan - STA Yankeetown
Word Doc was imported into MS Excel, "scrubbed" and edited for import into Flashcard Machine by BM1 Robert Pierson, CGC Patoka. Additional corrections were made, however, please feel free to contact BM1 Pierson by email if you find other errors. |
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Definition
| Disclaimer: Any study guide may have incorrect information, as everyone is human...including the BMs who've written the study guides (not to mention policy changes). This is why it is critical that you read the appropriate manuals when studying, not just read the study guides. If you find something wrong, notify the study guide author so they can update it and submit a corrected copy. You are responsible for knowing the material, so I encourage you to hit the books first and use the study guides as a companion document to your studying. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog, you hear a prolonged blast from another vessel. This signal indicates a ________________-
A. sailboat underway
B. vessel underway, towing
C. vessel underway, making way
D. vessel being towed |
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Definition
C. vessel underway, making way
Answer: C, Rule 35.a In or near an area of restricted visibility, whether by day or night, a power driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is used to show the presence of a partly submerged object being towed?
A. a diamond shape on the towed object
B. an all-round light at each end of the towed object
C. a searchlight from the towing vessel in the direction of the tow
d. All of the above |
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Definition
D. All of the above
Answer: D, Rule 24.g.iii If an inconspicuous partly submerged vessel or object is being towed exceeds 100 meters in length, an all-round white light at least every 100 meters. Rule 24.g.iv If an inconspicuous partly submerged vessel or object is being towed a diamond shape will be shown at or near the aftermost extremity of the last vessel or object being towed. Rule 24.h. If it is impracticable for a vessel or object being towed to exhibit the lights or shapes prescribed, all measures shall be taken to light the vessel or object towed, or at least to indicate the presence of such vessel or object. |
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BOTH INTERNATIONAL & INLAND: At night, a barge being towed astern must display ___________.
A. red and green sidelights only
B. a white sternlight only
C. sidelights and a sternlight
D. one all-round white light |
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Definition
C. sidelights and a sternlight
Answer: C, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following may be used as a distess signal?
A. directing the beam of a searchlight at another vessel
B. A smoke signal giving off orange colored smoke
C. A whistle signal of one prolonged and three short blasts
D. International Code signal "PAN" spoken over radiotelephone |
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Definition
B. A smoke signal giving off orange colored smoke
Answer: B, Annex 87.1.j A smoke signal giving off orange-colored smoke indicate distress and need of assistance. |
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Term
BOTH INTERNATIONAL & INLAND: If your vessel is approaching a bend and you hear a prolonged blast from around the bend, you should ______.
A. back your engines
B. Stop your engines and drift
C. answer with one prolonged blast
D. sound the danger signal |
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Definition
C. answer with one prolonged blast
Answer: C, Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: Failure to understand the course or intention of an approaching vessel should be indicated by _____.
A. one short blast
B. one prolonged blast
C. Not less than five short blasts
D. not less than five prolonged blasts |
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Definition
C. Not less than five short blasts
Answer: C, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: If you are the stand-on vessel in a crossing situation, you may take action to avoid collision by your maneuver alone. When may this action be taken?
A. At any time you feel it is appropriate
B. only when you have reached extremis
C. when you determine that your present course will cross ahead of the other vessel.
D. when it becomes apparent to you that the give-way vessel is not taking appropriate action |
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Definition
D. when it becomes apparent to you that the give-way vessel is not taking appropriate action
Answer: D, Rule 17.a.ii Where one of two vessels is to keep out of the way of another, the other shall keep her course and speed. The latter vessel may, however, take action to avoid collision by her maneuver alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: Your 15-meter tug is underway and crossing a deep and narrow channel. A large container vessel is off your port bow on a steady bearing. Which statement is true concerning this situation?
A. you should maintain course and speed
B. The container vessel has the right of way as it is the larger vessel
C. You are not to impede the safe passage of the container vessel in the channel
D. none of the above |
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Definition
C. You are not to impede the safe passage of the container vessel in the channel
Answer: C, Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: If your vessel is underway in fog and you hear one prolonged and three short blasts, this is a __________.
A. vessel not under command.
B. sailing vessel
C. vessel being towed (manned)
D. vessel being towed (unmanned) |
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Definition
C. vessel being towed (manned)
Answer: C, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A pilot vessel on pilotage duty at night will show sidelights and a sternlight ____________.
A. when at anchor
B. only when making way
C. at any time when underway
D. only when the identifying lights are not being shown |
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Definition
B. only when making way
Answer: B, Rule 29.a A vessel engaged on pilotage duty shall exhibit an all-round white over all-round red at the masthead, when underway a sidelights and a sternlight, and anchor lights when at anchor. When not engaged on pilotage duty shall exhibit the lights or shapes prescribed for a similar vessel of her length. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel underway in fog making NO way must sound what signal?
A. one long blast
B. two prolonged blast
C. one prolonged blast
D. one prolonged and two short blasts |
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Definition
B. two prolonged blast
Answer: B, Rule 35.b A power driven vessel underway, but stopped and making no way through the water, shall sound at intervals of not more than 2 minutes, 2 prolonged blasts in succession with an interval of about 2 seconds between them. |
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Term
BOTH INTERNATIONAL & INLAND: A 95-meter vessel aground shall sound which fog signal?
A. a rapid ringing of a bell for 5 seconds every 2 minutes
B. a whistle signal of one short, one prolonged, and one short blast
C. A long blast of the whistle at intervals not to exceed one minute
D. A rapid ringing of a bell for 5 seconds, preceded and followed by three separate and distinct strokes on the bell, every minute |
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Definition
D. A rapid ringing of a bell for 5 seconds, preceded and followed by three separate and distinct strokes on the bell, every minute
Answer: D, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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BOTH INTERNATIONAL & INLAND: Which statement is true concerning a vessel equipped with operational radar?
A. She must use this equipment to obtain early warning of risk of collision.
B. the radar equipment is only required to be used in restricted visibility.
C. the use of a radar excuses a vessel from the need of a look-out.
D. the safe speed of such a vessel will likely be greater than that of vessels without radar. |
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Definition
A. She must use this equipment to obtain early warning of risk of collision.
Answer: A, Rule 7.b Proper use shall be made of radar equipment if fitted and operational, including long-range scanning to obtain early warning of risk of collision and radar plotting or equivalent systematic observation of detected objects. |
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Term
BOTH INTERNATIONAL & INLAND: A 200-meter vessel is aground in fog. Which signal is optional?
A. a bell signal
B. a gong signal
C. A whistle signal
D. All of the above |
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Definition
C. A whistle signal
Answer: C, Rule 35.h (Int) and Rule 35.g (Inland). A vessel aground shall give the bell signal and if required the gong signal as if they were anchored and shall, in addition, give three separate and distinct strokes on the bell immediately before and after the ringing of the bell. A vessel aground may in addition sound an appropriate whistle signal. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is a distress signal?
A. a triangular flag above or below a ball
B. the international code signal of distress indicated by "JV"
C. A green smoke signal
D. flames on the vessel as from a burning tar barrel |
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Definition
D. flames on the vessel as from a burning tar barrel
Answer: D, Annex IV, 87.1.h Flames on a vessel, as from a burning tar barrel, oil barrel, etc, is a signal used to indicate distress and need of assistance. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel must show forward and after masthead lights when making way?
A. a 75-meter vessel restricted in her ability to maneuver
B. a 100-meter sailing vessel
C. a 150-meter vessel engaged in fishing
D. a 45-meter vessel engaged in towing |
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Definition
A. a 75-meter vessel restricted in her ability to maneuver
Answer: A, This one is real tough, thanks to BM2 Paul Lentini from Sta Toledo for finding the answer. Rule 27.b.iii. A vessel restricted in her ability to maneuver, except a vessel engaged in mineclearance operations, shall exhibit, when making way through the water, masthead lights (plural), sidelights and a sternlight, in addition to the lights prescribed in subparagraph (b)(i). A 150 meter fishing vessel engaged in fishing would show green over white all-round lights (Rule 26.b.i), a single masthead light abaft and above the green over white (Rule 26.b.ii), and sidelights/sternlight (Rule 26.b.iii). |
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Term
BOTH INTERNATIONAL & INLAND: A vessel must proceed at a safe speed _______________-.
A. in restricted visibility
B. in congested waters
C. during darkness
D. at all times |
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Definition
D. at all times
Answer: D, Rule 6 Every vessel shall at all times proceed at a safe speed so that she can take proper and effective action to avoid collision and be stopped within a distance appropriate to the prevailing circumstances and conditions. |
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Term
BOTH INTERNATIONAL & INLAND: A light signal of three flashes means ___________.
A. "I am in doubt as to your actions:"
B. "My engines are full speed astern"
C. "I desire to overtake you"
D. "I am operating astern propulsion" |
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Definition
D. "I am operating astern propulsion"
Answer: D, Rule 34.b.i. A vessel may supplement whistle signals by light signals. Three flashes mean "I am operating astern propulsion" |
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BOTH INTERNATIONAL & INLAND: A sailing vessel underway may exhibit _________.
A. a red light over a green light at the masthead
B. a green light over a red light at the masthead
C. two white lights in a vertical line at the stern
D. an all-round white light at the bow |
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Definition
A. a red light over a green light at the masthead
Answer: A, Rule 25.c. A sailing vessel underway may, in addition to sidelights and sternlight, exhibit on her mast an all-round red over an all-round green light. But these lights shall not be shown if using a single lantern combining the sidelights and sternlight) |
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BOTH INTERNATIONAL & INLAND: The word vessel, in the rules, includes _________.
A. sailing ships
B. nondisplacement craft
C. seaplanes
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 3.a. The word vessels includes every description of water craft, including nondisplacement craft and seaplanes, used or capable of being used as a means of transportation on water. |
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Term
BOTH INTERNATIONAL & INLAND: A sailing vessel with the wind abaft the beam is navigating in fog. She should sound _____.
A. three short blasts
B. one prolonged blast
C. one prolonged and two short blasts
D. two prolonged blasts |
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Definition
C. one prolonged and two short blasts
Answer: C, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following actions would indicate a distress signal?
A. firing of green star shells
B. sounding 5 short blasts on the whistle
C. answering a one blast whistle signal with two blasts
D. having a flaming barrel of oil on deck. |
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Definition
| Answer: D, Annex IV, 87.1.h Flames on a vessel, as from a burning tar barrel, oil barrel, etc, is a signal used to indicate distress and need of assistance. |
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Term
BOTH INTERNATIONAL & INLAND: If a towing vessel and her tow are severely restricted in their ability to change course, they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is _____.
A. pushed ahead
B. towed alongside
C. towed astern
D. any of the above |
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Definition
| Answer: D, Rule 27.c. A vessel engaged in a towing operation which severely restricts the towing vessel and her tow in their ability to deviate from their course shall show both the lights (and shapes) for towing and the lights(and shapes) for restricted in her ability to maneuver.. |
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Term
BOTH INTERNATIONAL & INLAND: If two sailing vessels are running free with the wind on the same side, which one must keep clear of the other?
A. The one with the wind closest abeam
B. The one with the wind closest astern
C. the one to leeward
d. the one to windward |
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Definition
d. the one to windward
Answer: D, Rule 12.a. When two sailing vessels are approaching one another so as to involve risk of collision one shall keep out of the way of the other. If the each has the wind on different sides, the vessel which has the wind on her port shall keep out of the way of the other. If both have the wind on the same side, the one which is to windward shall keep out of the way of the vessel which is to leeward. If a vessel with the wind on the port side sees a vessel to windward and cannot determine what side she has her wind on, she shall keep out of the way of the other. |
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Term
BOTH INTERNATIONAL & INLAND: A masthead light may be located at other than the fore and aft centerline of a vessel ______.
A. less than 20 meters in length
B. less than 12 meters in length
C. which has separate sidelights carried on the outboard extremis of the vessel's breadth.
D. engaged in fishing. |
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Definition
B. less than 12 meters in length
Answer: B, Rule 21.c.iii (international) The masthead light or all-round white light on a power-driven vessel of less than 12 meters in length may be displaced from the fore and aft centerline of the vessel if centerline fitting is not practicable, provided that the sidelights are combined in one lantern which shall be carried on the fore and aft centerline of the vessel or located as nearly as practicable in the same fore and aft line as the masthead light or the all-round white light. Rule 21.c (inland) a power driven vessel of less than 12 meters in length may, in lieu of the lights prescribed in paragraph (a) of this rule, exhibit an all-round white light and sidelights. |
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Term
BOTH INTERNATIONAL & INLAND: The NAVRULES define a "Vessel not under command" as a vessel which _______
A. from the nature of her work is unable to keep out of the way of another vessel
B. through some exceptional circumstance is unable to maneuver as required by the rules
C. By taking action contrary to the rules has created a special circumstance situation
D. Is moored, aground or anchored in a fairway. |
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Definition
B. through some exceptional circumstance is unable to maneuver as required by the rules
Answer: B, Rule 3.f. The term "vessel not under command" means a vessel which, through some exceptional circumstance, is unable to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Additional light signals are provided in the annexes to the rules for vessels _____.
A. engaged in fishing
B. not under command
c. engaged in towing
D. under sail |
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Definition
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Term
BOTH INTERNATIONAL & INLAND: Which vessel may combine her sidelights in one lantern on the fore and aft centerline of the vessel?
A. a 16-meter sailing vessel
B. a 25-meter power-driven vessel
C. a 28-meter sailing vessel
D. any non-self-propelled vessel |
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Definition
A. a 16-meter sailing vessel
Answer: A, Rule 25.b. A sailing vessel of less than 20 meters in length may combine into one lantern her sidelights and sternlight to be carried near the top of the mast where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: The duration of a prolonged blast of the whistle is _________.
A. 2 to 4 seconds
B. 4 to 6 seconds
C. 6 to 8 seconds
D. 8 to 10 seconds. |
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Definition
B. 4 to 6 seconds
Answer: B, Rule 32.c. The term "prolonged blast" means a blast of from 4 to 6 seconds duration. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel "restricted in her ability to maneuver" is one which __________.
A. from the nature of her work is unable to maneuver as required by the rules.
B. through some exceptional circumstance is unable to maneuver as required by the rules
C. due to adverse weather conditions is unable to maneuver as required by the rules
D. has lost steering and is unable to maneuver |
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Definition
A. from the nature of her work is unable to maneuver as required by the rules.
Answer: A, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: When underway in restricted visibility, you might hear, at intervals of two minutes, any of the following fog signals EXCEPT _______.
A. one prolonged blast
B. two prolonged blasts
C. one prolonged and two short blasts
D. ringing of a bell for five seconds |
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Definition
D. ringing of a bell for five seconds
Answer: D, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel of less than 20 meters in length may display a basket as a dayshape when she is engaged in ______.
A. trawling
B. diving operations
C. trolling
D. None of the above |
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Definition
| Answer: D. Rule 26.b.i. A vessel when engaged in trawling, by which is meant the dragging through the water of a dredge net or other apparatus used as a fishing appliance shall exhibit two all-round lights in a vertical line, the upper being green and the lower being white, or a shape consisting of two cones with their apexes together in a vertical line one above the other. |
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Term
BOTH INTERNATIONAL & INLAND: A bell is used to sound a fog signal for a __________.
A. power-driven vessel underway
B. sailing vessel at anchor
C. vessel engaged in fishing
D. vessel not under command |
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Definition
B. sailing vessel at anchor
Answer: B, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: You are seeing another vessel approaching, and its compass bearing does not significantly change. This would indicate that ___________.
A. you are the stand-on vessel
B. risk of collision exists
C. a special circumstances situation exists
D. the other vessel is dead in the water |
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Definition
B. risk of collision exists
Answer: B, Rule 7.d. Risk of collision shall be deemed to exist if the compass bearing of an approaching vessel does not appreciably change, and such risk may sometimes exist even when an appreciable bearing change is evident, particularly when approaching a very large vessel or a tow, or when approaching a vessel at very close range. |
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Term
BOTH INTERNATIONAL & INLAND: What lights are required for a barge being towed alongside?
a. sidelights and a sternlight
B. sidelights, a special flashing light, and a sternlight
C. Sidelights and a special flashing light
D. sidelights, a towing light, and a sternlight |
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Definition
a. sidelights and a sternlight
Answer: A, Rule 24.f.ii. A vessel being towed alongside shall exhibit a sternlight and at the forward end, sidelights. For Inland rules a vessel being towed alongside also requires a special flashing light at the forward end. |
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Term
BOTH INTERNATIONAL & INLAND: A towing vessel pushing a barge ahead and rigidly connected in a composite unit shall show the lights of ________.
A. a vessel towing by pushing ahead
B. a power-driven vessel, not towing
C. a barge being pushed ahead
D. either answer A or answer B |
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Definition
B. a power-driven vessel, not towing
Answer: B, Rule 24.b. When a pushing vessel and a vessel being pushed ahead are rigidly connected in a composite unit they shall be regarded as a power driven vessel and exhibit the lights of a single vessel. |
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Term
BOTH INTERNATIONAL & INLAND: You are the watch officer on a power-driven vessel and notice a large sailing vessel approaching from astern. You should
A. slow down
B. sound one short blast and change course to starboard
C. sound two short blasts and change course to port
D. hold your course and speed |
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Definition
D. hold your course and speed
Answer: D, Rule 13.a. Any vessel overtaking any other shall keep out of the way of the vessel being overtaken. |
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Term
BOTH INTERNATIONAL & INLAND: You see a vessel's green sidelight bearing due east from you. The vessel might be heading _____.
A. east
B. northeast
C. northwest
D. southwest |
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Definition
D. southwest
Answer: D. If you see a vessel's green sidelight which is on her starboard side. If a vessels starboard side is to your east, she must be heading south, southwest, or west. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel shall be deemed to be overtaking when she is in such a position, with reference to the vessel she is approaching, that she can see at night __________.
A only the sternlight of the vessel.
B. the sternlight and one sidelight of the vessel
C. only a sidelight of the vessel
D. any lights except the masthead lights of the vessel |
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Definition
A only the sternlight of the vessel.
Answer: A, Rule 13.b. A vessel shall be deemed to be overtaking when coming up with another vessel from a direction more than 22.5 degrees abaft her beam; that is, in such a position with reference to the vessel she is overtaking, that at night she would be able to see only the sternlight of that vessel but neither of her sidelights. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel trawling will display a _________________.
A red light over a white light
B. green light over a white light
C. white light over a red light
D. white light over a green light |
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Definition
B. green light over a white light
Answer: B. Rule 26.b.i. A vessel when engaged in trawling shall exhibit at the mast an all-round green over an all-round white light (or a shape consisting of two cones with their apexes together), a masthead light abaft of and higher than the all-round green light (a vessel of less than 50 meters may not show this light), and when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: If it becomes necessary for a stand-on vessel to take action to avoid collision, she shall NOT, if possible, ____________.
A. decrease speed
B. increase speed
C. turn to port for a vessel on her own port side
D. turn to starboard for a vessel on her own port side |
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Definition
C. turn to port for a vessel on her own port side
Answer: C, Rule 17.c. A power-driven vessel, if the circumstances of the case admit, not alter course to port for a vessel on her own port side. |
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Term
BOTH INTERNATIONAL & INLAND: Your vessel is NOT making way, but is not in any way disabled. Another vessel is approaching you on your starboard beam. Which statement is true?
A. the other vessel must give way since your vessel is stopped.
B. your vessel is the give-way vessel in a crossing situation
C. You should be showing the lights or shapes for a vessel not under command.
D. You should be showing the lights or shapes for a vessel restricted in her ability to maneuver. |
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Definition
B. your vessel is the give-way vessel in a crossing situation
Answer: B, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. Nothing in the rules relieves a vessel underway, not making way of being the give way vessel by Rule 15. Answer C or D is not justified because you do not meet the definition of "not under command" or "restricted in ability to maneuver" |
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Term
BOTH INTERNATIONAL & INLAND: A sailing vessel which is also propelled by machinery shall show during daylight hours a _____.
A. black diamond
B. black cone
C. black ball
D. basket |
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Definition
B. black cone
Answer: B. Rule 25.e. A vessel proceeding under sail when also being propelled by machinery shall exhibit forward where it can best be seen a conical shape, apex downwards. |
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Term
BOTH INTERNATIONAL & INLAND: The rules concerning lights shall be complied with in all weathers from sunset to sunrise. The lights _______________.
A. Shall be displayed in restricted visibility during daylight hours
B. need not be displayed when no other vessels are in the area
C. shall be set at low power when used during daylight hours
D. need not be displayed by unmanned vessels |
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Definition
A. Shall be displayed in restricted visibility during daylight hours
Answer: A. Rule 20.c. The lights prescribed by these rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary. |
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Term
BOTH INTERNATIONAL & INLAND: Two vessels meeting on a "head on" situation are directed by the rules to _____.
A. alter course to starboard and pass port to port
B. alter course to port and pass starboard to starboard
C. decide on which side the passage will occur by matching whistle signals
D. slow to bare steerageway |
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Definition
A. alter course to starboard and pass port to port
Answer: A. Rule 14.a. Unless otherwise agreed, when two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision, each shall alter her course to starboard so that each shall pass on the port side of the other. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel is engaged in fishing when ______.
A. her gear extends more than 100 meters from the vessel
B. she is using any type of gear, other than lines
C. she is using fishing apparatus which restricts her maneuverability
D. she has any fishing gear on board |
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Definition
C. she is using fishing apparatus which restricts her maneuverability
Answer: C. Rule 3.d. The term "vessel engaged in fishing" means any vessel fishing with nets, lines, trawls, or other fishing apparatus which restricts maneuverability, but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict maneuverability |
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Term
BOTH INTERNATIONAL & INLAND: When shall the stand-on vessel change course and speed?
A. The stand-on vessel may change course and speed at any time as it has the right of way.
B. After the give way vessel sounds one blast in a crossing situation
C. when action by the give way vessel alone cannot prevent collision
D. when the two vessels become less than half mile apart |
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Definition
C. when action by the give way vessel alone cannot prevent collision
Answer: C. Rule 17.a. where one of two vessels is to keep out of the way, the other shall keep her course and speed However, the latter vessel may take action to avoid collision by her maneuver alone as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: A sailing vessel with the wind abaft the beam is navigating in restricted visibility. She should sound _____.
A. three short blasts
B. one prolonged blast
C. one prolonged and two short blasts
D. two prolonged blast |
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Definition
C. one prolonged and two short blasts
Answer: C Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: You are on watch, when you sight a vessel displaying a square flag below which is a ball. This indicates a vessel _______.
A. with trolling lines out
B. getting ready to receive aircraft
C. aground
D. in distress |
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Definition
D. in distress
Answer: D, Annex IV, 87.1.g. Any signal consisting of a square flag having above or below it a ball, or anything resembling a ball, is used to indicate distress or need of assistance. |
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Term
BOTH INTERNATIONAL & INLAND: Which factor is listed in the rules as one which must be taken into account when determining safe speed?
A. the construction of the vessel
B. the maneuverability of the vessel
C. the experience of the vessel personnel
D. all of the above |
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Definition
B. the maneuverability of the vessel
Answer: B, Rule 6.a.iii All vessels shall take the maneuverability of the vessel (especially her stopping distance and turning ability in the prevailing conditions) when determining a safe speed. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning seaplanes on the water
A. a seaplane must show appropriate lights but need not exhibit shapes
B. a seaplane should exhibit the lights for a vessel constrained by her draft
C. in situations where a risk of collision exists, a seaplane should always give way.
D. a seaplane on the water shall, in general, keep well clear of all vessels |
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Definition
| Answer: D, Rule 18.e (Int) and Rule 18.d (Inland) A seaplane on the water shall, in general, keep well clear of all vessels and avoid impeding their navigation. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel approaching your vessel from 235 degrees relative is in what type of situation?
A. meeting
B. overtaking
C. crossing
D. passing |
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Definition
B. overtaking
Answer: B, Rule 13.b. A vessel shall be deemed to be overtaking when coming up with another vessel from a direction more than 22.5 degrees abaft her beam; that is, in such a position with reference to the vessel she is overtaking, that at night she would be able to see only the sternlight of that vessel but neither of her sidelights. 235* is more than 22.5* abaft the port beam. |
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Term
BOTH INTERNATIONAL & INLAND: You are in charge of a power-driven vessel navigating at night. You sight the red sidelight of another vessel on your port bow. Its after masthead light is to the right of the forward masthead light. You should _______.
A. hold course and speed
B. alter course to port
C. stop engines
D. sound the danger signal |
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Definition
A. hold course and speed
Answer: A, Vsl is to your port and you see his port running light. Vessels aft masthead is to the right of his forward masthead light, which shows vessels heading is away from you. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in fog when you hear the rapid ringing of a bell for five seconds followed by the sounding of a gong for five seconds. This signal indicates a vessel ____________.
A. aground
B. more than 100 meters in length, at anchor
C. Fishing while making no way through the water
D. fishing in company with other vessels |
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Definition
B. more than 100 meters in length, at anchor
Answer: B, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: The wind is ESE, and a sailing vessel is steering NW. What fog signal should she sound?
A. One blast at one-minute intervals
B. One blast at two-minute intervals
C. Two blasts at one-minute intervals
D. One prolonged and two short blasts at two-minute intervals |
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Definition
D. One prolonged and two short blasts at two-minute intervals
Answer: D, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: At night, what lights are required to be shown by a dredge on the side of the dredge which another vessel may pass?
A. one red light
B. two red lights
C. One white lights
D. Two green lights |
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Definition
D. Two green lights
Answer: D, Rule 27.d. A vessel engaged in dredging or underwater operations, when restricted in her ability to maneuver, shall exhibit the lights for restricted in her ability of maneuver and, when an obstruction exists, exhibit two all-round red lights (or two balls) in a vertical line to indicate the side on which the obstruction exists, two all-round green lights (or two diamonds) in a vertical line to indicate the side on which another vessel may pass, and when at anchor shall not show the lights prescribed for anchored vessels. |
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Term
BOTH INTERNATIONAL & INLAND: What lights are shown by a vessel restricted in her ability to maneuver to indicate that the vessel is making way?
A. masthead lights, sidelights and sternlight
B. masthead lights and sidelights only
C. sidelights and sternlight only
D. sidelight only |
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Definition
A. masthead lights, sidelights and sternlight
Answer: A, Rule 27.b. A vessel restricted in her ability to maneuver (except a vessel engaged in mineclearance ops) shall exhibit where they can best be seen an all-round red over white over red light, or shapes of ball over diamond over ball. When making way through the water she shall show masthead lights, sidelights and a sternlight. When at anchor, in addition to the red over white over red, appropriate anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway and hear a vessel continuously sounding her fog whistle. This indicates the other vessel _______.
A. desires to communicate by radio
B. desires a pilot
C. is in distress
D. Is aground |
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Definition
C. is in distress
Answer: C, Annex IV, 87.1.b. A continuous sounding with any fog-signaling apparatus is a signal used to indicate distress or need of assistance. |
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Term
BOTH INTERNATIONAL & INLAND: While operating a power-driven vessel in fog, you see another vessel on radar who is half a mile distant on your port bow. You should _______.
A. sound the danger signal
B. exchange passing signals
C. sound one long blast
D. make no change in your fog signal |
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Definition
D. make no change in your fog signal
Answer: D, you don't exercise passing signals until you can visually see the vessel |
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Term
BOTH INTERNATIONAL & INLAND: A 30-meter tug is underway and not towing. At night, this vessel must show sidelights and _____.
A. one masthead light and a sternlight
B. two masthead lights and a sternlight
C. three masthead lights and a sternlight
D. a sternlight |
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Definition
A. one masthead light and a sternlight
Answer: A, Rule 23.a. A power driven vessel underway shall exhibit a masthead light forward, a second masthead light abaft and higher this light ( A vessel less than 50 meters may not exhibit this light), sidelights, and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in the fog, you hear a signal of one prolonged blast followed by three short blasts. This is the fog signal for a vessel _________.
A. towing
B. manned being towed
C. unmanned being towed
D. at anchor |
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Definition
| Answer: B, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning a vessel of 75 meters in length, at anchor?
A. she must show an all-round white light forward
B. She must show a second all-round white light aft
C. She may use her working lights to illuminate her decks
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 30.a. A vessel at anchor shall exhibit where it can best be seen one all-round white light or one ball in the forepart, and at or near the stern at another light at a lower level than the bow light. Rule 30.c. A vessel at anchor may, and a vessel of 100 meters or more in length shall, also use the available working or equivalent lights to illuminate her decks. |
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Term
BOTH INTERNATIONAL & INLAND: You are approaching another vessel. She is about one mile distant and is on your starboard bow. You believe she will cross ahead of you. She then sounds a whistle signal of five short blasts. You should ____.
A. answer the signal and hold course and speed
B. reduce speed slightly to make sure she will have room to pass
C. make a large course change, and slow down if necessary
D. wait for another whistle signal from the other vessel. |
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Definition
C. make a large course change, and slow down if necessary
Answer: C, Rule 8.b. and e. Any alteration of course or speed to avoid collision shall be large enough to be readily apparent to another vessel observing visually or by radar. If necessary to avoid collision or allow more time to assess the situation, a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion. |
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Term
BOTH INTERNATIONAL & INLAND: If a rowboat underway does not show the lights specified for a sailing vessel underway, it shall show a _______.
A. white light from sunset to sunrise
B. combined lantern showing green to starboard and red to port and shown from sunset to sunrise.
C. combined lantern showing green to starboard and red to port and shown in sufficient time to prevent collision
D. white light shown in sufficient time to prevent collision. |
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Definition
D. white light shown in sufficient time to prevent collision.
Answer: D, Rule 25.d.ii. A vessel under oars may exhibit the lights for sailing vessels, but if she does not, she shall have ready at hand a lantern showing a white light which shall be exhibited in sufficient time to prevent collision. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel at anchor shall display between sunrise and sunset on the forward part of the vessel where it can best be seen _______.
A. one black ball
B. two black balls
C. one red ball
D. two orange and white balls |
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Definition
A. one black ball
Answer: A, Rule 30.a. A vessel at anchor shall exhibit where it can best be seen one all-round white light or one ball in the forepart, and at or near the stern at another light at a lower level than the bow light |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in fog and hear a fog signal of two prolonged blasts on your starboard quarter. You should _________.
A. stop your vessel.
B. change your course to the left
C. change course to the right
D. hold your course and speed |
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Definition
D. hold your course and speed
Answer: D, A vessel u/w but not making way off your starboard qtr does not pose a risk of collision. |
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Term
BOTH INTERNATIONAL & INLAND: You see a vessel displaying a basket in the rigging. It could be a _______.
A. 100-meter vessel engaged in fishing
B. 30-meter vessel trawling
C. 15-meter vessel trolling
D. 15-meter vessel engaged in fishing while at anchor |
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Definition
| Answer: None of the above are true anymore. Edition "D" dated 25 Mar 1999 deleted any reference to the optional basket dayshape for fishing vessels under 20 meters. A basket in the rigging is no longer a dayshape for anyone. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway, in fog, when you hear a whistle signal of one prolonged blast followed by two short blasts. This signal could indicate a vessel _______.
A. Not under command
B. being towed
C. aground
D. all of the above |
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Definition
A. Not under command
Answer: A, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel must exhibit three white masthead lights in a vertical line?
A. any vessel towing astern
B. a vessel whose tow exceeds 200 meters astern
C. A vessel not under command, at anchor
D. A vessel being towed |
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Definition
B. a vessel whose tow exceeds 200 meters astern
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: All of the following are distress signals EXCEPT _____
A. the continuous sounding of any fog signal apparatus
B. giving five or more short and rapid blasts of the whistle
C. firing a gun at intervals of about a minute
D. a barrel with burning oil in it, on deck |
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Definition
B. giving five or more short and rapid blasts of the whistle
Answer: B, Annex iv, 87.1. |
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Term
BOTH INTERNATIONAL & INLAND: If you are approaching a bend, and hear a whistle signal of one prolonged blast from around the bend, you should answer with a signal of ______.
A. a short blast
B. a prolonged blast
C. one short, one prolonged, and one short blast
D. a long blast |
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Definition
B. a prolonged blast
Answer: B, Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel must show an after masthead light, if over 50 meters in length?
A. vessel engaged in fishing
B. a vessel at anchor
C. a vessel not under command
D. a vessel trawling |
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Definition
D. a vessel trawling
Answer: D, Rule 26.b.i. A vessel when engaged in trawling shall exhibit at the mast an all-round green over an all-round white light (or a shape consisting of two cones with their apexes together), a masthead light abaft of and higher than the all-round green light (a vessel of less than 50 meters may not show this light), and when making way through the water, sidelights and a sternlight. Vsls at anchor shows all-round, NUC doesn't show masthead lights (Rule 27.a.) and vsls fishing do not show a masthead light (Rule 26.c.) |
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Term
BOTH INTERNATIONAL & INLAND: A "flashing light" according to the definition given in the rules, is a light that _________.
A. is red in color
B. is visible over an ac of the horizon of 360 degrees
C. flashes at regular intervals at a frequency of 120 flashes or more per minute
D. All of the above |
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Definition
C. flashes at regular intervals at a frequency of 120 flashes or more per minute
Answer: C, Rule 21.f. Flashing light means a light flashing at regular intervals at a frequency of 120 flashes or more per minute. |
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Term
BOTH INTERNATIONAL & INLAND: The tern "restricted visibility" as used in the rules refers ____________.
A. only to fog
B. only to visibility of less than one-half of a mile
C. to visibility where you cannot see shore
D. to any condition where visibility is restricted |
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Definition
D. to any condition where visibility is restricted
Answer: D, Rule 3.l (Int) or Rule 3.k. (Inland). Restricted visibility means any condition in which visibility is restricted by fog, mist, falling snow, heavy rainstorms, sandstorms or any other similar causes. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel engaged in mineclearing shows special identity lights _______.
A. in addition to the lights required for a power-driven vessel
B. which mean that other vessels should not approach within 1000 meters of the mineclearing vessel
C. which are green and show all-round
D. all of the above. |
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Definition
D. all of the above.
Answer: D, Rule 27.f. A vessel engaged in mineclearance operations shall, in addition to the lights prescribed for a power driven vessel or the lights or shape prescribed for a vessel at anchor, exhibit three all-round green lights or three balls, one near the foremast head and one at each end of the fore yard. These lights or shapes indicate that it is dangerous for another vessel to approach within 1000 meters of the mineclearance vessel. |
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Term
BOTH INTERNATIONAL & INLAND: According to the Navigation Rules, you may depart from the Rules when ____.
A. no vessels are in sight visually
B. no vessels are visible on radar
C. you are in immediate danger
D. out of sight of land |
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Definition
C. you are in immediate danger
Answer: C, 17.a.ii. A stand-on vessel may take action to avoid collision by her maneuver alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: An authorized light to assist in the identification of submarines operating on the surface is a(n) ______.
A. blue rotating light
B. intermittent flashing amber/yellow light
C. flashing white light
D. flashing sidelight |
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Definition
B. intermittent flashing amber/yellow light
Answer: B, Rule 1, bottom of page, Submarines may display, as a distinctive means of identification, an intermittent flashing amber (yellow) beacon with a sequence of operation of one flash per second for three (3) seconds followed by a three (3) second off period. |
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Term
BOTH INTERNATIONAL & INLAND: You sight a vessel displaying a basket in the rigging. It could be a _______.
A. 100-meter vessel fishing
B. 30-meter vessel trawling
C. 15-meter vessel trolling
D. 15-meter vessel fishing while at anchor |
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Definition
A. 100-meter vessel fishing
Answer: A, (????) |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning two sailing vessels?
A. a sailing vessel with the wind forward of the beam on her port side shall keep out of the way of a sailing vessel with the wind forward of the beam on the starboard side
B. When both vessels have the wind on the same side, the vessel to leeward shall keep out of the way
C. A sail vessel with the wind aft of the beam must keep out of the way of a vessel sailing into the wind
D. none of the above. |
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Definition
A. a sailing vessel with the wind forward of the beam on her port side shall keep out of the way of a sailing vessel with the wind forward of the beam on the starboard side
Answer: A, Rule 12.a. When two sailing vessels are approaching one another so as to involve risk of collision one shall keep out of the way of the other. If the each has the wind on different sides, the vessel which has the wind on her port shall keep out of the way of the other. If both have the wind on the same side, the one which is to windward shall keep out of the way of the vessel which is to leeward. If a vessel with the wind on the port side sees a vessel to windward and cannot determine what side she has her wind on, she shall keep out of the way of the other. |
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Term
BOTH INTERNATIONAL & INLAND: When underway in a channel, you should keep _____.
A. in the middle of the channel
B. to the starboard side of the channel
C. to the port side of the channel
D. to the side of the channel that has the widest turns |
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Definition
| Answer: B, Rule 9.a. A vessel proceeding along the course of a narrow channel or fairway shall keep as near to the outer limit of the channel or fairway which lies on her starboard side |
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Term
BOTH INTERNATIONAL & INLAND: While underway, in fog, you hear a whistle signal of one prolonged blast followed by two short blats. This signal is sounded by a vessel ______.
A. not under command
B. being towed
C. at anchor
D. aground |
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Definition
A. not under command
Answer: A, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: When navigating in restricted visibility, a power-driven vessel shall ______.
A. stop her engines when hearing a fog signal forward of her beam, een if risk of collision does not exist
B. have her engines ready for immediate maneuver.
C. when making way, sound one prolonged blast at intervals of not more than one minute
D. operate at a speed to be able to stop in the distance of her visability |
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Definition
B. have her engines ready for immediate maneuver.
Answer: B, Rule 19.b. Every vessel shall proceed at a safe speed adapted to the prevailing circumstances and conditions of restricted visibility. A power driven vessel shall have her engines ready for immediate maneuver. |
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Term
BOTH INTERNATIONAL & INLAND: You can indicate that your vessel is in distress by _____.
A. displaying a large red flag
B. displaying three black balls in a vertical line
C. sounding four or more short rapid blasts on the whistle
D. continuously sounding the fog whistle |
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Definition
D. continuously sounding the fog whistle
Answer: D, Annex IV, 87.1.b. A continuous sounding with any fog-signalling apparatus is a signal used to indicate distress or need of assistance. |
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Term
BOTH INTERNATIONAL & INLAND: During the day, a dredge will indicate the side on which it is safe to pass by displaying ______.
A. two balls in a vertical line
B. two diamonds in a vertical line
C. a single back ball
D. no shape is shown during the day |
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Definition
B. two diamonds in a vertical line
Answer: B, Rule 27.d. A vessel engaged in dredging or underwater operations, when restricted in her ability to maneuver, shall exhibit the lights for restricted in her ability of maneuver and, when an obstruction exists, exhibit two all-round red lights (or two balls) in a vertical line to indicate the side on which the obstruction exists, two all-round green lights (or two diamonds) in a vertical line to indicate the side on which another vessel may pass, and when at anchor shall not show the lights prescribed for anchored vessels. |
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Term
BOTH INTERNATIONAL & INLAND: A 45-meter vessel is pulling a 210-meter tow. She may exhibit _______
A. a masthead light forward, and two masthead lights in a vertical line aft
B. three masthead lights forward and one aft
C. two masthead lights forward and no after masthead light
D. None of the above |
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Definition
D. None of the above
Answer: D, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following statements is true concerning the danger signal?
A. vessels must be in sight of each other in order to use the danger signal
B. only the stand-on vessel can sound the danger signal
C. distress signals may be used in place of the danger signal
D. The danger signal consists of 4 or more short blasts of the whistle |
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Definition
A. vessels must be in sight of each other in order to use the danger signal
Answer: A, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: A distress signal _______.
A. consists of 5 or more short blasts of the fog signal apparatus
B. may be used separately or with other distress signals
C. consists of the raising and lowering of a large white flag
D. is used to indicate doubt about another vessel's intentions |
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Definition
B. may be used separately or with other distress signals
Answer: B, Annex IV, 87.1 |
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Term
BOTH INTERNATIONAL & INLAND: What is the danger signal?
A. a continuous sounding of the fog signal
B. firing a gun every2 minutes
C. five or more short rapid blasts on the whistle
D. one long blast on the whistle |
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Definition
C. five or more short rapid blasts on the whistle
Answer: C, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemented by a light signal of at least five short and rapid blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel is "in sight" of another vessel when ____.
A. she can be observed visually or by radar
B. she can be observed visually from the other vessel.
C. She can be seen well enough to determine her heading
D. her fog signal can be heard |
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Definition
B. she can be observed visually from the other vessel.
Answer: B Rule 3.j. Vessels shall be deemed to be in sight of one another only when one can be observed visually from the other. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning two sailing vessels approaching each other?
A. a sailing vessel overtaking another is the give way vessel.
B. When each is on a different tack, the vessel on the starboard tack shall keep out of the way
C. A sailing vessel seeing another to leeward on an undetermined tack shall hold her course
D. all of the above |
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Definition
A. a sailing vessel overtaking another is the give way vessel.
Answer: A, Rule 13.a. Any vessel overtaking any other shall keep out of the way of the vessel being overtaken. Rule 12.a. When two sailing vessels are approaching one another so as to involve risk of collision one shall keep out of the way of the other. If the each has the wind on different sides, the vessel which has the wind on her port shall(port tack) keep out of the way of the other. If both have the wind on the same side, the one which is to windward shall keep out of the way of the vessel which is to leeward. If a vessel with the wind on the port side sees a vessel to windward and cannot determine what side she has her wind on, she shall keep out of the way of the other. Additionally, a vessel overtaking is always the give-way vessel. Answer "B" is incorrect, because the vessel is on a starboard tack (wind coming from starboard side), and answer "C" doesn't say which tack the sailboat is on. |
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Term
BOTH INTERNATIONAL & INLAND: What type of vessel or operation is indicated by a vessel showing two cones with the apexes together?
A. Sailing vessel
B. vessel trawling
C. mineclearing
D. dredge |
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Definition
B. vessel trawling
Answer: B, Rule 26.b.i. A vessel when engaged in trawling shall exhibit at the mast an all-round green over an all-round white light (or a shape consisting of two cones with their apexes together), a masthead light abaft of and higher than the all-round green light (a vessel of less than 50 meters may not show this light), and when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel has on her port side a sailing vessel which is on a collision course. The power-driven vessel is to ____________.
A. maintain course and speed
B. Keep clear
C. Sound one blast and turn to starboard
D. stop her engines |
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Definition
B. Keep clear
Answer: B, Rule 18.a. A power driven vessel shall keep out of the way of a vessel not under command, a vessel restricted in her ability to maneuver, a vessel engaged in fishing, and sailing vessels. |
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Term
BOTH INTERNATIONAL & INLAND: At specified intervals, a vessel towing in fog shall sound?
A. one prolonged blast
B. two prolonged blasts
C. one prolonged and two short blasts in succession
D. One prolonged and three short blasts in succession |
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Definition
C. one prolonged and two short blasts in succession
Answer: C, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel towing in fog shall sound a fog signal of ______.
A. one prolonged blast every two minutes
B. two prolonged blasts every two minutes
C. one prolonged and two short blasts every two minutes
d. one prolonged blast every two minutes |
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Definition
C. one prolonged and two short blasts every two minutes
Answer: C, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: Continuous sounding of a fog whistle by a vessel is a signal of _____.
A. that the vessel is anchored
B. for a request that the draw span of a bridge be opened
C. of distress
D. that the vessel is broken down and drifting |
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Definition
C. of distress
Answer: C, Annex IV, 87.1.b. A continuous sounding with any fog-signalling apparatus is a signal used to indicate distress or need of assistance. |
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Term
BOTH INTERNATIONAL & INLAND: A 50-meter vessel is towing astern and the length of the tow is 100 meters. In addition to sidelights, she may show _______
A. two masthead lights forward, a sternlight, and towing light above the sternlight.
B. a masthead light forward, two masthead lights aft, a sternlight, and a towing light above the sternlight
C. No masthead light forward, two masthead lights aft, a sternlight, and a towing light above the sternlight
D. Three masthead lights forward, one masthead light aft, and two towing lights in a vertical line at the stern |
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Definition
A. two masthead lights forward, a sternlight, and towing light above the sternlight.
Answer: A, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel, which is unable to maneuver due to some exceptional circumstance, shall exhibit ______.
A. during the day, three balls in a vertical line
B. during the day, three shapes, the highest and lowest being balls, and the middle being a diamond
C. when making way at night, two all-round red lights, sidelights, and a sternlight
D. When making way at night, masthead lights, sidelights, and a sternlight. |
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Definition
C. when making way at night, two all-round red lights, sidelights, and a sternlight
Answer: C, Rule 27.a. A vessel not under command shall exhibit two all round red lights in a vertical line where they can best be seen, two balls in a vertical line where they can best be seen, and when making way through the water sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: Which signal, other than a distress signal, can be used by a vessel to attract attention?
A. searchlight
B. continuous sounding of a fog-signal apparatus
C. Burning barrel
D. orange smoke signal |
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Definition
A. searchlight
Answer: A, Rule 36. If necessary to attract the attention of another vessel, any vessel may make light or sound signals that cannot be mistaken for any signal authorized elsewhere in these Rules, or may direct the beam of her searchlight in the direction of the danger, in such a way as not to embarrass any vessel |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning the light used with whistle signals?
A. use of such a light is required
B. the light shall have the same characteristics as a masthead light
C. It is only used to supplement short blasts of the whistle
D. all of the above |
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Definition
C. It is only used to supplement short blasts of the whistle
Answer: C, Rule 34.b.ii. A vessel may supplement the whistle signals . The duration of each flash shall e about one second. |
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Term
BOTH INTERNATIONAL & INLAND: What is the minimum sound signaling equipment required aboard a vessel 14 meters in length?
A. bell only
B. whistle only
C. bell and whistle
D. any means of making an efficient sound signal |
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Definition
C. bell and whistle
Answer: C, Rule 33.a. A vessel of 12 meters or more in length shall be provided with a whistle and a bell. A vessel of 100 meters or more in length shall, in addition, be provided with a gong. The bell and/or gong may be replaced by other equipment having the same respective sound characteristics, but manual sounding of the signals shall always be possible. |
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Term
BOTH INTERNATIONAL & INLAND: The towing light is defined as a(n) ________.
A. flashing amber light
B. yellow light having the same characteristics as the sternlight
C. all-round yellow light
D. yellow light having the same characteristics as the masthead light |
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Definition
B. yellow light having the same characteristics as the sternlight
Answer: B, Rule 21.d. "Towing light" means a yellow light having the same characteristics as the sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: An all-round flashing yellow light may be exhibited by a(n) ___________.
A. vessel not under command
B. air cushion vessel in the nondisplacement mode
C. vessel towing a submerged object
D. vessel engaged in diving operations |
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Definition
B. air cushion vessel in the nondisplacement mode
Answer: B, Rule 23.b. An air cushion vessel when operating in the nondisplacement mode shall, in addition to running lights, exhibit an all-round flashing yellow light where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: When should the fog signal of a manned vessel being towed be sounded?
A. After the towing vessel's fog signal
B. Before the towing vessel's fog signal
C. Approximately one minute after the towing vessel's fog signal
D. If the towing vessel is sounding a fog signal, the manned vessel is being towed is not required to sound any fog signal. |
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Definition
A. After the towing vessel's fog signal
Answer: A, Rule 35.e (Int) or Rule 35.d (Inland). A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A lantern combining the two sidelights of a vessel's running lights may be shown on a _____.
A. 15-meter sailing vessel
B. 20-meter vessel engaged in fishing and making way
C. 25-meter power-driven vessel trolling
D. 25-meter pilot vessel |
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Definition
A. 15-meter sailing vessel
Answer: A, Rule 23 says power driven vessels less than 12 meters may exhibit combination bow lights and all-round stern light. Rule 25.b. A sailing vessel of less than 20 meters in length may combine into one lantern her sidelights and sternlight to be carried near the top of the mast where it can best be seen.. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel engaged in fishing during the day would show _________.
A. one black ball
B. two cones with bases together
C. a cone, apex downward
D. two cones, apexes together |
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Definition
D. two cones, apexes together
Answer: D. Rule 26.b.i. A vessel when engaged in trawling shall exhibit at the mast an all-round green over an all-round white light (or a shape consisting of two cones with their apexes together), a masthead light abaft of and higher than the all-round green light (a vessel of less than 50 meters may not show this light), and when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A sailing vessel is not required to keep out of the way of a ______________.
A. power driven vessel
B. vessel not under command
C. vessel restricted in her ability to maneuver
D. vessel engaged in fishing |
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Definition
| Answer:. A, Rule 18.a. A power driven vessel shall keep out of the way of a vessel not under command, a vessel restricted in her ability to maneuver, a vessel engaged in fishing, and sailing vessels. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel may sound the danger signal?
A. stand-on vessel in a crossing situation
B. the give-way vessel in a crossing situation
C. A vessel at anchor
D. All of the above |
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Definition
D. All of the above
Answer: D, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in the fog, you hear a vessel sound one prolonged blast followed by two short blasts on the whistle. What does this signal indicate?
A. a vessel towing
B. a vessel engaged in pilotage duty
C. a vessel being towed
D. a vessel aground |
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Definition
A. a vessel towing
Answer: A, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: If you saw flames aboard a vessel but could see the vessel was not on fire, you would know that the _____.
A. crew was trying to get warm
B. vessel requiring immediate assistance
C. vessel was attempting to attract the attention of a pilot boat
D. vessel was being illuminated for identification by aircraft |
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Definition
B. vessel requiring immediate assistance
Answer: B, Annex IV, 87.1.h Flames on a vessel, as from a burning tar barrel, oil barrel, etc, is a signal used to indicate distress and need of assistance. |
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Term
BOTH INTERNATIONAL & INLAND: By day, when it is impracticable for a small vessel engaged in diving operations to display the shapes for a vessel engaged in underwater operations, it shall display _________.
A. three black balls in a vertical line
B. two red balls in a vertical line
C. black cylinder
D. rigid replica of the international code flag "A" |
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Definition
D. rigid replica of the international code flag "A"
Answer: D, Rule 27.e.ii. Whenever the size of a vessel engaged in diving operations makes it impracticable to exhibit all lights and shapes required for a vessel restricted in ability to maneuver, the vessel shall exhibit an all-round red over white over red, and a rigid replica of the international code flag "A". |
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Term
BOTH INTERNATIONAL & INLAND: A vessel will NOT show sidelights when ________.
A. underway, but not making way
B. making way, not under command
C. not under command, not making way
D. trolling underway |
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Definition
C. not under command, not making way
Answer: C, Rule 27.a. A vessel not under command shall exhibit two all round red lights in a vertical line where they can best be seen, two balls in a vertical line where they can best be seen, and when making way through the water sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: Which display indicates a vessel conducting mineclearance operations
A. three balls in a vertical line
B. Two balls in a vertical line
C. One ball near the foremast and one ball at each yardarm.
D. One diamond near the foremast and one diamond at each yardarm |
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Definition
C. One ball near the foremast and one ball at each yardarm.
Answer: C, Rule 27.f. A vessel engaged in mineclearance operations shall, in addition to the lights prescribed for a power driven vessel or the lights or shape prescribed for a vessel at anchor, exhibit three all-round green lights or three balls, one near the foremast head and one at each end of the fore yard. These lights or shapes indicate that it is dangerous for another vessel to approach within 1000 meters of the mineclearance vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel may show two masthead lights in a vertical line?
A. vessel less than 50 meters in length with a 20-meter tow
B. A sailing vessel towing a small vessel astern
C. A vessel restricted in her ability to maneuver
D. A vessel engaged in dredging. |
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Definition
A. vessel less than 50 meters in length with a 20-meter tow
Answer: A, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: The duration of each blast of whistle signals used in meeting and crossing situations is _____.
A. about 1 second
B. 2 to 4 seconds
C. 4 to 6 seconds
D. 8 to 10 seconds |
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Definition
A. about 1 second
Answer: A, Rule 34.a.i Short blasts are used for maneuvering signals Rule 32.b. The term "short blast" means a blast of about 1 second's duration. |
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Term
BOTH INTERNATIONAL & INLAND: What dayshape should a vessel being towed exhibit if the tow EXCEEDS 200 meters?
A. Two balls
B. Two diamonds
C. One ball
D. one diamond |
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Definition
D. one diamond
Answer: D, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A sailing vessel is meeting a vessel engaged in fishing in a narrow channel. Which statement is true?
A. The fishing vessel shall not hinder the passage of the sailing vessel
B. The fishing vessel has the right of way
C. Each vessel should move to the edge of the channel on her port side
D. Each vessel should be displaying signals for a vessel constrained by her draft |
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Definition
A. The fishing vessel shall not hinder the passage of the sailing vessel
Answer: A, Rule 9.c. A vessel engaged in fishing shall not impede the passage of any other vessel navigating within a narrow channel or fairway. Rule 18.b, which says "A sailing vessel shall keep out of the way of a vessel not under command, restricted in her ability to maneuver, and a vessel engaged in fishing" could easily confuse the issue, but rule 18 says "notwithstanding rules 9, 10, and 13. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true when you are towing more than one barge astern at night?
A. Only the last barge in the tow must be lighted.
B. Only the first and last barges in the tow must be lighted
C. Each barge in the tow must be lighted
D. Only manned barges must be lighted |
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Definition
C. Each barge in the tow must be lighted
Answer: C, Rule 24.e. A vessel or object being towed, other than those mentioned in paragraph (g) of this Rule (pertaining to inconspicuous or partly submerged objects being towed), shall exhibit: (i) sidelights; (ii) a sternlight; (iii) when the length of the tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel is being propelled both by sail and by engines. Under the rules, the vessel is ______.
A. Considered a "special circumstance" vessel
B. Not covered under any category
C. considered a sail vessel
D. considered a power-driven vessel |
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Definition
D. considered a power-driven vessel
Answer: D, Rule 3.c. The term "sailing vessel" means any vessel under sail provided that propelling machinery, if fitted, is not being used. |
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Term
BOTH INTERNATIONAL & INLAND: The white masthead light required for a power-driven vessel under the rules is visible over how many degrees of the horizon?
A. 22.5
B. 112.5
C. 225
D. 360 |
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Definition
C. 225
Answer: C, Rule 21.a "Masthead light" means a white light placed over the fore and aft centerline of the vessel showing an unbroken light over an arc of the horizon of 225 degrees, from 22.5 degrees abaft the beam on one side to 22.5 degrees abaft the beam on the other. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning lights and shapes for towing vessels?
A. if a tow exceeds 200 meters in length, the towing vessel will display a black ball during daylight
B. When towing astern, a vessel will carry her identification lights at the masthead in addition to her regular masthead light
C. when towing astern, the towing vessel may show either a sternlight or towing light, but not both
D. If the towing vessel is over 50 meters in length, she must carry forward and after masthead lights |
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Definition
D. If the towing vessel is over 50 meters in length, she must carry forward and after masthead lights
Answer: D, Rule 24.d. A power driven vessel which is towing astern, pushing ahead, or towing alongside, shall also comply with the requirements for a masthead light forward, and second masthead light aft if the vessel 50 meters or longer. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel may use any sound or light signals to attract the attention of another vessel as long as _____.
A. white lights are not used
B. red and green lights are not used
C. the vessels signals such intentions over the radiotelephone
D. the signal cannot be mistaken for a signal authorized by the rules |
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Definition
D. the signal cannot be mistaken for a signal authorized by the rules
Answer: D, Rule 36 If necessary to attract the attention of another vessel, any vessel may make light or sound signals that cannot be mistaken for any signal authorized elsewhere in these rules, or may direct the beam of her searchlight in the direction of the danger, in such a way as not to embarrass any vessel. |
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Term
BOTH INTERNATIONAL & INLAND: What type of vessel operation is indicated by a vessel displaying two cones with the apexes together?
A. Sailing
B. Trawling
C. Minesweeping
D. Dredging |
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Definition
B. Trawling
Answer: B, Rule 26.b. A vessel engaged in trawling shall exhibit an all-round green over white, or a shape consisting of two cones with their apexes together in a vertical line one over the other, and if the vessel is 50 meters or more shall exhibit a masthead light abaft of and higher than the all-round green. When making way through the water, shall also exhibit sidelights and a sternlight in addition to the above lights. |
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Term
BOTH INTERNATIONAL & INLAND: The rule regarding lookouts applies ______.
A. in restricted visibility
B. between dusk and dawn
C. in heavy traffic
D. All of the above |
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Definition
D. All of the above
Answer: D, Rule 5 Every vessel shall at all times maintain a proper look-out by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and the risk of collision. |
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Term
BOTH INTERNATIONAL & INLAND: While underway and towing, your vessel enters fog. What fog signal should you sound?
A. one prolonged blast
B. Two prolonged blasts
C. One prolonged blast and two short blasts
D. Three distinct blasts |
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Definition
C. One prolonged blast and two short blasts
Answer: C, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel engaged in fishing must display a light in the direction of any gear that extends outward more than 150 meters. The color of this light is _______________.
A. white
B. Green
C. Red
D. Yellow |
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Definition
A. white
Answer: A, Rule 26.c. A vessel engaged in fishing, other than trawling, shall exhibit an all-round red over white in a vertical line, or a shape consisting of two cones with apexes together in a vertical line. When there is outlying gear extending more than 15 meters from the vessel, an all-round white light, or a cone apex upwards, in the direction of the gear. Additionally, when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning a towing light when a towing vessel is towing astern?
A. When a towing light is shown, no sternlight is necessary.
B. When a sternlight is shown, no towing light is necessary.
C. The towing light is shown below the sternlight
D. The towing light is shown above the sternlight |
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Definition
D. The towing light is shown above the sternlight
Answer: D, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: At night, a vessel which is less than 7 meters in length and anchored in an area where other vessels do not normally navigate is _______.
A. not required to show any anchor lights
B. required to show a flare-up light
C. required to show one white light
D. required to show sidelights and a sternlight |
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Definition
A. not required to show any anchor lights
Answer: A, Rule 30.e. A vessel of less than 7 meters in length, when at anchor, not in or near a narrow channel fairway anchorage, or where other vessels normally navigate, shall not be required to exhibit anchor lights or shapes. |
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Term
BOTH INTERNATIONAL & INLAND: You are in charge of a 120-meter power-driven vessel at anchor in fog, sounding the required anchor signals. You hear the fog signal of a vessel underway off your port bow. You may sound ______.
A. at least five short and rapid blasts
B. two short blasts
C. one short, one prolonged, and one short blast
D. three short blasts |
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Definition
C. one short, one prolonged, and one short blast
Answer: C, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: When taking action to avoid collision, you should _______.
A. make sure the action is taken in enough time
B. not make any large course changes
C. not make any large speed changes
D. All of the above |
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Definition
A. make sure the action is taken in enough time
Answer: A, Rule 8.a. Any action taken to avoid collision shall, if the circumstances of the case admit, be positive, made in ample time, and with due regard to the observance of good seamanship. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel would have no white lights visible when meeting her head-on?
A. A vessel trawling
B. A vessel restricted in her ability to maneuver
C. A vessel mineclearing
D. A vessel not under command |
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Definition
D. A vessel not under command
Answer: D, Rule 27.a. A vessel not under command shall exhibit two all round red lights in a vertical line where they can best be seen, two balls in a vertical line where they can best be seen, and when making way through the water sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: You are in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. The rules require you to _________.
A. stop your engines
B. sound two prolonged blasts of the whistle
C. sound the danger signal
D. slow to bare steerageway |
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Definition
D. slow to bare steerageway
Answer: D, Rule 19.e. Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close quarters situation with another vessel forward of her beam, shall reduce her speed to the minimum which she can be kept on course. She shall, if necessary, take all her way off and, in any event, navigate with extreme caution until the danger of collision is over. |
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Term
BOTH INTERNATIONAL & INLAND: A towing vessel 30 meters in length is pushing barges ahead. How many white masthead lights is the vessel required to show at night?
A. One
B. Two
C. Three
D. Four |
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Definition
B. Two
Answer: B, Rule 24.c. A power-driven vessel, when pushing ahead or towing alongside, shall exhibit two masthead lights in a vertical line and sidelights. Inland rules require two towing lights in a vertical line, while international rules requires a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog you hear a vessel sound one prolonged blast followed by two short blasts. What does this signal indicate?
A. A vessel towing
B. A vessel being towed
C. A pilot vessel engaged on pilotage duty
D. A vessel aground |
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Definition
A. A vessel towing
Answer: A, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel with a 150-meter stern tow shall display
A. Three masthead lights in a vertical line
B. A towing light above the sternlight
C. two towing lights in a vertical line
D. a red light over a white light at the masthead |
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Definition
B. A towing light above the sternlight
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel transferring cargo while underway is classified by the Rules as a vessel ________.
A. not under command
B. in special circumstances
C. restricted in her ability to maneuver
D. constrained by her draft |
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Definition
C. restricted in her ability to maneuver
Answer: C, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following vessels, when anchored at night, would not be required to show anchor lights?
A. A power driven vessel
B. A vessel engaged on pilotage duty
C. A vessel dredging
D. A vessel restricted in her ability to maneuver |
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Definition
C. A vessel dredging
Answer: C, Rule 27.d. A vessel engaged in dredging or underwater operations, when restricted in her ability to maneuver, shall exhibit the lights for restricted in her ability of maneuver and, when an obstruction exists, exhibit two all-round red lights (or two balls) in a vertical line to indicate the side on which the obstruction exists, two all-round green lights (or two diamonds) in a vertical line to indicate the side on which another vessel may pass, and when at anchor shall not show the lights prescribed for anchored vessels. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel which is towing and showing three forward white masthead lights in a vertical line is indicating that the length of the _____________.
A. towing vessel is less than 50 meters
B. towing vessel is greater than 20 meters
C. tow is less than 200 meters
D. tow is greater than 200 meters |
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Definition
D. tow is greater than 200 meters
Answer: D, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is underway under the rules of the road?
A. vessel at anchor with engine running
B. vessel with line led to a tree onshore
C. vessel drifting with the engine off
D. vessel aground |
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Definition
C. vessel drifting with the engine off
Answer: C, Rule 3.i (Int) or Rule 3.h (Inland). The word "underway" means that a vessel is not at anchor, or made fast to the shore, or aground. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel may exhibit identifying lights when not actually engaged in her occupation?
A. a trawler
B. a fishing vessel
C. A tug
D. none of the above |
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Definition
D. none of the above
Answer: D. |
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Term
BOTH INTERNATIONAL & INLAND: A 25-meter vessel trawling will show the dayshape of ____.
A. a basket
B. two balls
C. two cones, apexes together
D. cone, apex downward |
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Definition
C. two cones, apexes together
Answer: C, Rule 26.b.i. A vessel when engaged in trawling shall exhibit at the mast an all-round green over an all-round white light (or a shape consisting of two cones with their apexes together), a masthead light abaft of and higher than the all-round green light (a vessel of less than 50 meters may not show this light), and when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel underway shall keep out of the way of a _____.
A. vessel not under command
B. vessel engaged in fishing
C. sailing vessel
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 18.a. A power driven vessel shall keep out of the way of a vessel not under command, a vessel restricted in her ability to maneuver, a vessel engaged in fishing, and sailing vessels. |
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Term
BOTH INTERNATIONAL & INLAND: A fog signal of one short, one prolonged, and one short blast can be sounded by a ______.
A. vessel at anchor
B. vessel aground
C. sailing vessel
D. all of the above |
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Definition
A. vessel at anchor
Answer: A, Rule 35.g (international) and Rule 35.f (Inland). A vessel at anchor shall at intervals of not more than 1 minute ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the forepart of the vessel and immediately after the ringing of the bell the gong shall be sounded rapidly for about 5 seconds in the after part of the vessel. A vessel at anchor may in addition sound three blasts in succession; namely, one short, one prolonged and one short blast, to give warning of her position and the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A continuous sounding of a fog-signal apparatus indicates ______.
A. The vessel is in distress
B. the vessel has completed loading dangerous cargo
C. it is safe to pass
D. vessel is anchored |
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Definition
A. The vessel is in distress
Answer: A, Annex IV, 87.1.b. A continuous sounding with any fog-signaling apparatus is a signal used to indicate distress or need of assistance. |
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Term
BOTH INTERNATIONAL & INLAND: Your vessel is underway in reduced visibility, you hear, about 22 degrees on the starboard bow, a fog signal of another vessel. Which of the following actions should you take?
A. alter the course to starboard to pass around the other vessel's stern.
B. slow your engines and let him pass ahead of you.
C. Reduce your speed to bare steerageway.
D. alter course to port to pass him on his port side |
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Definition
C. Reduce your speed to bare steerageway.
Answer: C, Rule 19.e. Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close quarters situation with another vessel forward of her beam, shall reduce her speed to the minimum which she can be kept on course. She shall, if necessary, take all her way off and, in any event, navigate with extreme caution until the danger of collision is over. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true of a 30 meter sailing vessel underway?
A. She must show sidelights and a sternlight in restricted visibility
B. she may show an all-round white light at the top of the mast.
C. She need not show a sternlight if she is showing all-round lights on the mast
D. If she is using propelling machinery, she shall show forward a shape consisting of two cones, apexes together |
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Definition
A. She must show sidelights and a sternlight in restricted visibility
Answer: A, Rule 25.a. A sailing vessel underway shall exhibit sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel when towing another vessel astern (tow less than 200 meters) shall show ____.
A. two masthead lights in a vertical line instead of the forward masthead light
B. two masthead lights in a vertical line instead of either the forward or after masthead light
C. two towing lights in a vertical line at the stern
D. a small white light aft of the funnel |
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Definition
A. two masthead lights in a vertical line instead of the forward masthead light
Answer: A, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel which is "restricted in her ability to maneuver" under the rules, is a vessel which is ____.
A. mineclearing
B. engaged in fishing
C. at anchor
D. not under command |
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Definition
A. mineclearing
Answer: A, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: When a vessel signals distress by means of a gun or other explosive signal, the firing should be at intervals of ______
A. 10 minutes
B. 1 minute
C. 1 hour
D. 3 minutes |
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Definition
B. 1 minute
Answer: B, Annex iv, 87.1.a. A gun or other explosive signal fired at intervals of about a minute is a signal used to indicate distress and need of assistance. |
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Term
BOTH INTERNATIONAL & INLAND: A "head on" or "end on" situation shall be deemed to exist at night when a vessel sees the other vessel ahead and ___________.
A. one sidelight and the masthead light are visible
B. the vessels will pass closer than half a mile
C. Both vessels sound one prolonged blast
D. both sidelights are visible |
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Definition
D. both sidelights are visible
Answer: D, Rule 14.b. A head on situation shall be deemed to exist when a vessel sees the other ahead or nearly ahead and by night she could see the masthead lights of the other in a line or nearly in a line or both sidelights and by day she observes the corresponding aspect of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A 20 meter vessel is towing another vessel astern. The length of the tow from the stern of the towing vessel to the stern of the tow is 75 meters. How many white towing identification lights shall the tow vessel show at night?
A. 1
B. 2
C. 3
D. 4 |
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Definition
B. 2
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel fishing, and at anchor, should show _________.
A. an anchor light
B. sidelights and a sternlight
C. three lights in a vertical line, the highest and lowest being red, and the middle being white
D. none of the above |
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Definition
D. none of the above
Answer: D, Rule 26.c. A vessel engaged in fishing, other than trawling, shall exhibit an all-round red over white in a vertical line, or a shape consisting of two cones with apexes together in a vertical line. When there is outlying gear extending more than 15 meters from the vessel, an all-round white light, or a cone apex upwards, in the direction of the gear. Additionally, when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel underway shall keep out of the way of a vessel _______.
A. not under command
B. restricted in her ability to maneuver
C. engaged in fishing
D. All of the above |
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Definition
D. All of the above
Answer: D, Rule 18.a. A power driven vessel shall keep out of the way of a vessel not under command, a vessel restricted in her ability to maneuver, a vessel engaged in fishing, and sailing vessels. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel sounding a fog signal of one short, one prolonged and one short blast is indicating that the vessel is __________.
A. Not under command
B. restricted in her ability to maneuver
C. engaged in fishing
D. Vessel at anchor |
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Definition
D. Vessel at anchor
Answer: D, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel sounding a fog signal of one short, one prolonged, and one short blast is indicating that the vessel is ___________.
A. fishing
B. in distress
C. at anchor
D. not under command |
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Definition
C. at anchor
Answer: C, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Two all-round red lights displayed in a vertical line are shown by a ______.
A. vessel being towed
B. tug or towboat pushing a barge ahead
C. Vessel at anchor
D. vessel not under command |
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Definition
D. vessel not under command
Answer: D, Rule 30.d. A vessel aground shall exhibit, along with the appropriate anchor lights, two all-round red lights in a vertical line, and three balls in a vertical line. |
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Term
BOTH INTERNATIONAL & INLAND: Your vessel is underway in reduced visibility. You hear, about 30 degrees on the starboard bow, a fog signal of another vessel. Which of the following actions should you take?
A. alter course to starboard and pass around the other vessel's stern.
B. slow your engines and let him pass ahead of you.
C. reduce your speed to bare steerageway
D. alter course to port and pass him on his port side |
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Definition
C. reduce your speed to bare steerageway
Answer: C, Rule 19.e. Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close quarters situation with another vessel forward of her beam, shall reduce her speed to the minimum which she can be kept on course. She shall, if necessary, take all her way off and, in any event, navigate with extreme caution until the danger of collision is over. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in fog and you hear one prolonged blast followed by two short blasts. This is a vessel ___________.
A. towing
B. engaged on pilotage duty
C. aground in a fairway
D. stopped and making no way through the water |
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Definition
A. towing
Answer: A, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A sailing vessel is NOT allowed to show the all-round red over green lights on the mast if ______.
A. she is showing sidelights
B. her sidelights are combined and shown on the fore and aft centerline of the vessel
C. She is showing a sternlight
D. her sidelights and sternlight are combined in one lantern and shown on the mast. |
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Definition
D. her sidelights and sternlight are combined in one lantern and shown on the mast.
Answer: D, Rule 25.c. A sailing vessel underway may, in addition to sidelights and sternlight, exhibit on her mast an all-round red over an all-round green light. But these lights shall not be shown if using a single lantern combining the sidelights and sternlight) |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel, when towing astern, shall show:
A. two towing lights in a vertical line
B. a towing light in a vertical line above the sternlight
C. Two towing lights, in addition to the sternlight
D. a small white light in lieu of the sternlight |
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Definition
B. a towing light in a vertical line above the sternlight
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: According to the rules, which vessel is NOT restricted in her ability to maneuver?
A a vessel servicing a navigation marker
B. a sailing vessel
C. a vessel mineclearing
D. a vessel dredging |
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Definition
B. a sailing vessel
Answer: B, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Distress signals may be _____.
A. red flares
B. smoke signals
C. sound signals
D. all of the above |
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Definition
D. all of the above
Answer: D, Annex IV, 87.1 |
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Term
BOTH INTERNATIONAL & INLAND: When anchoring a 25-meter vessel at night, you must show ______.
A. one all-round white light
B. two all-round white lights
C. One all-round white light and the sidelights
D. the sidelights and a sternlight |
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Definition
A. one all-round white light
Answer: A, Rule 30.b. A vessel at anchor, of less than 50 meters, may exhibit an all-round white light where it can best be seen instead of the forward and aft anchor lights required for vessels 50 meters and over. |
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Term
BOTH INTERNATIONAL & INLAND: You are approaching another vessel at night. You can see both red and green sidelights and, above the level of the sidelights, three white lights in a vertical line. The vessel may be ______________.
A. not under command
B. towing a tow more than 200 meters astern
C. trawling
D. underway and dredging |
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Definition
B. towing a tow more than 200 meters astern
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel engaged in fishing, and at anchor, should exhibit ____________.
A. an anchor light
B. sidelights and sternlight
C. three lights in a vertical line, the highest and lowest being red, and the middle being white
D. none of the above |
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Definition
D. none of the above
Answer: D, Rule 26.c. A vessel engaged in fishing, other than trawling, shall exhibit an all-round red over white in a vertical line, or a shape consisting of two cones with apexes together in a vertical line. When there is outlying gear extending more than 15 meters from the vessel, an all-round white light, or a cone apex upwards, in the direction of the gear. Additionally, when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: In a crossing situation on open waters, a sailing vessel shall keep out of the way of all the following vessels EXCEPT _________.
A. vessel not under command
B. vessel restricted in her ability to maneuver
C. power driven vessel approaching on her starboard side
D. vessel fishing |
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Definition
C. power driven vessel approaching on her starboard side
Answer: C, Rule 18.a. A power driven vessel shall keep out of the way of a vessel not under command, a vessel restricted in her ability to maneuver, a vessel engaged in fishing, and sailing vessels. |
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Term
BOTH INTERNATIONAL & INLAND: You are on a 120-meter power-driven vessel at anchor in fog. You hear the fog signal of a vessel underway off your port bow. You may sound ______________.
A. at least five short and rapid blasts
B. two short blasts
C. one short, one prolonged, and one short blast
D. no whistle signal |
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Definition
C. one short, one prolonged, and one short blast
Answer: C, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A power driven vessel making way through the water sounds a fog signal of ________.
A. One prolonged blast at intervals of not more than 2 minutes
B. Two prolonged blast at intervals of not more than 2 minutes
C. One prolonged blast at intervals of not more than 1 minutes
D. Two prolonged blast at intervals of not more than 1 minutes |
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Definition
A. One prolonged blast at intervals of not more than 2 minutes
Answer: A, Rule 35.a In or near an area of restricted visibility, whether by day or night, a power driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast. |
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Term
BOTH INTERNATIONAL & INLAND: You are on watch in the fog. Your vessel is proceeding at a safe speed when you hear a fog signal ahead of you. The rules require you to navigate with caution until the danger of collision is over and to _________.
A. slow to less than 2 knots
B. reduce to bare steerageway
C. stop your engines
D. begin a radar plot |
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Definition
B. reduce to bare steerageway
Answer: B, Rule 19.e. Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close quarters situation with another vessel forward of her beam, shall reduce her speed to the minimum which she can be kept on course. She shall, if necessary, take all her way off and, in any event, navigate with extreme caution until the danger of collision is over. |
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Term
BOTH INTERNATIONAL & INLAND: In restricted visibility, a vessel fishing with nets shall sound at intervals of two minutes _______.
A. one prolonged blast
B. one prolonged followed by two short blasts
C. one prolonged followed by three short blasts
d. Two prolonged blasts in succession |
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Definition
B. one prolonged followed by two short blasts
Answer: B, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A 20-meter sailing vessel underway must exhibit a ____.
A. sternlight
B. combined lantern
C. red light over a green light at the masthead
D. all of the above |
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Definition
A. sternlight
Answer: A Rule 25.a. A sailing vessel underway shall exhibit sidelights and a sternlight. A s/v less than 20 meters may combine these lights into one lantern carried at or near the top of the mast where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: At night, you are towing a partly submerged vessel, 20 meters in length and 4 meters in breadth. What lights must you display on the towed vessel?
A. A white light at the stern
B. Two white lights side by side at the stern
C. A white light at the forward end and a white light at the after end
D. Two red lights in a vertical line at the after end |
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Definition
C. A white light at the forward end and a white light at the after end
Answer: C, Rule 24.g. An inconspicuous, partly submerged vessel or object being towed shall exhibit one all-round white light at or near each end if it is less than 25 meters in breadth, four all-round white lights to mark its length and breadth if it is 25 meters or more in breadth, and if it exceeds 100 meters in length, additional all-round white lights between these lights so that the distance between the lights shall not exceed 100 meters. Additionally, a diamond shape at or near the aftermost extremity of the last vessel or object being towed. The towing vessel may also direct a searchlight in the direction of the tow to indicate its presence to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: All of the following vessels shall be regarded as "restricted in their ability to maneuver" EXCEPT a vessel __________.
A. laying a pipeline
B. dredging
C. mineclearing
D. not under command |
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Definition
D. not under command
Answer: D, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: What lights must be shown on a barge being towed astern at night?
A. a white light at each corner
B. a white light fore and aft
C. sidelights and a sternlight
D. a sternlight only |
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Definition
C. sidelights and a sternlight
Answer: C, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel which is unable to maneuver due to some exceptional circumstance, shall show two red lights in a vertical line and ________.
A. During the day, three balls in a vertical line
B. during the day, three shapes, the highest and lowest being balls and the middle being a diamond
C. When making way at night, sidelights and a sternlight
D. When making way at night, masthead lights, sidelights, and a sternlight |
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Definition
C. When making way at night, sidelights and a sternlight
Answer: C, Rule 27.a. A vessel not under command shall exhibit two all round red lights in a vertical line where they can best be seen, two balls in a vertical line where they can best be seen, and when making way through the water sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway and approaching a bend in the channel where vessels approaching from the opposite direction cannot be seen. You should sound ________.
A. One prolonged blast
B. Three prolonged blasts
C. One continuous blast until you are able to see around the bend
D. One blast, 8 to 10 seconds in duration |
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Definition
A. One prolonged blast
Answer: A, Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel which is fishing must show sidelights and a sternlight only when ______.
A. anchored
B. underway
C. dead in the water
D. underway and making way |
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Definition
D. underway and making way
Answer: D, Rule 26.c. A vessel engaged in fishing, other than trawling, shall exhibit an all-round red over white in a vertical line, or a shape consisting of two cones with apexes together in a vertical line. When there is outlying gear extending more than 15 meters from the vessel, an all-round white light, or a cone apex upwards, in the direction of the gear. Additionally, when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel towing astern shall show ______.
A. two towing lights in a vertical line
B. a towing light in a vertical line above the sternlight
C. two towing lights in addition to the sternlight
D. a small white light in lieu of the sternlight |
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Definition
B. a towing light in a vertical line above the sternlight
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in fog when you hear the following signal: One short blast, one prolonged blast, and one short blast. Which of the following would it be?
A. A sailing vessel underway with the wind abaft the beam
B. A power-driven vessel underway and making way through the water
C. vessel at anchor
D. vessel towing |
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Definition
C. vessel at anchor
Answer: C, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: If you hear the firing of a gun at one minute intervals from another vessel, this indicates that _____.
A. the gun is being used to sound passing signals
B. the vessel is in distress
C. all vessels are to clear the area
D. all is clear and it is safe to pass |
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Definition
B. the vessel is in distress
Answer: B, Annex iv, 87.1.a. |
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Term
BOTH INTERNATIONAL & INLAND: Fog signals, required under the rules for vessels underway, shall be sounded _____________.
A. only on the approach of another vessel.
B. only when vessels are in sight of each other
C. at intervals of not more than one minute
D. at intervals of not more than 2 minutes |
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Definition
D. at intervals of not more than 2 minutes
Answer: D, Rule 35 In or near an area of restricted visibility, whether by day or night, the signals prescribed in these rules shall be used. |
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Term
BOTH INTERNATIONAL & INLAND: A towing vessel is towing two barges astern. The length of the tow from the stern of the tug to the stern of the last barge is 250 meters. How many forward white masthead lights should be displayed on the towboat at night?
A. 1
B. 2
C. 3
D. 4 |
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Definition
C. 3
Answer: C, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: At night, a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two ________.
A. red lights
B. red lights and two red lights
C. red lights with a white light in between
D. white lights with a red light in between |
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Definition
C. red lights with a white light in between
Answer: C, , Rule 27.b. A vessel restricted in her ability to maneuver (except a vessel engaged in mineclearance ops) shall exhibit where they can best be seen an all-round red over white over red light, or shapes of ball over diamond over ball. When making way through the water she shall show masthead lights, sidelights and a sternlight. When at anchor, in addition to the red over white over red, appropriate anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: Your power-driven vessel is underway when you sight a sailing vessel on your port bow. Which vessel is the "stand-on" vessel?
A. The sailboat, because it is to port of your vessel
B. The sailboat, because it is under sail
C. Your vessel, because it is a power driven vessel
D. Your vessel, because it is to starboard of the sailboat |
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Definition
B. The sailboat, because it is under sail
Answer: B, Rule 18.a. A power driven vessel shall keep out of the way of a vessel not under command, a vessel restricted in her ability to maneuver, a vessel engaged in fishing, and sailing vessels. |
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Term
BOTH INTERNATIONAL & INLAND: Five or more short blasts on a vessel's whistle indicates that she is ____________.
A. in doubt that another vessel is taking sufficient action to avoid a collision.
B. altering course to starboard
C. altering course to port
D. the stand-on vessel and will maintain course and speed |
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Definition
A. in doubt that another vessel is taking sufficient action to avoid a collision.
Answer: A, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement concerning maneuvering in restricted visibility is FALSE?
A vessel which cannot avoid a close-quarters situation with a vessel forward of her beam shall reduce her speed to bare steerageway
B. a vessel which hears a fog signal forward of her beam shall stop her engines
C. A vessel which hears a fog signal forward of the beam shall navigate with caution.
D. If a vessel determines by radar that a close-quarters situation is developing, she shall take avoiding action in ample time |
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Definition
B. a vessel which hears a fog signal forward of her beam shall stop her engines
Answer: B, Rule 19.e. Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close quarters situation with another vessel forward of her beam, shall reduce her speed to the minimum which she can be kept on course. She shall, if necessary, take all her way off and, in any event, navigate with extreme caution until the danger of collision is over. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel being towed astern shall show at night ____.
A. the lights required for a power-driven vessel underway
B. only the required masthead lights
C. a sternlight only
D. sidelights and a sternlight |
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Definition
D. sidelights and a sternlight
Answer: D, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: In order for a stand-on vessel to take action in a situation, she must determine that the other vessel _____.
A. is restricted in her ability to maneuver
B. has sounded the danger signal
C. is not taking appropriate action
D. has not changed course since risk of collision was determined |
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Definition
C. is not taking appropriate action
Answer: C, Rule 17.a. where one of two vessels is to keep out of the way, the other shall keep her course and speed However, the latter vessel may take action to avoid collision by her maneuver alone as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: While underway your vessel approaches a bend in a river where, due to the bank, you cannot see around the bend. You should ___________.
A. keep to the starboard side of the channel and sound one short blast
B. sound the danger signal
C. sound one prolonged blast
D. slow your vessel to bare steerageway. |
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Definition
C. sound one prolonged blast
Answer: C, Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement concerning whistle signals is FALSE?
A. When a pushing vessel and a vessel pushed are connected in a composite unit, the unit sounds the fog signal of a power-driven vessel
B. A vessel at anchor may sound one short, one prolonged, and one short blast.
C. A pilot vessel may sound an identity signal on the whistle.
D. A vessel engaged in towing in fog shall sound a fog signal at intervals of one minute. |
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Definition
D. A vessel engaged in towing in fog shall sound a fog signal at intervals of one minute.
Answer: D, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A sailing vessel of over 20 meters in length underway must show a ____________.
A. red light over a green light at the masthead
B. white masthead light
C. combined lantern
D. sternlight |
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Definition
D. sternlight
Answer: D, Rule 25.a. A sailing vessel underway shall exhibit sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: An inconspicuous, partly submerged vessel or object being towed, where the length of tow is 100 meters, shall show ______________.
A. yellow lights at each end
B. two red lights in a vertical line
C. a black ball
D. a diamond shape |
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Definition
D. a diamond shape
Answer: D, Rule 24.g. An inconspicuous, partly submerged vessel or object being towed shall exhibit one all-round white light at or near each end if it is less than 25 meters in breadth, four all-round white lights to mark its length and breadth if it is 25 meters or more in breadth, and if it exceeds 100 meters in length, additional all-round white lights between these lights so that the distance between the lights shall not exceed 100 meters. Additionally, a diamond shape at or near the aftermost extremity of the last vessel or object being towed. The towing vessel may also direct a searchlight in the direction of the tow to indicate its presence to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A man aboard a vessel, signaling by raising and lowering his outstretched arms to each side, is indicating _________.
A. danger, stay away
B. all is clear, it is safe to pass
C. the vessel is anchored
D. a distress signal |
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Definition
| Answer: D, Annex IV, 87.1.k. |
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Term
BOTH INTERNATIONAL & INLAND: Your 15 meter vessel is crossing a narrow channel and a large cargo vessel to port is within the channel and crossing your course. What is your responsibility?
A. Hold course and speed
B. Sound the danger signal
C. Initiate an exchange of passing signals
D. Do not cross the channel if you might impede the other vessel |
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Definition
D. Do not cross the channel if you might impede the other vessel
Answer: D, , Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel being towed shall show ________.
A. masthead lights
B. sidelights
C. a special flashing light
D. All of the above |
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Definition
B. sidelights
Answer: B, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel making way through the water would sound which of the following fog signals?
A. Two short blasts every one minute
B. One short blast every one minute
C. Two prolonged blasts every two minutes
D. One prolonged blast every two minutes |
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Definition
D. One prolonged blast every two minutes
Answer: D, Rule 35.a In or near an area of restricted visibility, whether by day or night, a power driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast. |
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Term
BOTH INTERNATIONAL & INLAND: You are towing two barges astern. The length of the tow from the stern of the tug to the stern of the last barge is 150 meters. How many forward white towing identification lights should be displayed on the towboat at night?
A. 1
B. 2
C. 3
D. 4 |
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Definition
B. 2
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel may show three lights in a vertical line, the top and bottom being red and middle being white?
A. A vessel engaged in diving operations
B. A pilot vessel
C. A vessel trawling
D. All of the above |
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Definition
A. A vessel engaged in diving operations
Answer: A, , Rule 27.b. A vessel restricted in her ability to maneuver (except a vessel engaged in mineclearance ops) shall exhibit where they can best be seen an all-round red over white over red light, or shapes of ball over diamond over ball. When making way through the water she shall show masthead lights, sidelights and a sternlight. When at anchor, in addition to the red over white over red, appropriate anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel has on her port side a sailing vessel which is on a collision course. The power-driven vessel is required to _____.
A. maintain course and speed
B. keep clear
C. sound one blast and turn to starboard
D. stop her engines |
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Definition
B. keep clear
Answer: B, Rule 18.a. A power driven vessel shall keep out of the way of a vessel not under command, a vessel restricted in her ability to maneuver, a vessel engaged in fishing, and sailing vessels. |
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Term
BOTH INTERNATIONAL & INLAND: A towing light will be carried above a vessel's sternlight ______________________________..
A. only if she is towing astern
B. only if the tow exceeds 200 meters
C. at any time when towing
D. If the towing vessel is restricted in her maneuverability |
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Definition
A. only if she is towing astern
Answer: A, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. Inland towing alongside requires yellow over yellow on the stern. International alongside tow only requires the white stern light. |
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Term
BOTH INTERNATIONAL & INLAND: What dayshape must be shown by a vessel 25 meters in length aground during daylight hours?
A. one black ball
B. two black balls
C. three black balls
D. four black balls |
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Definition
C. three black balls
Answer: C, Rule 30.d. A vessel aground shall exhibit, along with the appropriate anchor lights, two all-round red lights in a vertical line, and three balls in a vertical line. |
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Term
BOTH INTERNATIONAL & INLAND: An orange flag showing a black circle and square is recognized as being a ____.
A. signal indicating a course change
B. distress signal
C. signal of asking to communicate with another vessel
D. signal indicating danger |
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Definition
B. distress signal
Answer: B, Annex iv, 87.1.f. |
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Term
BOTH INTERNATIONAL & INLAND: When is a stand-on vessel first allowed by the rules to take action in order to avoid collision?
A. When the two vessels are less than half a mile from each other
B. When the give way vessel is not taking appropriate action to avoid collision
C. When collision is imminent
D. The stand-on vessel is not allowed to take action at anytime. |
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Definition
B. When the give way vessel is not taking appropriate action to avoid collision
Answer: B, Rule 17.a.ii Where one of two vessels is to keep out of the way of another, the other shall keep her course and speed. The latter vessel may, however, take action to avoid collision by her maneuver alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: You are crossing a narrow channel in a 15-meter vessel when you sight a tankship off your port bow coming up the channel. Which statement is correct?
A. Yours is the give-way vessel because it is less than 30 meters long
B. You may not impede the safe passage of the tankship
C. The tankship has the right of way because it is to port of your vessel
D. The tankship has the right of way because it is the larger of the two vessels |
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Definition
B. You may not impede the safe passage of the tankship
Answer: B, , Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: In restricted visibility, a vessel restricted in her ability to maneuver, at anchor, would sound a fog signal of _____.
A. The rapid ringing of a bell for five seconds every minute
B. Two prolonged and two short blasts every two minutes
C. one prolonged and two short blasts every two minutes
D. two prolonged an one short blast every two minutes |
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Definition
C. one prolonged and two short blasts every two minutes
Answer: C, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A 15-meter sailing vessel would be required to show ___.
A. sidelights, sternlight, and a red light over a green light on the mast
B. sidelights, a sternlight, but they may be in a combined lantern on the mast
C. separate sidelights and sternlight
D. sidelights only |
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Definition
B. sidelights, a sternlight, but they may be in a combined lantern on the mast
Answer: B, Rule 25.b. A sailing vessel of less than 20 meters in length may combine into one lantern her sidelights and sternlight to be carried near the top of the mast where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: The use of the danger signal _______.
A. replaces directional signals
B. makes the other vessel the give-way vessel
C. indicates doubt as to the other vessel's action
D. make sit necessary to slow or stop |
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Definition
C. indicates doubt as to the other vessel's action
Answer: C, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog, you hear the fog signal of another vessel ahead. If a risk of collision exists, you must _______.
A. slow to bare steerageway and navigate with caution
B. sound three short blasts and back your engines
C. stop your engines and navigate with caution
D. continue on your course and speed until the other vessel is sighted |
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Definition
A. slow to bare steerageway and navigate with caution
Answer: A, Rule 19.e. Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close quarters situation with another vessel forward of her beam, shall reduce her speed to the minimum which she can be kept on course. She shall, if necessary, take all her way off and, in any event, navigate with extreme caution until the danger of collision is over. |
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Term
BOTH INTERNATIONAL & INLAND: What lights, if any, would you exhibit at night if your vessel were broken down and being towed by another vessel?
A. none
B. Same lights as for a power-driven vessel underway
C. A white light forward and a white light aft
D. The colored sidelights and a white sternlight |
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Definition
D. The colored sidelights and a white sternlight
Answer: D, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: If your vessel is underway in fog and you hear one prolonged and three short blasts, this indicates a ____.
A. vessel not under command
B. vessel sailing
C. vessel in distress
D. vessel being towed |
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Definition
D. vessel being towed
Answer: D, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: At night, what lights would you see on a vessel engaged in fishing?
A. two red lights, one over the other
B. a green light over a red light
C. A red light over a white light
D. a white light over a red light |
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Definition
C. A red light over a white light
Answer: C, Rule 26.c. A vessel engaged in fishing, other than trawling, shall exhibit an all-round red over white in a vertical line, or a shape consisting of two cones with apexes together in a vertical line. When there is outlying gear extending more than 15 meters from the vessel, an all-round white light, or a cone apex upwards, in the direction of the gear. Additionally, when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: During daylight hours, what should a vessel display to indicate that it is fishing?
A. black ball
B. green ball
C. basket
D. white flat |
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Definition
C. basket
Answer: C, None of the above are true anymore. Edition "D" dated 25 Mar 1999 deleted any reference to the optional basket dayshape for fishing vessels under 20 meters. A basket in the rigging is no longer a dayshape for anyone. |
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Term
BOTH INTERNATIONAL & INLAND: You are on a vessel nearing a bend in the channel where, because of the height of the bank, you cannot see a vessel approaching from the opposite direction. You should sound ______.
A. one short blast
B. one prolonged blast
C. One long blast
D. five or more short blasts |
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Definition
B. one prolonged blast
Answer: B, Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is considered to be a "vessel restricted in her ability to maneuver" under the nav rules?
A. vessel at anchor
B. vessel dredging
C. a vessel fishing
D. vessel towing |
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Definition
B. vessel dredging
Answer: B, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A tug is towing three manned barges in line in the fog. The first vessel of the tow should sound ______.
A. no fog signal
B. one short blast
C. one prolonged and three short blasts
D. one prolonged, one short, and one prolonged blast |
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Definition
A. no fog signal
Answer: A, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: All fog signals shall be sounded every two minutes with the exception of a vessel ________.
A. underway or making way
B. under sail or under tow
C. anchored or aground
D. not under command or restricted in her ability to maneuver |
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Definition
C. anchored or aground
Answer: C, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: In reduced visibility, you hear two prolonged blasts of a whistle. This signal is sounded by a ______.
A. power-driven vessel dead in the water
B. sailing vessel on the port tack
C. vessel not under command
D. vessel fishing with nets |
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Definition
A. power-driven vessel dead in the water
Answer: A, Rule 35.b A power driven vessel underway, but stopped and making no way through the water, shall sound at intervals of not more than 2 minutes, 2 prolonged blasts in succession with an interval of about 2 seconds between them. |
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Term
BOTH INTERNATIONAL & INLAND: A 200-meter vessel restricted in its ability to maneuver, at anchor, will sound a fog signal of ______.
A. 5 sec ringing of a bell forward and a 5 sec sounding of a gong aft at intervals of 1 minute
B. one prolonged followed by two short blasts every 2 minutes
C. one prolonged followed by three short blasts every minute
D. one prolonged followed by three short blasts every two minutes |
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Definition
B. one prolonged followed by two short blasts every 2 minutes
Answer: B, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A partially submerged object towed by a vessel must show during the day _________.
A. a diamond shape when the length of the tow is 200 meters or less
B. a diamond shape only when the length of the tow exceeds 200 meters in length
C. one black ball
D. one black ball only when the length of the tow exceeds 200 meters in length |
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Definition
A. a diamond shape when the length of the tow is 200 meters or less
Answer: A, Rule 24.g. An inconspicuous, partly submerged vessel or object being towed shall exhibit one all-round white light at or near each end if it is less than 25 meters in breadth, four all-round white lights to mark its length and breadth if it is 25 meters or more in breadth, and if it exceeds 100 meters in length, additional all-round white lights between these lights so that the distance between the lights shall not exceed 100 meters. Additionally, a diamond shape at or near the aftermost extremity of the last vessel or object being towed. The towing vessel may also direct a searchlight in the direction of the tow to indicate its presence to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: What dayshape is to be shown by a vessel aground?
A. a cylinder
B. two cones with their apexes together
C. two black balls in a vertical line
d. three black balls in a vertical line |
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Definition
d. three black balls in a vertical line
Answer: D, Rule 30.d. A vessel aground shall exhibit, along with the appropriate anchor lights, two all-round red lights in a vertical line, and three balls in a vertical line. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is NOT a distress signal?
A. red flares or red rockets
B. continuous sounding of fog signal
C. international code flags "November" over "Charlie"
D. basket hanging in the rigging |
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Definition
D. basket hanging in the rigging
Answer: D, Annex iv, 87.1 |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning a vessel equipped with operational radar?
A. she must use this equipment to obtain early warning of risk of collision.
B. the use of a radar excuses a vessel from the need of a lookout
C. The radar equipment is only required to be used in restricted visibility.
D. The safe speed of such a vessel will likely be greater than that of vessels without radar |
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Definition
A. she must use this equipment to obtain early warning of risk of collision.
Answer: A, Rule 7.b Proper use shall be made of radar equipment if fitted and operational, including long-range scanning to obtain early warning of risk of collision and radar plotting or equivalent systematic observation of detected objects.. |
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Term
BOTH INTERNATIONAL & INLAND: In daytime, a 19-meter vessel underway and fishing with nets or lines may indicate her occupation by displaying a _________.
A. black cone
B. black or white vertically striped ball
C. black ball
D. basket |
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Definition
| Answer: None of the above are true anymore. Edition "D" dated 25 Mar 1999 deleted any reference to the optional basket dayshape for fishing vessels under 20 meters. A basket in the rigging is no longer a dayshape for anyone. |
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Term
BOTH INTERNATIONAL & INLAND: A pilot vessel on pilotage duty shall show identity lights ________.
A. at any time while underway
B. while at anchor
C. while alongside a vessel
D. all of the above |
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Definition
D. all of the above
Answer: D, , A vessel engaged on pilotage duty shall exhibit an all-round white over all-round red at the masthead, when underway a sidelights and a sternlight, and anchor lights when at anchor. When not engaged on pilotage duty shall exhibit the lights or shapes prescribed for a similar vessel of her length. |
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Term
BOTH INTERNATIONAL & INLAND: You are operating in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. The rules require you to __________.
A. stop your engine
B. sound two prolonged blast of the whistle
C. sound the danger signal
D. slow to bare steerageway |
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Definition
D. slow to bare steerageway
Answer: D, Rule 19.e. Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close quarters situation with another vessel forward of her beam, shall reduce her speed to the minimum which she can be kept on course. She shall, if necessary, take all her way off and, in any event, navigate with extreme caution until the danger of collision is over. |
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Term
BOTH INTERNATIONAL & INLAND: A stand-on vessel, in a crossing situation, is allowed to take action when ________.
A. collision is imminent
B. the distance between the vessels is less than one mile
C. it becomes apparent to her that the give-way vesel is not taking appropriate action
D. the relative speed of the vessels indicate that they will meet in less than three minutes |
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Definition
C. it becomes apparent to her that the give-way vesel is not taking appropriate action
Answer: C, Rule 17.a.ii Where one of two vessels is to keep out of the way of another, the other shall keep her course and speed. The latter vessel may, however, take action to avoid collision by her maneuver alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: If you approach a vessel in a narrow channel, and that vessel can only be navigated safely within the channel, you should ________.
A. hold your course and speed
B. sound the danger signal
C. initiate an exchange of passing signals
D. not cross the channel if you might impede the other vessel |
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Definition
D. not cross the channel if you might impede the other vessel
Answer: D, Rule 9.c. A vessel engaged in fishing shall not impede the passage of any other vessel navigating within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is required to sound a fog signal of one prolonged followed by two short blasts?
A. a vessel not under command
B. a sailing vessel, underway
C. a vessel restricted in its ability to maneuver, at anchor
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: At night, a broken down vessel being towed would show the same lights as _______.
A. a power driven vessel underway
B. the towing vessel
C. a barge
D. a vessel at anchor |
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Definition
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Term
BOTH INTERNATIONAL & INLAND: What is the optional whistle signal which may be sounded by a vessel at anchor?
A. Two prolonged followed by one short blast
B. One short followed by two prolonged blasts
C. One short, one prolonged, followed by one short blast
D. Four short blasts |
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Definition
C. One short, one prolonged, followed by one short blast
Answer: C, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: The minimum length of a power-driven vessel that must show forward and after masthead lights is ________.
A. 30 meters
B. 50 meters
C. 75 meters
D. 100 meters |
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Definition
B. 50 meters
Answer: B, Rule 23.a. A power driven vessel underway shall exhibit a masthead light forward, a second masthead light abaft and higher this light ( A vessel less than 50 meters may not exhibit this light), sidelights, and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: What light(s), if any, would you show at night if your vessel was broken down and being towed by another vessel?
A. none
B. same lights as for a power-driven vessel underway
C. A white light forward and a white light aft
D. The colored sidelights and a white sternlight |
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Definition
D. The colored sidelights and a white sternlight
Answer: D, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel not under command making way at night would show ______________.
A. Two all-round red lights in a vertical line
B. anchor lights and running lights
C. two all-round white lights in a vertical line, sidelights and a sternlight.
D. two all-round red lights in a vertical line, sidelights, and a sternlight |
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Definition
D. two all-round red lights in a vertical line, sidelights, and a sternlight
Answer: D, Rule 27.a. A vessel not under command shall exhibit two all round red lights in a vertical line where they can best be seen, two balls in a vertical line where they can best be seen, and when making way through the water sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: In a dense fog, you hear a whistle signal of one prolonged blast followed by three short blasts. This signal is blown by a ___________.
A. manned vessel being towed
B. fishing vessel underway trawling
C. pilot vessel underway making a special signal
D. vessel not under command |
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Definition
A. manned vessel being towed
Answer: A, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Because of her occupation, a vessel shows a dayshape of two cones with apexes together. If under 20 meters in length, she may instead show _____.
A. a diamond shape
B. two balls in a vertical line
C. a basket
D. None of the above |
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Definition
D. None of the above
Answer: D None of the above are true anymore. Edition "D" dated 25 Mar 1999 deleted any reference to the optional basket dayshape for fishing vessels under 20 meters. A basket in the rigging is no longer a dayshape for anyone. |
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Term
BOTH INTERNATIONAL & INLAND: While underway and pushing a barge ahead, your vessel enters a heavy rain storm. You should sound _________.
A. a prolonged blast every two minutes
B. two prolonged blasts every two minutes
C. one prolonged and two short blasts every two minutes
D. one long blast every two minutes |
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Definition
C. one prolonged and two short blasts every two minutes
Answer: C, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: On open waters, a power driven vessel shall keep out of the way of ___________.
A. vessel on her port side that is crossing her course
B. vessel that is overtaking her
C. seaplane on the water
D. sailing vessel |
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Definition
D. sailing vessel
Answer: D, Rule 18.a. A power driven vessel shall keep out of the way of a vessel not under command, a vessel restricted in her ability to maneuver, a vessel engaged in fishing, and sailing vessels. |
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Term
BOTH INTERNATIONAL & INLAND: You are overtaking a vessel at night and you see a yellow light showing above the sternlight of the overtaken vessel. The overtaken vessel ______________.
A. underway and dredging
B. pushing ahead or towing alongside
C. towing astern
D. a pilot vessel |
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Definition
C. towing astern
Answer: C, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: Your vessel is at anchor in fog. The fog signal of another vessel, apparently underway, has been growing louder and the danger of collision appears to exist. In addition to the required fog signal, what signal may be used to indicate your presence?
A. five or more short rapid whistle blasts
B. one short, one prolonged, and one short whistle blast
C. one prolonged followed by two short whistle blasts
D. No other signal may be used |
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Definition
B. one short, one prolonged, and one short whistle blast
Answer: B, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: All of the following are distress signals under the rules EXCEPT ___________.
A. International Code signal "AA"
B. Orange-colored smoke
C. red flares
D. the repeated raising and lowering of outstretched arms |
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Definition
A. International Code signal "AA"
Answer: A, Annex iv, 87.1 |
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Term
BOTH INTERNATIONAL & INLAND: A tug is towing three manned barges in line in fog. The third vessel of the tow should sound ________.
A. no fog signal
B. one short blast
C. one prolonged and three short blasts
D. one prolonged, one short and one prolonged blast |
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Definition
C. one prolonged and three short blasts
Answer: C, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel, when towing another vessel astern shall show _______.
A. two towing lights in a vertical line.
B. a towing light above the sternlight
C. a towing light below the sternlight
D. Only a sternlight at the stern |
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Definition
B. a towing light above the sternlight
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is NOT classified as "restricted in her ability to maneuver"?
A. a vessel picking up a navigation mark
B. a vessel transferring cargo while underway
C. a vessel whose anchor is fouled
D. a vessel in a towed operation that restricts the ability of the vessel and her tow to change course |
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Definition
C. a vessel whose anchor is fouled
Answer: C, A fouled anchor is an exceptional circumstance and is considered not under command. |
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Term
BOTH INTERNATIONAL & INLAND: During the day, a vessel picking up a submarine cable shall carry ______.
A. Dayshapes of red ball -white diamond-red ball in a vertical line
B. Dayshapes of two black balls in a vertical line
C. Dayshapes of black ball-red diamond-black ball in a vertical line
D. Dayshapes of black ball-black diamond-black ball in a vertical line |
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Definition
D. Dayshapes of black ball-black diamond-black ball in a vertical line
Answer: D Rule 27.b. A vessel restricted in her ability to maneuver (except a vessel engaged in mineclearance ops) shall exhibit where they can best be seen an all-round red over white over red light, or shapes of ball over diamond over ball. When making way through the water she shall show masthead lights, sidelights and a sternlight. When at anchor, in addition to the red over white over red, appropriate anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog, you hear a prolonged blast from another vessel. This signal indicates a _____.
A. sailboat underway
B. power-driven vessel underway, towing
C. power-driven vessel underway
D. vessel being towed |
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Definition
C. power-driven vessel underway
Answer: C, Rule 35.a In or near an area of restricted visibility, whether by day or night, a power driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast. |
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Term
BOTH INTERNATIONAL & INLAND: While underway your vessel enters fog. You stop your engines and the vessel is dead in the water. What fog signal should you sound?
A. one prolonged blast every two minutes
B. two prolonged blast every two minutes
C. Three short blasts every two minutes
D. One prolonged and two short blasts every two miutes |
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Definition
B. two prolonged blast every two minutes
Answer: B, Rule 35.b A power driven vessel underway, but stopped and making no way through the water, shall sound at intervals of not more than 2 minutes, 2 prolonged blasts in succession with an interval of about 2 seconds between them. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in a fog when you hear a whistle signal of one prolonged blast followed by two short blasts. This signal could indicate all of the following EXCEPT a vessel _______
A. being towed
B not under command
C. fishing with trawls
D. towing astern |
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Definition
A. being towed
Answer: A, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A light signal consisting of three flashes means _______.
A. I am in doubt as to your actions
B. my engines are full speed astern
C. I desire to overtake you
D. I am operating astern propulsion |
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Definition
D. I am operating astern propulsion
Answer: D, Rule 34.b.i. A vessel may supplement whistle signals by light signals. Three flashes mean "I am operating astern propulsion" |
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Term
BOTH INTERNATIONAL & INLAND: You are watching another vessel approach and her compass bearing is not changing. This indicates that ______.
A. you are the stand on vessel
B. a risk of collision exists
C. a special circumstances situation exists
D. the other vessel is dead in the water |
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Definition
B. a risk of collision exists
Answer: B, Rule 7.d. Risk of collision shall be deemed to exist if the compass bearing of an approaching vessel does not appreciably change, and such risk may sometimes exist even when an appreciable bearing change is evident, particularly when approaching a very large vessel or a tow, or when approaching a vessel at very close range. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel 30 meters in length and aground would display a dayshape consisting of ______.
A. a cylinder
B. one black ball
C. two black balls in a vertical line
D. three black balls in a vertical line |
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Definition
D. three black balls in a vertical line
Answer: D, Rule 30.d. A vessel aground shall exhibit, along with the appropriate anchor lights, two all-round red lights in a vertical line, and three balls in a vertical line. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is NOT a distress signal?
A. a continuous sounding of the fog horn
B. firing a gun every minute
C. five or more short rapid blasts on the whistle
D. A square flag and ball flown from the mast |
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Definition
C. five or more short rapid blasts on the whistle
Answer: C, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning a vessel equipped with operational radar?
A. the master of the vessel must be on the bridge when the radar is in use
B. the radar equipment is only required to be used in restricted visibility
C. the use of a radar excuses a vessel from the need of a look-out
D. the equipment must be used to obtain early warning of risk of collision |
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Definition
D. the equipment must be used to obtain early warning of risk of collision
Answer: D, Rule 7.b Proper use shall be made of radar equipment if fitted and operational, including long-range scanning to obtain early warning of risk of collision and radar plotting or equivalent systematic observation of detected objects.. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog you hear another vessel sounding two prolonged blasts every two minutes. This signal indicates a vessel ______.
A. making way through the water
B. towing
C. drifting
D. anchored |
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Definition
C. drifting
Answer: C, Rule 35.b A power driven vessel underway, but stopped and making no way through the water, shall sound at intervals of not more than 2 minutes, 2 prolonged blasts in succession with an interval of about 2 seconds between them. |
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Term
BOTH INTERNATIONAL & INLAND: Fog signals for vessels not underway shall be sounded at intervals of not more than _____.
A. 15 minutes
B. 5 minutes
C. 2 minutes
D. 1 minute |
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Definition
D. 1 minute
Answer: D, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel is carrying three lights in a vertical line. The highest and lowest of these are red and the middle light is white. Which statement is always true?
A. During the day, she would display three balls in a vertical line
B. If making way, she would show masthead lights at night
C. If at anchor, she need not show anchor lights while displaying identifying lights.
D. her fog signal would consist of a rapid ringing of a bell for five seconds every minute |
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Definition
B. If making way, she would show masthead lights at night
Answer: B, , Rule 27.b. A vessel restricted in her ability to maneuver (except a vessel engaged in mineclearance ops) shall exhibit where they can best be seen an all-round red over white over red light, or shapes of ball over diamond over ball. When making way through the water she shall show masthead lights, sidelights and a sternlight. When at anchor, in addition to the red over white over red, appropriate anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: You are on a power-driven vessel in fog. Your vessel is proceeding at a safe speed when you hear a fog signal ahead of you. In this situation, the rules require to navigate with caution until the danger of collision is over and to __________________.
A. slow to less than 2 knots
B. reduce to bare steerageway
C. stop your engines
D. initiate a radar plot |
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Definition
B. reduce to bare steerageway
Answer: B, Rule 19.e. Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close quarters situation with another vessel forward of her beam, shall reduce her speed to the minimum which she can be kept on course. She shall, if necessary, take all her way off and, in any event, navigate with extreme caution until the danger of collision is over. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in a fog you hear a signal of three strokes of a bell, a rapid ringing of the bell, and three more strokes of the bell. This signal is made by a vessel _____.
A. at anchor and giving warning
B. aground
C. at anchor and greater than 100 meters in length
D. not under command and at anchor |
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Definition
B. aground
Answer: B, Rule 35.h (Int) or Rule 35.g (Inland). A vessel aground shall give the bell signal and if required the gong signal prescribed for a vessel at anchor, and shall in addition give three separate and distinct strokes on the bell immediately before and after the rapid ringing of the bell. A vessel aground may in addition sound an appropriate whistle signal. . |
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Term
BOTH INTERNATIONAL & INLAND: The maximum length of a power-driven vessel which may show an al-round white light and sidelights instead of a masthead light, sidelights and a sternlight is ______.
A. 7 meters
B. 10 meters
C. 11 meters
D. 20 meters |
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Definition
C. 11 meters
Answer: C, Rule 23.c A power driven vessel of less than 12 meters in length may, instead of standard running lights, exhibit an all-round white light and sidelights. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog, you hear a signal of one prolonged blast followed by three short blasts. This is the fog signal for a vessel __________.
A. towing
B. being towed (manned)
C. Under sail
D. at anchor |
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Definition
B. being towed (manned)
Answer: B, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is to sound a fog signal of one prolonged followed by two short blasts?
A vessel not under command
B. A sailing vessel underway
C. A vessel restricted in its ability to maneuver, at anchor
D. All of the above |
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Definition
D. All of the above
Answer: D, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: At night you observe a vessel ahead to show three flashes of white light. This signal indicates that the vessel ahead is ___________.
A. in distress
B. approaching a bend in the channel
C. Operating astern propulsion
D. intending to overtake another vessel |
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Definition
C. Operating astern propulsion
Answer: C, Rule 34.b.i. A vessel may supplement whistle signals by light signals. Three flashes mean "I am operating astern propulsion" |
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Term
BOTH INTERNATIONAL & INLAND: The use of the danger signal ______.
A. replaces directional signals
B. makes the other the stand-on vessel
C. indicates doubt as to another vessel actions
D. is used as a "mayday" signal |
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Definition
C. indicates doubt as to another vessel actions
Answer: C, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: Which power-driven vessel is NOT required to carry a light in the position of the after masthead light?
A. A pushing vessel and vessel being pushed, in a composite unit and 100 meters in length
B. A vessel of 60 meters in length towing astern
C. a vessel of 45 meters in length trolling
D. any vessel constrained by her draft |
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Definition
C. a vessel of 45 meters in length trolling
Answer: C, Rule 23.a. A power driven vessel underway shall exhibit a masthead light forward, a second masthead light abaft and higher this light ( A vessel less than 50 meters may not exhibit this light), sidelights, and a sternlight |
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Term
BOTH INTERNATIONAL & INLAND: Which requirement must be met in order for a stand-on vessel to take action to avoid collision in accordance with Rule 17?
A. Risk of collision must have been deemed to exist.
B. The give-way vessel is not taking appropriate action.
C. The vessels must be within half a mile of each other
D. There are no requirements to be met. The stand-on vessel may take action anytime |
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Definition
B. The give-way vessel is not taking appropriate action.
Answer: B, Rule 17.a.ii Where one of two vessels is to keep out of the way of another, the other shall keep her course and speed. The latter vessel may, however, take action to avoid collision by her maneuver alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel being towed alongside shall exhibit ________.
A. one all-round white light
B. sidelights and a sternlight
C. only the outboard sidelight and a sternlight
D. a masthead light, sidelights, and a sternlight |
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Definition
B. sidelights and a sternlight
Answer: B, Rule 24.f.i.i. A vessel being towed alongside shall exhibit a sternlight and at the forward end, sidelights. For Inland rules a vessel being towed alongside also requires a special flashing light at the forward end. |
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Term
BOTH INTERNATIONAL & INLAND: In which situation would risk of collision exist?
A. A vessel is 22 degrees on your port bow, range increasing, bearing changing slightly to the right
B. A vessel is broad on your starboard beam, range decreasing, bearing changing rapidly to the right
C. A vessel is 22 degrees abaft your port beam, range increasing, bearing is constant.
D. A vessel is on your starboard quarter, range decreasing, bearing is constant. |
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Definition
D. A vessel is on your starboard quarter, range decreasing, bearing is constant.
Answer: D. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound ________.
A. one long blast
B. one prolonged blast
C. the danger signal
D. two short blasts |
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Definition
B. one prolonged blast
Answer: B, Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: In fog, you hear apparently forward of your beam a fog signal of 2 prolonged blasts in succession every two minutes. This signal indicates a _________.
A. power-driven vessel making way through the water
B. vessel being pushed ahead
C. vessel restricted in her ability to maneuver
D. power-driven vessel underway but stopped and making no way through the water |
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Definition
D. power-driven vessel underway but stopped and making no way through the water
Answer: D, Rule 35.b A power driven vessel underway, but stopped and making no way through the water, shall sound at intervals of not more than 2 minutes, 2 prolonged blasts in succession with an interval of about 2 seconds between them. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel being towed will show ____________.
A. a forward masthead light
B. sidelights
C. a towing light
D. all of the above |
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Definition
B. sidelights
Answer: B, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: In fog, a vessel being towed, if manned, shall sound a fog signal of _______________.
A. two short blasts
B. three short blasts
C. one prolonged and two short blasts
D. one prolonged and three short blasts |
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Definition
D. one prolonged and three short blasts
Answer: D, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is directed not to impede the passage of a vessel which can only navigate inside a narrow channel?
A. a vessel of less than 20 meters in length
B. A vessel not under command
C. A vessel engaged in surveying
D. All of the above |
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Definition
A. a vessel of less than 20 meters in length
Answer: A, , Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: While you are underway, navigation lights must be displayed on your vessel __________.
A. during all periods of reduced visibility
B. at all times
C. at night only when other vessels may be in the area
D. at night only when vessels are detected on radar |
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Definition
A. during all periods of reduced visibility
Answer: A, Rule 20.c. The lights prescribed by these rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary. |
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Term
BOTH INTERNATIONAL & INLAND: When underway in fog, you might hear any of the following signals EXCEPT _____.
A. one prolonged blast every one minute
B. two prolonged blasts every two minutes
C. one prolonged and two short blasts every two minutes
D. ringing of a bell for five seconds at intervals of two minutes |
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Definition
D. ringing of a bell for five seconds at intervals of two minutes
Answer: D, Rule 35.f. A vessel at anchor shall at intervals of not more than 1 minute ring the bell rapidly for about five seconds. The one prolonged blast every one minute could be explained by Rule 35.a. A power driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast. |
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Term
BOTH INTERNATIONAL & INLAND: What dayshape must be shown on a partially submerged vessel which is being towed?
A. A diamond
B. A cone
C. One black ball
D. Two black balls in a vertical line |
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Definition
A. A diamond
Answer: A, Rule 24.g. An inconspicuous, partly submerged vessel or object being towed shall exhibit one all-round white light at or near each end if it is less than 25 meters in breadth, four all-round white lights to mark its length and breadth if it is 25 meters or more in breadth, and if it exceeds 100 meters in length, additional all-round white lights between these lights so that the distance between the lights shall not exceed 100 meters. Additionally, a diamond shape at or near the aftermost extremity of the last vessel or object being towed. The towing vessel may also direct a searchlight in the direction of the tow to indicate its presence to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is to be regarded as a vessel restricted in ability to maneuver?
A. vessel fishing with trawls.
B. vessel which has lost the use of her steering gear
C. vessel with a draft of such depth that she cannot change her course
D. Vessel engaged in mineclearing |
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Definition
D. Vessel engaged in mineclearing
Answer: D, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. Lost steering would be not under command. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following vessels would show 3 dayshapes in a vertical line, the highest and lowest being balls and the middle shape being a diamond?
A. Vessel not under command
B. vessel constrained by her drat
C. vessel minesweeping
D. vessel restricted in her ability to maneuver |
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Definition
D. vessel restricted in her ability to maneuver
Answer: D, Rule 27.b. A vessel restricted in her ability to maneuver (except a vessel engaged in mineclearance ops) shall exhibit where they can best be seen an all-round red over white over red light, or shapes of ball over diamond over ball. When making way through the water she shall show masthead lights, sidelights and a sternlight. When at anchor, in addition to the red over white over red, appropriate anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel "not under command" at night must show how many lights in a vertical line?
A. Three red
B. Two red
C. Two white
D. Three white |
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Definition
B. Two red
Answer: B, Rule 27.a. A vessel not under command shall exhibit two all round red lights in a vertical line where they can best be seen, two balls in a vertical line where they can best be seen, and when making way through the water sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: In order for a vessel to be "engaged in fishing" she must be _______.
A. underway
B. using gear which extends more than 50 meters outboard
C. using a seine of some type
D. using gear which restricts her maneuverability |
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Definition
D. using gear which restricts her maneuverability
Answer: D, Rule 3.d. The term "vessel engaged in fishing" means any vessel fishing with nets, lines, trawls, or other fishing apparatus which restricts maneuverability, but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict maneuverability |
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Term
BOTH INTERNATIONAL & INLAND: While underway and in sight of another vessel you put your engines on astern propulsion. Which statement concerning whistle signals is true?
A. You must sound three short blasts on the whistle
B. you must sound one blast if backing to starboard
C. you must sound whistle signals only if the vessels are meeting
D. You need not sound any whistle signals |
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Definition
A. You must sound three short blasts on the whistle
Answer: A, Rule 34.a Three short blasts mean "I am operating astern propulsion" |
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Term
BOTH INTERNATIONAL & INLAND: When shall the stand-on vessel in a crossing situation take action to avoid the other vessel?
A. When a risk of collision exists
B. when action by the give way vessel alone will not prevent a collision
C. When the bearing to give-way vessel becomes steady
D. when the vessels become less than 1/2 mile apart |
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Definition
B. when action by the give way vessel alone will not prevent a collision
Answer: B, Rule 17.a.ii Where one of two vessels is to keep out of the way of another, the other shall keep her course and speed. The latter vessel may, however, take action to avoid collision by her maneuver alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: What signal would a vessel aground show during daylight?
A. One black ball
B. two black balls
C. three black balls
D. four black balls |
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Definition
C. three black balls
Answer: C, Rule 30.d. A vessel aground shall exhibit, along with the appropriate anchor lights, two all-round red lights in a vertical line, and three balls in a vertical line. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following would not be a distress signal?
A. flames on a vessel
B. vertical motion of a white lantern at night
C. code flags "November" over "Charlie"
D. Dye marker on the water |
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Definition
B. vertical motion of a white lantern at night
Answer: B, Annex iv, 87.1 |
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Term
BOTH INTERNATIONAL & INLAND: Which statement about a 25 meter auxiliary sailboat is true?
A. the sidelights and sternlight may be combined in one lantern
B. when operating under sail, her fog signal would consist of one prolonged blast.
C. she may show a green light over a red light at the masthead
D. She must show fixed sidelights, and may not use a portable lantern |
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Definition
D. She must show fixed sidelights, and may not use a portable lantern
Answer: D, Rule 25.a A sailing vessel underway shall exhibit sidelights and a stern light. Rule 25. b. In a sailing vessel of less than 20 meters in length, these lights may be combined in one lantern carried at or near the top of the mast. Rule 25.c. A sailing vessel underway may, in addition to sidelights and sternlight, exhibit on her mast an all-round red over an all-round green light. But these lights shall not be shown if using a single lantern combining the sidelights and sternlight) . Rule 25.d. A sailing vessel of less than 7 meters in length may have ready at hand an electric torch or lighted lantern showing a white light which shall be exhibited in sufficient time to prevent collision. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following vessels shall not impede the passage of a vessel which can safely navigate only within a narrow channel or fairway.
A. a vessel of less than 20 meters in length
B. a vessel sailing
C. a vessel fishing
D. All of the above |
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Definition
D. All of the above
Answer: D, , Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. Rule 9.c. A vessel engaged in fishing shall not impede the passage of any other vessel navigating within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog, you hear a whistle signal of one prolonged blast followed by two short blasts. This signal could mean all of the following EXCEPT a vessel __________.
A. not under command
B. towing astern
C. fishing with trawls
D. being towed |
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Definition
D. being towed
Answer: D, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: In which situation would you consider a risk of collision to exist?
A. A vessel is 22 degrees on your port bow, range increasing, bearing changing slightly to the right
B. a vessel is broad on your starboard beam, range decreasing, bearing changing rapidly to the right
C. a vessel is 22 degrees abaft your port beam, range increasing, bearing is constant.
D. A vessel is on your starboard quarter, range decreasing, bearing is constant |
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Definition
D. A vessel is on your starboard quarter, range decreasing, bearing is constant
Answer: D. |
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Term
BOTH INTERNATIONAL & INLAND: Vessel "A" is overtaking vessel "B". Vessel "B" should _____________.
A. should change course to the right
B. should slow down until vessel "A: has passed
C. should hold her course and speed
D. may steer various courses and vessel "A: must keep clear |
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Definition
C. should hold her course and speed
Answer: C, , Rule 13.a. Any vessel overtaking any other shall keep out of the way of the vessel being overtaken. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel aground in fog shall sound, in addition to the proper anchor signal, which of the following?
A. three strokes before and after sounding on the gong
B. three strokes before and after the ringing of the bell
C. Four short blasts on the whistle
D. One prolonged and one short blast on the whistle |
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Definition
B. three strokes before and after the ringing of the bell
Answer: B, Rule 35.h (Int) or Rule 35.g (Inland). A vessel aground shall give the bell signal and if required the gong signal prescribed for a vessel at anchor, and shall in addition give three separate and distinct strokes on the bell immediately before and after the rapid ringing of the bell. A vessel aground may in addition sound an appropriate whistle signal. . |
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Term
BOTH INTERNATIONAL & INLAND: A vessel which, because of her occupation, shows a dayshape of two cones with their apexes together may, if under 20 meters in length, show ________.
A. a diamond shape
B. two balls in a vertical line
C. a basket
D. none of the above |
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Definition
D. none of the above
Answer: D, None of the above are true anymore. Edition "D" dated 25 Mar 1999 deleted any reference to the optional basket dayshape for fishing vessels under 20 meters. A basket in the rigging is no longer a dayshape for anyone. |
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Term
BOTH INTERNATIONAL & INLAND: Two vessels are approaching each other near head on. What action should be taken to avoid collision?
A. The first vessel to sight the other should give way.
B. The vessel making the slower speed should give way.
C. Both vessels should alter course to starboard
D. Both vessels should alter course to port |
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Definition
C. Both vessels should alter course to starboard
Answer: C, Rule 14.a. When two power-driven vessels are meting on reciprocal or nearly reciprocal courses so as to involve risk of collision each shall alter her course to starboard so that each shall pass on the port side of the other. |
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Term
BOTH INTERNATIONAL & INLAND: Your vessel is 25 meters long and anchored in restricted visibility. You are required to sound the proper fog signal at intervals of not more than _______.
A. 30 seconds
B. one minute
C. two minutes
D. Three minutes |
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Definition
B. one minute
Answer: B, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog, you hear a short blast, a prolonged blast and a short blast of a whistle. This signal indicates a ________________.
A. vessel towing in fog
B. sailboat underway in fog
C. vessel being towed in fog
D. vessel anchored in fog |
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Definition
D. vessel anchored in fog
Answer: D, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: In a crossing situation in which you are the stand-on vessel, you may hold your course and speed until ___.
A. The other vessel takes necessary action
B. the other vessel gets to within half a mile of your vessel
C. action by the give-way vessel alone will not prevent collision
D. the other vessel gets to within a quarter mile ofyour vessel |
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Definition
C. action by the give-way vessel alone will not prevent collision
Answer: C, Rule 17.a.ii Where one of two vessels is to keep out of the way of another, the other shall keep her course and speed. The latter vessel may, however, take action to avoid collision by her maneuver alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: The arc of visibility for sidelights is from right ahead to _____.
A. 22.5 degrees abaft the beam
B. abeam
C. 22.5 degrees forward of the beam
D. 135 degrees abaft the beam |
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Definition
A. 22.5 degrees abaft the beam
Answer: A, Rule 21.b. Sidelights means a green light on the starboard side and a red light on the port side each showing an unbroken light over an arc of the horizon if 112.5 degrees and so fixed as to show the light from right ahead to 22.5 degrees abaft the beam on its respective side. In a vessel of less than 20 meters in length the sidelights may be combined in one lantern carried on the fore and aft centerline of the vessel. |
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Term
BOTH INTERNATIONAL & INLAND: In narrow channels, vessels of less than what length shall not impede the safe passage of vessels which can navigate only inside that channel?
A. 20 meters
B. 50 meters
C. 65 meters
D. 100 meters |
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Definition
A. 20 meters
Answer: A, , Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: While underway and in sight of another vessel, you put your engines full speed astern. Which statement concerning whistle signals is true?
A. You must sound three short blasts on the whistle
B. you must sound one blast if backing to starboard
C. you must sound whistle signals only if the vessels are meeting
D. You need not sound any whistle signals |
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Definition
A. You must sound three short blasts on the whistle
Answer: A. Rule 34.a. Three short blasts mean "I am operating astern propulsion". |
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Term
BOTH INTERNATIONAL & INLAND: A vessel showing a yellow light over a white light at night is a vessel ______.
A. engaged in piloting
B. towing astern
C. engaged in fishing
D. in distress |
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Definition
B. towing astern
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel hearing a fog signal forward of her beam shall reduce speed to _______.
A. moderate speed
B. safe speed
C. half speed
D. the minimum where the vessel can be kept on course |
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Definition
D. the minimum where the vessel can be kept on course
Answer: D, Rule 19.e. Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close quarters situation with another vessel forward of her beam, shall reduce her speed to the minimum which she can be kept on course. She shall, if necessary, take all her way off and, in any event, navigate with extreme caution until the danger of collision is over. |
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Term
BOTH INTERNATIONAL & INLAND: Two vessels are in an overtaking situation. Which of the following lights on the overtaken vessel shall be visible to the vessel overtaking?
A. two masthead lights and a sternlight
B. one masthead light, sidelights and a sternlight
C. sidelights only
D. sternlight only |
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Definition
D. sternlight only
Answer: D, Rule 13.b. A vessel shall be deemed to be overtaking when coming up with another vessel from a direction more than 22.5 degrees abaft her beam; that is, in such a position with reference to the vessel she is overtaking, that at night she would be able to see only the sternlight of that vessel but neither of her sidelights. |
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Term
BOTH INTERNATIONAL & INLAND: While underway and making way your vessel enters fog. What fog signal should you sound every two minutes?
A. one prolonged blast
B. two prolonged blasts
C. three short blasts
D. a prolonged blast and three short blasts |
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Definition
A. one prolonged blast
Answer: A, Rule 35.a In or near an area of restricted visibility, whether by day or night, a power driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast. |
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Term
BOTH INTERNATIONAL & INLAND: On open water, a vessel fishing is in a crossing situation with a vessel sailing on the fishing vessel's starboard side. Which vessel is the stand-on vessel?
A. The fishing vessel because it is to port of the sailing vessel
B. The fishing vessel because it is fishing
C. the Sailing vessel because it is to starboard of the fishing vessel
D. the sailing vessel because it is sailing |
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Definition
B. The fishing vessel because it is fishing
Answer: B. Rule 18.b. A sailing vessel underway shall keep out of the way of a vessel not under command, restricted in her ability to maneuver, and engaged in fishing. |
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Term
BOTH INTERNATIONAL & INLAND: The lights prescribed by the rules shall be exhibited ____
A. from sunrise to sunset in restricted visibility
B. at all times
C. only from sunset to sunrise
D. whenever a lookout is posted |
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Definition
A. from sunrise to sunset in restricted visibility
Answer: A, Rule 20.c. The lights prescribed by these rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary. |
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Term
BOTH INTERNATIONAL & INLAND: Risk of collision may exist ______________.
A. if the compass bearing of an approaching vsl does not appreciably change
B. even when an appreciable bearing change is evident, particularly when approaching a vessel at close range
C. If you observe both sidelights of a vessel ahead for an extended period of time
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 7.d. Risk of collision shall be deemed to exist if the compass bearing of an approaching vessel does not appreciably change, and such risk may sometimes exist even when an appreciable bearing change is evident, particularly when approaching a very large vessel or a tow, or when approaching a vessel at very close range. |
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Term
BOTH INTERNATIONAL & INLAND: "Safe speed" is defined as that speed where _______.
A. you can stop within your visibility range
B. you can take proper and effective action to avoid collision
C. you are travelling slower than surrounding vessels
D. no wake comes from your vessel |
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Definition
B. you can take proper and effective action to avoid collision
Answer: B, Rule 6 Every vessel shall at all times proceed at a safe speed so that she can take proper and effective action to avoid collision and be stopped within a distance appropriate to the prevailing circumstances and conditions. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel showing a green light over a white light in a vertical line above the level fo the sidelights is ____.
A. engaged in underwater construction
B. under sail and power
C. a pilot vessel
D. trawling |
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Definition
D. trawling
Answer: D, Rule 26.b.i. A vessel when engaged in trawling shall exhibit at the mast an all-round green over an all-round white light (or a shape consisting of two cones with their apexes together), a masthead light abaft of and higher than the all-round green light (a vessel of less than 50 meters may not show this light), and when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel or object being towed at night must show ____.
A. a white all-round light
B. sidelights and a sternlight
C. a flashing yellow light
D. forward and after masthead lights |
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Definition
B. sidelights and a sternlight
Answer: B, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: To determine if risk of collision exists, a vessel must use ________.
A. radar scanning
B. radar plotting
C. compass bearing
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 7.b Proper use shall be made of radar equipment if fitted and operational, including long-range scanning to obtain early warning of risk of collision and radar plotting or equivalent systematic observation of detected objects.. |
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Term
BOTH INTERNATIONAL & INLAND: If a vessel is engaged in fishing, according to the definitions in the Rules, it will have ___________
A. gear extending from the side or stern
B. Gear that restricts maneuverability
C. Less than 50 percent trolling lines
D. None of the above |
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Definition
B. Gear that restricts maneuverability
Answer: B, Rule 3.d. The term "vessel engaged in fishing" means any vessel fishing with nets, lines, trawls, or other fishing apparatus which restricts maneuverability, but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict maneuverability |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog you hear the rapid ringing of a bell. What does this signal indicate?
A. A vessel backing down
B. A sailboat underway
C. A vessel at anchor
D. A vessel drifting |
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Definition
C. A vessel at anchor
Answer: C, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Two power-driven vessels are crossing so as to involve risk of collision. Which statement is true, according to the rules?
A. The vessel which has the other on her own port side shall keep out of the way
B. If the stand-on vessel takes action, she shall avoid changing course to port
C. If the give-way vessel takes action, she shall avoid changing course to starboard
D. The give-way vessel should keep the other vessel to her starboard |
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Definition
B. If the stand-on vessel takes action, she shall avoid changing course to port
Answer: B. Rule 17.c. A power-driven vessel which takes action in a crossing situation shall, if the circumstances of the case admit, not alter course to port for a vessel on her own port side. |
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Term
BOTH INTERNATIONAL & INLAND: What is the minimum vessel length which must show two white masthead lights when underway at night?
A. 7 meters
B. 20 meters
C. 50 meters
D. 100 meters |
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Definition
C. 50 meters
Answer: C, Rule 23.a. A power driven vessel underway shall exhibit a masthead light forward, a second masthead light abaft and higher this light ( A vessel less than 50 meters may not exhibit this light), sidelights, and a sternlight |
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Term
BOTH INTERNATIONAL & INLAND: In a crossing situation, the vessel that is to keep out of the way of another vessel must take positive action early to comply with this obligation and shall _________.
A. avoid crossing ahead of the other vessel
B. avoid passing astern of the other vessel
C. sound one prolonged blast to indicate compliance
D. alter course to port for a vessel on her port side |
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Definition
A. avoid crossing ahead of the other vessel
Answer: A, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: At night, a power-driven vessel less than 12 meters in length may, instead of the normal running lights, show sidelights and one ____.
A. white light
B. yellow light
C. flashing white light
D. flashing yellow light |
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Definition
A. white light
Answer: A Rule 23.c A power driven vessel of less than 12 meters in length may, instead of standard running lights, exhibit an all-round white light and sidelights |
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Term
BOTH INTERNATIONAL & INLAND: You are crossing a narrow channel in an 18 meter tug when you sight a loaded tankship off our port bow coming up the channel. Which statement is correct?
a. Neither vessel has the right of way because the tankship is crossing
B. you cannot impede the safe passage of the tankship
C. the tankship has the right of way because it is in the channel
D. the tankship has the right of way because it is the larger of the two vessels |
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Definition
B. you cannot impede the safe passage of the tankship
Answer: B, , Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel engaged in fishing underway sounds the same fog signal as a ____________.
A. A power-driven vessel stopped and making no way through the water
B. Vessel being towed
C. vessel restricted in her ability to maneuver at anchor
D. sailing vessel at anchor |
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Definition
C. vessel restricted in her ability to maneuver at anchor
Answer: C, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel 15 meters in length which is proceeding under sail as well as being propelled by machinery shall exhibit during the daytime __________.
A. one black ball
B. a basket
C. a cone with its apex downward
D. two cones with their apexes together |
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Definition
C. a cone with its apex downward
Answer: C, Rule 25.e. A vessel proceeding under sail when also being propelled by machinery shall exhibit forward where it can best be seen a conical shape, apex downwards. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following should not impede the navigation of a power-driven vessel?
A. A vessel not under command
B. A vessel engaged in fishing
C. A sailing vessel
D. A seaplane |
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Definition
D. A seaplane
Answer: D, Rule 18.e (Int) and Rule 18.d (Inland) A seaplane on the water shall, in general, keep well clear of all vessels and avoid impeding their navigation. |
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Term
BOTH INTERNATIONAL & INLAND: Your vessel is underway but stopped and making no way through the water when fog sets in. What fog signal would you sound?
A. One prolonged blast on the whistle
B. One prolonged blast and two short blasts on the whistle
C. Two prolonged blasts on the whistle
D. one short, one prolonged, and one short blast on the whistle |
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Definition
C. Two prolonged blasts on the whistle
Answer: C, Rule 35.b A power driven vessel underway, but stopped and making no way through the water, shall sound at intervals of not more than 2 minutes, 2 prolonged blasts in succession with an interval of about 2 seconds between them. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel being towed alongside shall show ________.
A. one all-round white light
B. sidelights and a sternlight
C. only the outboard sidelight and a sternlight
D. a masthead light, sidelights, and a sternlight |
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Definition
B. sidelights and a sternlight
Answer: B, Rule 24.f. Vessels being towed alongside or pushed in a group shall be lighted as one vessel. A vessel being pushed ahead, not part of a composite unit, shall exhibit sidelights. A vessel being towed alongside shall exhibit sidelights and a sternlight. Inland rules require a special flashing light on the bow. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel underway and fishing shall keep out of the way of a _________.
A. power-driven vessel underway
B. vessel not under command
C. vessel sailing
D. vessel engaged on pilotage duty |
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Definition
B. vessel not under command
Answer: B, Rule 18.c. A vessel engaged in fishing when underway shall, so far as possible, keep out of the way of a vessel not under command and a vessel restricted in her ability to maneuver. |
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Term
BOTH INTERNATIONAL & INLAND: The whistle signal for a vessel operating astern propulsion is ______.
A. one long blast
B. one prolonged blast
C. three short blasts
D. four or more short blasts |
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Definition
C. three short blasts
Answer: C, , Rule 34.a Three short blasts mean "I am operating astern propulsion" |
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Term
BOTH INTERNATIONAL & INLAND: A vessel restricted in her ability to maneuver which is at anchor must show at night which of the following lights?
A. three all-round red-white-red lights in a vertical line and anchor lights
B. three all-round red-white-red lights in a vertical line only
C. Anchor lights only
D. Anchor lights and sidelights only |
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Definition
A. three all-round red-white-red lights in a vertical line and anchor lights
Answer: A, , Rule 27.b. A vessel restricted in her ability to maneuver (except a vessel engaged in mineclearance ops) shall exhibit where they can best be seen an all-round red over white over red light, or shapes of ball over diamond over ball. When making way through the water she shall show masthead lights, sidelights and a sternlight. When at anchor, in addition to the red over white over red, appropriate anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following would NOT be a distress signal?
A. "Mayday" sent by radiotelephone
B. continuous sounding of fog horn
C. Green star shells fired from a launcher
D. square flag and ball in a vertical line |
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Definition
C. Green star shells fired from a launcher
Answer: C, Annex iv, 87.1. |
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Term
BOTH INTERNATIONAL & INLAND: In a dense fog you hear a whistle signal ahead of one prolonged blast followed by three short blasts. This signal indicates a ____.
A. fishing vessel underway trawling
B. manned vessel being towed
C. pilot vessel underway making a special signal
D. vessel not under command |
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Definition
B. manned vessel being towed
Answer: B, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: If a towing vessel and her tow are severely restricted in their ability to deviate from their course, they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is ________.
A. pushed ahead
B. towed alongside
C. towed astern
D. any of the above |
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Definition
D. any of the above
Answer: D, Rule 27.c. A vessel engaged in a towing operation which severely restricts the towing vessel and her tow in their ability to deviate from their course shall show both the lights (and shapes) for towing and the lights(and shapes) for restricted in her ability to maneuver. |
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Term
BOTH INTERNATIONAL & INLAND: At night, which lights would indicate to you that a vessel is fishing?
A. two red lights, one over the other
B. a green light, over a red light
C. red light over a white light
D. A white light over a red light |
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Definition
C. red light over a white light
Answer: C, Rule 26.c. A vessel engaged in fishing, other than trawling, shall exhibit an all-round red over white in a vertical line, or a shape consisting of two cones with apexes together in a vertical line. When there is outlying gear extending more than 15 meters from the vessel, an all-round white light, or a cone apex upwards, in the direction of the gear. Additionally, when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A head on situation at night would be one in which you see _______.
A. one sidelight of a vessel ahead of you
B. one sidelight and a masthead light of a vessel ahead of you
C. one sidelight, a masthead light and a range light of a vessel ahead of you
D. both sidelights of a vessel ahead of you |
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Definition
D. both sidelights of a vessel ahead of you
Answer: D, Rule 14.b. A head on situation shall be deemed to exist when a vessel sees the other ahead or nearly ahead and by night she could see the masthead lights of the other in a line or nearly in a line or both sidelights and by day she observes the corresponding aspect of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: You are the stand on vessel in a crossing situation. If the give way vessel is not taking sufficient action to avoid collision, and you are in doubt, you should sound _______.
A. one short blast and maintain course
B. one short blast and backdown
C. no signal and maneuver at will
D. the danger signal |
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Definition
D. the danger signal
Answer: D, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: A lantern combining the two sidelights of a vessel's running lights may be shown on a ______.
A. 10-meter sailing vessel
B. 20-meter vessel engaged in fishing and making way
C. 25-meter power-driven vessel engaged in trolling
D. 25-meter pilot vessel |
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Definition
A. 10-meter sailing vessel
Answer: A, Rule 25.b. A sailing vessel of less than 20 meters in length may combine into one lantern her sidelights and sternlight to be carried near the top of the mast where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel aground would show the same dayshape as a _____.
A. vessel towing a submerged object
B. dredge underway and dredging
C. hydrographic survey vessel at anchor and surveying
D. none of the above |
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Definition
D. none of the above
Answer: D, Rule 30.d. A vessel aground shall exhibit, along with the appropriate anchor lights, two all-round red lights in a vertical line, and three balls in a vertical line. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in a fog when you hear a signal of three strokes of a bell, a rapid ringing of the bell, and three more strokes of the bell. This signal indicates a vessel ______.
A. at anchor, giving warning
B. aground
C. at anchor, greater than 100 meters
D. Not under command at anchor |
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Definition
B. aground
Answer: B, Rule 35.h (Int) or Rule 35.g (Inland). A vessel aground shall give the bell signal and if required the gong signal prescribed for a vessel at anchor, and shall in addition give three separate and distinct strokes on the bell immediately before and after the rapid ringing of the bell. A vessel aground may in addition sound an appropriate whistle signal. . |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel "not under command" at night must show her sidelights when ______.
A. making headway
B. making no headway
C. moored to a buoy
D. at anchor |
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Definition
A. making headway
Answer: A, Rule 27.a. A vessel not under command shall exhibit two all round red lights in a vertical line where they can best be seen, two balls in a vertical line where they can best be seen, and when making way through the water sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: The term prolonged blast means a blast of from _______.
A. 2 to 4 seconds
B. 4 to 6 seconds
C. 6 to 8 seconds
D. 8 to 10 seconds |
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Definition
B. 4 to 6 seconds
Answer: B, Rule 32.c. The term "prolonged blast" means a blast of from 4 to 6 seconds duration. |
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Term
BOTH INTERNATIONAL & INLAND: While you are underway, navigation lights must be displayed on your vessel _____.
A. during all periods of reduced visibility
B. at all times
C. at night only when other vessels may be in the area
D. at night only when vessels are detected on radar |
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Definition
A. during all periods of reduced visibility
Answer: A, Rule 20.c. The lights prescribed by these rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning risk of collision?
A. The stand-on vessel must keep out of the way of the other vessel when risk of collision exists.
B. Risk of collision always exists when two vessels pass within one mile of each other.
C. Risk of collision always exists when the compass bearing of an approaching vessel changes appreciably
D. Risk of collision may exist when the compass bearing of an approaching vessel is changing appreciably |
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Definition
D. Risk of collision may exist when the compass bearing of an approaching vessel is changing appreciably
Answer: D, Rule 7.d. Risk of collision shall be deemed to exist if the compass bearing of an approaching vessel does not appreciably change, and such risk may sometimes exist even when an appreciable bearing change is evident, particularly when approaching a very large vessel or a tow, or when approaching a vessel at very close range. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel nearing a bend where other vessels may be obscured shall sound _____.
A. one short blast
B. one long blast
C. two short blasts
D. one prolonged blast |
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Definition
D. one prolonged blast
Answer: D, Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel that is defined as "restricted in her ability to maneuver" is unable to keep out of the way of another vessel due to ______.
A. her draft
B. the nature of her work
C. some exceptional circumstance
D. a danger of navigation |
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Definition
B. the nature of her work
Answer: B, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog, you hear a vessel sound four short blasts in succession. What does this signal indicate?
A. A pilot vessel
B. A vessel being towed
C. A vessel fishing
D. A sailboat |
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Definition
A. A pilot vessel
Answer: A, Rule 35.j (Int) or 35.i. (Inland) A pilot vessel when engaged on pilotage duty may, in addition to the sound signals for a power driven vessel underway making way, underway not making way, or at anchor, may sound an identity signal consisting of four short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: You are in charge of a stand-on vessel in a crossing situation. The other vessel is 1.5 miles to port. You have determined that risk of collision exists. You should ________.
A. take avoid action immediately upon determining that risk of collision exists
B. immediately sound the danger signal
C. take avoiding action only after providing the give way vessel time to take action, and determining that her action is not appropriate
D. hold course and speed until the point of extremis, and then sound the danger signal, taking whatever action will best avert collision |
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Definition
C. take avoiding action only after providing the give way vessel time to take action, and determining that her action is not appropriate
Answer: C, Rule 17.a.ii Where one of two vessels is to keep out of the way of another, the other shall keep her course and speed. The latter vessel may, however, take action to avoid collision by her maneuver alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: To be considered "engaged in fishing" according to the Rules of the Road, a vessel must be _____.
A. using fishing apparatus which restricts maneuverability.
B. using trolling lines
C. power-driven
D. showing lights or shapes for a vessel |
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Definition
A. using fishing apparatus which restricts maneuverability.
Answer: A, Rule 3.d. The term "vessel engaged in fishing" means any vessel fishing with nets, lines, trawls, or other fishing apparatus which restricts maneuverability, but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict maneuverability |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog you hear a rapid ringing of a bell ahead. This bell indicates a _____.
A. vessel at anchor
B. vessel in distress
C. sailboat underway
D. vessel backing out of a berth |
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Definition
A. vessel at anchor
Answer: A, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: An overtaking situation would be on in which one vessel is approaching another from more than how many degrees abaft the beam?
A. 0 degrees
B. 10 degrees
C. 22.5 degrees
D. None of the above |
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Definition
C. 22.5 degrees
Answer: C, Rule 13.b. A vessel shall be deemed to be overtaking when coming up with another vessel from a direction more than 22.5 degrees abaft her beam; that is, in such a position with reference to the vessel she is overtaking, that at night she would be able to see only the sternlight of that vessel but neither of her sidelights. |
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Term
BOTH INTERNATIONAL & INLAND: A stand-on vessel is ______.
A. required to give way in a crossing situation
B. required to sound the first passing signal in a meeting situation
C. free to maneuver in any crossing or meeting situation as it has the right of way
D. required to maintain course and speed in a crossing situation |
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Definition
D. required to maintain course and speed in a crossing situation
Answer: D, Rule 17.a.i. says where one of two vessels is to keep out of the way, the other shall keep her course and speed. |
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Term
BOTH INTERNATIONAL & INLAND: An overtaking situation at night would be one which one vessel sees which of the following lights of a vessel ahead?
A. Masthead lights and sidelights
B. sidelights and sternlight
C. sidelights only
D. sternlight only |
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Definition
D. sternlight only
Answer: D, Rule 13.b. A vessel shall be deemed to be overtaking when coming up with another vessel from a direction more than 22.5 degrees abaft her beam; that is, in such a position with reference to the vessel she is overtaking, that at night she would be able to see only the sternlight of that vessel but neither of her sidelights. |
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Term
BOTH INTERNATIONAL & INLAND: What lights must sailboats show when underway at night
A. one all-round white light
B. a stern light
C. red and green side lights
D. red and green side lights and a stern light |
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Definition
D. red and green side lights and a stern light
Answer: D, Rule 25.a. A sailing vessel underway shall exhibit sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: You are crossing a narrow channel in a small motorboat when you sight a tankship off your port bow coming up the channel. Which statement is correct?
A. your is the give way vessel because you are crossing the channel
B. you cannot impede the safe passage of the tankship
C. The tankship has the right of way because it is to port of your vessel
D. the tankship has the right of way because it is the larger of the two vessels |
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Definition
B. you cannot impede the safe passage of the tankship
Answer: B, , Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel does NOT sound a fog signal of one prolonged followed by two short blasts?
A. a vessel dredging
B. a vessel being towed
C. a vessel engaged in fishing
D. a sailing vessel |
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Definition
B. a vessel being towed
Answer: B, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which lights shall a 200 meter vessel exhibit when at anchor?
A. in the forepart of the vessel, a 225 white light
B. In the after part of the vessel, a 135 white light
C. Any available working lights to illuminate the decks
D. in the fore part of the vessel, a 135 white light |
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Definition
C. Any available working lights to illuminate the decks
Answer: C, Rule 30.c. A vessel at anchor may, and a vessel of 100 meters or more in length shall, also use the available working or equivalent lights to illuminate her decks. |
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Term
BOTH INTERNATIONAL & INLAND: A partly submerged vessel or object being towed, which is not readily noticeable, shall show ____.
A. yellow lights at each end
B. two red lights in a vertical line
C. a black ball
D. a diamond shape |
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Definition
D. a diamond shape
Answer: D, Rule 24.g. An inconspicuous, partly submerged vessel or object being towed shall exhibit one all-round white light at or near each end if it is less than 25 meters in breadth, four all-round white lights to mark its length and breadth if it is 25 meters or more in breadth, and if it exceeds 100 meters in length, additional all-round white lights between these lights so that the distance between the lights shall not exceed 100 meters. Additionally, a diamond shape at or near the aftermost extremity of the last vessel or object being towed. The towing vessel may also direct a searchlight in the direction of the tow to indicate its presence to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Concerning the identification signal for a pilot vessel, in fog, which statement is true?
A. When at anchor, the pilot vessel is only required to sound anchor signals
B. The identification signal must be sounded any time the pilot vessel is underway
C. The pilot vessel may only sound the identity signal when making way
D. all of the above |
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Definition
A. When at anchor, the pilot vessel is only required to sound anchor signals
Answer: A, Rule 35.i. (Int) or Rule 35.h (Inland) A vessel of less than 12 meters in length shall not be obliged to give the above mentioned signals but, if she does not, shall make some other efficient sound signal at intervals of not more than 2 minutes. |
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Term
BOTH INTERNATIONAL & INLAND: In a crossing situation, a vessel fishing must keep out of the way of a vessel which is ___.
A. under sail
B. towing
C. restricted in her ability to maneuver
D. engaged in pilot duty |
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Definition
C. restricted in her ability to maneuver
Answer: C, Rule 18.c. A vessel engaged in fishing when underway shall, so far as possible, keep out of the way of a vessel not under command and a vessel restricted in her ability to maneuver. |
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Term
BOTH INTERNATIONAL & INLAND: When action to avoid a close quarters situation is taken, a course change alone may be the most effective action provided that _______.
A. it is done in a succession of small course changes
B. it is not done too early
C. it is a large course change
D. the course change is to starboard |
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Definition
C. it is a large course change
Answer: C, Rule 8.c. If there is sufficient sea room, alteration of course alone may be the most effective action to avoid a close-quarters situation provided that it is made in good time, is substantial and does not result in another close quarters situation. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in heavy fog and hear the fog signal of a vessel which is in an undetermined position ahead of your vessel. As far as circumstances permit, you must _______.
A. slow to moderate speed and then navigate with caution
B. maintain speed and sound the danger signal
C. slow to bare steerageway and then navigate with caution
D. Turn hard to starboard and maintain speed |
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Definition
C. slow to bare steerageway and then navigate with caution
Answer: C, Rule 19.e. Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close quarters situation with another vessel forward of her beam, shall reduce her speed to the minimum which she can be kept on course. She shall, if necessary, take all her way off and, in any event, navigate with extreme caution until the danger of collision is over. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel at anchor will show a _____
A. Ball
B. Cone
C. cylinder
D. double cone, apexes together |
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Definition
A. Ball
Answer: A, Rule 30.a. A vessel at anchor shall exhibit where it can best be seen one all-round white light or one ball in the forepart, and at or near the stern at another light at a lower level than the bow light |
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Term
BOTH INTERNATIONAL & INLAND: What dayshape must be shown by a vessel fishing which has gear extending more than 150 meters horizontally outward from it?
A. one black ball
B. one diamond shape
C. one cone with its apex upwards
D. one basket |
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Definition
C. one cone with its apex upwards
Answer: C, Rule 26.c. A vessel engaged in fishing, other than trawling, shall exhibit an all-round red over white in a vertical line, or a shape consisting of two cones with apexes together in a vertical line. When there is outlying gear extending more than 15 meters from the vessel, an all-round white light, or a cone apex upwards, in the direction of the gear. Additionally, when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel in a towing operation which severely restricts the towing vessel and her tow in their ability to change course shall, when making way, exhibit ________.
A. the lights for a towing vessel
B. the lights for a vessel restricted in its ability to maneuver
C. sidelights and sternlight
D. All of the above |
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Definition
D. All of the above
Answer: D, Rule 27.c. A vessel engaged in a towing operation which severely restricts the towing vessel and her tow in their ability to deviate from their course shall show both the lights (and shapes) for towing and the lights(and shapes) for restricted in her ability to maneuver.. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel underway but not making way and fishing other than trawling would show which of the following lights?
A. a white light over a red light
B. a red light over a white light
C. a white light over a red light, sidelights and a sternlight
D. A red light over a white light, sidelights and a sternlight |
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Definition
B. a red light over a white light
Answer: B, Rule 26.c. A vessel engaged in fishing, other than trawling, shall exhibit an all-round red over white in a vertical line, or a shape consisting of two cones with apexes together in a vertical line. When there is outlying gear extending more than 15 meters from the vessel, an all-round white light, or a cone apex upwards, in the direction of the gear. Additionally, when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A 200-meter vessel is aground in restricted visibility. Which signal is optional?
A. A bell signal
B. A gong signal
C. A whistle signal
D. all of the above |
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Definition
C. A whistle signal
Answer: C, Rule 35.h (Int) or Rule 35.g (Inland). A vessel aground shall give the bell signal and if required the gong signal prescribed for a vessel at anchor, and shall in addition give three separate and distinct strokes on the bell immediately before and after the rapid ringing of the bell. A vessel aground may in addition sound an appropriate whistle signal. . |
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Term
BOTH INTERNATIONAL & INLAND: A vessel or object being towed shall display a(n) ______________.
A. forward masthead light
B. after masthead light
C. sternlight
D. all of the above |
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Definition
C. sternlight
Answer: C, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: The rules state that vessels may depart from the requirements of the rules when ____.
A. there are no other vessels around
B. operating in a narrow channel
C. the master enters it in the ship's log
D. necessary to avoid immediate danger |
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Definition
D. necessary to avoid immediate danger
Answer: D, Rule 17.b. When from any cause, the vessel required to keep her course and speed finds herself so close that collision cannot be avoided by the action of the give-way vessel alone, she shall take such action as will best aid to avoid collision. |
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Term
BOTH INTERNATIONAL & INLAND: For the purpose of the rules, except where otherwise required, the term ___________.
A. "vessel" includes seaplanes
B. "Seaplane" includes nondisplacement craft
C "Vessel engaged in fishing" includes a vessel fishing with trolling lines
D. "Vessel restricted in her ability to maneuver" includes fishing vessels |
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Definition
A. "vessel" includes seaplanes
Answer: A, Rule 3.a. The word vessels includes every description of water craft, including nondisplacement craft and seaplanes, used or capable of being used as a means of transportation on water. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning a 75-meter power-driven vessel underway at night?
A. She must exhibit an all-round white light at the stern
B. She must exhibit forward and after masthead lights
C. She must exhibit only a forward masthead light
D. She may exhibit a red light over a green light forward |
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Definition
B. She must exhibit forward and after masthead lights
Answer: B, Rule 23.a. A power driven vessel underway shall exhibit a masthead light forward, a second masthead light abaft and higher this light ( A vessel less than 50 meters may not exhibit this light), sidelights, and a sternlight |
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Term
BOTH INTERNATIONAL & INLAND: Every vessel which is directed by these rules to keep out of the way of other vessel shall, if the circumstances of the case admit, avoid _______.
A. crossing ahead of the other
B. crossing astern of the other
C. passing port to port
D. passing starboard to starboard |
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Definition
A. crossing ahead of the other
Answer: A, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is the danger signal?
A. a continuous sounding of the fog horn
B. firing a yellow flag
C. five or more short rapid blasts on the whistle
D. one long blast on the whistle. |
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Definition
C. five or more short rapid blasts on the whistle
Answer: C, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemented by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: Navigation lights must be displayed in all weathers from sunset to sunrise. They ______.
A. must be displayed when day signals are being used
B. must be displayed when moored to a pier
C. may be extinguished at night on open waters when no other vessels are in the area
D. may be displayed during daylight |
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Definition
D. may be displayed during daylight
Answer: D, Rule 20.c. The lights prescribed by these rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following would describe a head-on situation?
A. seeing one red light of a vessel directly ahead
B. seeing two forward white towing identification lights in a vertical line on a towing vessel directly ahead
C. seeing both sidelights of a vessel directly off your starboard beam
D. seeing both sidelights of a vessel directly ahead |
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Definition
D. seeing both sidelights of a vessel directly ahead
Answer: D, Rule 14.b. A head on situation shall be deemed to exist when a vessel sees the other ahead or nearly ahead and by night she could see the masthead lights of the other in a line or nearly in a line or both sidelights and by day she observes the corresponding aspect of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: When two vessels are in immediate danger of collision, the stand-on vessel must _______.
A. abandon ship
B. assist in taking whatever action is necessary to avoid collision
C. hold course and speed
D. sound a distress signal |
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Definition
B. assist in taking whatever action is necessary to avoid collision
Answer: B, Rule 17.b. When from any cause, the vessel required to keep her course and speed finds herself so close that collision cannot be avoided by the action of the give-way vessel alone, she shall take such action as will best aid to avoid collision. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel 25 meters in length is required to have onboard which of the following sound signaling appliances?
A. none is required
B. whistle only
C. whistle and bell only
D. whistle, bell and gong |
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Definition
C. whistle and bell only
Answer: C, Rule 33.a. A vessel of 12 meters or more in length shall be provided with a whistle and a bell. A vessel of 100 meters or more in length shall, in addition, be provided with a gong. The bell and/or gong may be replaced by other equipment having the same respective sound characteristics, but manual sounding of the signals shall always be possible. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel transferring provisions or cargo at sea shall display during the day ____.
A. two black balls in a vertical line
B. three black balls in a vertical line
C. three shapes in a vertical line, the highest and lowest shall be red balls and the middle a white diamond
D. Three black shapes in a vertical line, the highest and lowest shall be balls and the middle a diamond |
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Definition
D. Three black shapes in a vertical line, the highest and lowest shall be balls and the middle a diamond
Answer: D, , Rule 27.b. A vessel restricted in her ability to maneuver (except a vessel engaged in mineclearance ops) shall exhibit where they can best be seen an all-round red over white over red light, or shapes of ball over diamond over ball. When making way through the water she shall show masthead lights, sidelights and a sternlight. When at anchor, in addition to the red over white over red, appropriate anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: You see a red sidelight bearing NW (315*). That vessel may be heading ______.
A. south (180)
B. east (090)
C. northeast (045)
D. west (270) |
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Definition
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Term
BOTH INTERNATIONAL & INLAND: The duration of each blast of whistle signals used by a power-driven vessel in fog whether making way or underway but making no way is ___________.
A. about 1 second
B. 2 to 4 seconds
C. 4 to 6 seconds
D. 8 to 10 seconds |
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Definition
C. 4 to 6 seconds
Answer: C, Rule 32.c. The term "prolonged blast" means a blast of from 4 to 6 seconds duration. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning a "vessel engaged in fishing"?
A. the vessel may be using nets, lines, or trawls.
B. the vessel may be trolling
C. The vessel is classified as "restricted in her ability to maneuver"
D. It sounds the same fog signal as a vessel underway but stopped. |
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Definition
A. the vessel may be using nets, lines, or trawls.
Answer: A, Rule 3.d. The term "vessel engaged in fishing" means any vessel fishing with nets, lines, trawls, or other fishing apparatus which restricts maneuverability, but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict maneuverability |
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Term
BOTH INTERNATIONAL & INLAND: The rules state that risk of collision shall be deemed to exist _____.
A. whenever two vessels approach from opposite directions
B. if the bearing of an approaching vessel does not appreciably change
C. whenever a vessel crosses ahead of the intended track of another vessel
D. if one vessel approaches another so as to be overtaking |
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Definition
B. if the bearing of an approaching vessel does not appreciably change
Answer: B, Rule 7.d. Risk of collision shall be deemed to exist if the compass bearing of an approaching vessel does not appreciably change, and such risk may sometimes exist even when an appreciable bearing change is evident, particularly when approaching a very large vessel or a tow, or when approaching a vessel at very close range. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel exhibits the same lights as a ____.
A. vessel towing, when not underway
B. vessel towing astern
C. sailing vessel
D. pushing vessel and a vessel being pushed, when they are in a composite unit |
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Definition
D. pushing vessel and a vessel being pushed, when they are in a composite unit
Answer: D, Rule 24.b. When a pushing vessel and a vessel being pushed ahead are rigidly connected in a composite unit they shall be regarded as a power driven vessel and exhibit the lights of a single vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Your vessel is underway in fog but stopped and making no way through the water. What fog signal should you sound?
A. one prolonged blast at one minute intervals
B. Two prolonged blasts at one minute intervals
C. One prolonged blast at two minute intervals
D. Two prolonged blasts at two minute intervals |
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Definition
D. Two prolonged blasts at two minute intervals
Answer: D, Rule 35.b A power driven vessel underway, but stopped and making no way through the water, shall sound at intervals of not more than 2 minutes, 2 prolonged blasts in succession with an interval of about 2 seconds between them. |
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Term
BOTH INTERNATIONAL & INLAND: A towing light, according to the Rules, is a _____.
A. white light
B. red light
C. Yellow light
D. blue light |
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Definition
C. Yellow light
Answer: C, Rule 21.d. "Towing light" means a yellow light having the same characteristics as the sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: What signal shall a power-driven vessel sound when making way in fog?
A. one short blast every two minutes
B. one prolonged blast every two minutes
C. one prolonged and two short blasts every tow minutes
D. three short blasts every two minutes |
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Definition
B. one prolonged blast every two minutes
Answer: B, Rule 35.a In or near an area of restricted visibility, whether by day or night, a power driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast. |
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Term
BOTH INTERNATIONAL & INLAND: Two vessels are meeting head to head. How must the vessels pass?
A. one vessel must alter course while the other must continue on its course
B. the vessels should determine which will alter course by sounding whistle signals
C. both vessels should alter course to port and pass starboard to starboard
D. both vessels should alter course to starboard and pass port to port |
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Definition
D. both vessels should alter course to starboard and pass port to port
Answer: D, Rule 14.a. Unless otherwise agreed, when two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision, each shall alter her course to starboard so that each shall pass on the port side of the other. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel does NOT sound a fog signal of one prolonged followed by two short blasts?
A. a vessel engaged in dredging
B. a sailing vessel
C. a vessel being towed
D. a vessel engaged in fishing |
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Definition
C. a vessel being towed
Answer: C, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel 50 meters in length and at anchor is required to sound which of the following fog signals?
A. 5-second ringing of bell every minute
B. 5 second ringing of bell every 2 minutes
C. 5 second ringing of a gong every minute
D. 5 second ringing of both a bell and gong every 2 minutes |
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Definition
A. 5-second ringing of bell every minute
Answer: A, Rule 35.a In or near an area of restricted visibility, whether by day or night, a power driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is NOT to be regarded as "restricted in her ability to maneuver?"
A. A vessel transferring provisions while underway
B. a pushing vessel and a vessel being pushed when connected in a composite unit
C. A vessel servicing a navigation mark
D. a vessel launching aircraft |
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Definition
B. a pushing vessel and a vessel being pushed when connected in a composite unit
Answer: B, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement correctly applies to a situation where a sailing vessel is overtaking a power-driven vessel?
A. the power-driven vessel must keep out of the way of the sailing vessel
B. the special circumstance situation exists
C. the sailing vessel must keep out of the way of the power-driven vessel
D. The vessel which has the other vessel to the right must keep out of the way |
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Definition
C. the sailing vessel must keep out of the way of the power-driven vessel
Answer: C, Rule 13.a. Any vessel overtaking any other shall keep out of the way of the vessel being overtaken. |
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Term
BOTH INTERNATIONAL & INLAND: Which procedure(s) shall be used to determine risk of collision?
A. watching the compass bearing of an approaching vessel
B. systematic observation of objects detected by radar
C. long-range radar scanning
D. All of the above |
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Definition
D. All of the above
Answer: D, Rule 7.b Proper use shall be made of radar equipment if fitted and operational, including long-range scanning to obtain early warning of risk of collision and radar plotting or equivalent systematic observation of detected objects.. |
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Term
BOTH INTERNATIONAL & INLAND: As defined in the Nav Rules, a white masthead light shows through an arc of how many degrees?
A. 90
B. 112.5
C. 225
D. 360 |
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Definition
C. 225
Answer: C, Rule 21.a "Masthead light" means a white light placed over the fore and aft centerline of the vessel showing an unbroken light over an arc of the horizon of 225 degrees, from 22.5 degrees abaft the beam on one side to 22.5 degrees abaft the beam on the other. |
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Term
BOTH INTERNATIONAL & INLAND: At anchor in fog, the fog signal of another vessel underway has been steadily growing louder and the danger of collision appears to exist. In addition to the required fog signal, what signal may be used to indicate the presence of your vessel?
A. The danger signal, five or more rapid blasts on the whistle
B. Three blasts on the whistle, one short, one prolonged, and one short
C. Three blasts on the whistle, one prolonged followed by two short
D. no other signal may be used |
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Definition
B. Three blasts on the whistle, one short, one prolonged, and one short
Answer: B, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Signals for vessels aground include _______.
A. by night, the anchor lights for a vessel of her length, and two red lights in a vertical line
B. A short, a prolonged, and a short blast
C. by day, three black balls in a vertical line
D. All of the above |
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Definition
D. All of the above
Answer: D, Rule 30.d. A vessel aground shall exhibit, along with the appropriate anchor lights, two all-round red lights in a vertical line, and three balls in a vertical line, Rule 35.h (Int) and Rule 35.g (Inland). A vessel aground shall give the bell signal and if required the gong signal as if they were anchored and shall, in addition, give three separate and distinct strokes on the bell immediately before and after the ringing of the bell. A vessel aground may in addition sound an appropriate whistle signal. |
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Term
BOTH INTERNATIONAL & INLAND: Which craft would be considered a "power-driven vessel" under the rules of the road?
A. an auxiliary sail vessel, using her engines
B. a canoe being propelled by a small outboard motor
C. a tug powered by a diesel engine
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 3.b. The term power driven vessel means any vessel propelled by machinery. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel less than 12 meters in length may, instead of the underway lights for vessels under 50 meters, at night, show which of the following?
A. sidelights and sternlight
B. one all-round white light and sidelights
C. masthead light only
D. sternlight only |
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Definition
B. one all-round white light and sidelights
Answer: B, Rule 23.c A power driven vessel of less than 12 meters in length may, instead of standard running lights, exhibit an all-round white light and sidelights |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel shall not impede the passage of a vessel which can only navigate inside a narrow channel?
A. a vessel of less than 20 meters in length
B. a vessel not under command
C. a vessel engaged in surveying
D. All of the above |
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Definition
A. a vessel of less than 20 meters in length
Answer: A, , Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true in an overtaking situation?
A. One vessel is approaching another vessel from more than 20 degrees abaft the beam
B. it is the duty of the vessel being overtaken to get out of the way
C. Any later change of bearing between the two vessels shall not make the overtaking vessel a crossing vessel
D. all of the above |
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Definition
C. Any later change of bearing between the two vessels shall not make the overtaking vessel a crossing vessel
Answer: C, Rule 13.d. After an overtaking situation, any subsequent alteration of the bearing between the two vessels shall not make the overtaking vessel a crossing vessel within the meaning of the rules, or relieve her of the duty of keeping clear of the overtaken vessel until she is finally past and clear. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel must exhibit a conical shape, apex downwards?
A. 10-meter vessel engaged in fishing
B. a 15-meter vessel proceeding under sail when also being propelled by machinery
C. a 20-meter vessel restricted in her ability to maneuver
D. All of the above |
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Definition
B. a 15-meter vessel proceeding under sail when also being propelled by machinery
Answer: B, Rule 25.e. A vessel proceeding under sail when also being propelled by machinery shall exhibit forward where it can best be seen a conical shape, apex downwards. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel must show a towing light above the sternlight?
A. a vessel pushing three barges ahead
B. a vessel towing alongside
C. A vessel with a 150-meter tow astern
D. none of the above |
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Definition
C. A vessel with a 150-meter tow astern
Answer: C, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: Which is not a distress signal?
A. a continuous sounding with any fog signal apparatus
B. A signal sent by radiotelephone consisting of the spoken word "mayday"
C. An international Code signal of N.C.
D. The firing of green star rockets or shell |
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Definition
D. The firing of green star rockets or shell
Answer: D, Annex iv, 87.1 |
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Term
BOTH INTERNATIONAL & INLAND: A rigid replica of the international Code flag "A" may be shown by a vessel ______.
A. pulling a submarine cable
B. engaged in diving operations
C. engaged in underway replenishment
D. transferring explosives |
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Definition
B. engaged in diving operations
Answer: B, Rule 27.e.ii. Whenever the size of a vessel engaged in diving operations makes it impracticable to exhibit all lights and shapes required for a vessel restricted in ability to maneuver, the vessel shall exhibit an all-round red over white over red, and a rigid replica of the international code flag "A". |
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Term
BOTH INTERNATIONAL & INLAND: In a crossing situation, which vessel may sound the danger signal?
A. give way
B. stand on
C. either vessel
D. neither vessel |
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Definition
C. either vessel
Answer: C, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: Every vessel should at all times proceed at a "safe speed". "Safe speed" is defined as that speed where ____.
A. you can stop within your visibility range
B. you can take proper and effective action to avoid collision
C. you are traveling slower than surrounding vessels
D. no wake comes from your vessel |
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Definition
B. you can take proper and effective action to avoid collision
Answer: B, Rule 6 Every vessel shall at all times proceed at a safe speed so that she can take proper and effective action to avoid collision and be stopped within a distance appropriate to the prevailing circumstances and conditions. . |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in fog and you hear three distinct bell strokes followed by five seconds of rapid bell ringing followed by three distinct bell strokes. This signal indicates a vessel __________.
A. aground
B. engaged in underwater construction
C. at anchor
D. in distress |
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Definition
A. aground
Answer: A, Rule 35.h (Int) and Rule 35.g (Inland). A vessel aground shall give the bell signal and if required the gong signal as if they were anchored and shall, in addition, give three separate and distinct strokes on the bell immediately before and after the ringing of the bell. A vessel aground may in addition sound an appropriate whistle signal. |
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Term
BOTH INTERNATIONAL & INLAND: In a crossing situation, a stand-on vessel which is forced to take action in order to avoid collision shall, if possible, avoid ______.
A. turning to port
B. turning to starboard
C. decreasing speed
D. increasing speed |
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Definition
A. turning to port
Answer: A, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. Rule 17.c.i. A power-driven vessel, if the circumstances of the case admit, not alter course to port for a vessel on her own port side. |
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Term
BOTH INTERNATIONAL & INLAND: Which is "underway" within the meaning of the rules?
A. a vessel at anchor with the engine turning
B. A vessel tied to an offshore mooring buoy
C. A vessel aground with the engine turning
D. a vessel drifting with the engine stopped |
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Definition
D. a vessel drifting with the engine stopped
Answer: D, Rule 3.i (int) or Rule 3.h (Inland). The word "underway" means that a vessel is not at anchor, or made fast to the shore, or aground. |
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Term
BOTH INTERNATIONAL & INLAND: What is the required fog signal for a manned vessel being towed at night?
A. one prolonged followed by one short blast
B. One prolonged followed by three short blasts
C. One prolonged followed by two short blasts
D. Two prolonged blasts |
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Definition
B. One prolonged followed by three short blasts
Answer: B, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: If you anchor your 25 meter vessel in a harbor, what light(s) must you show?
A. one all-round white light
B. Two all-round white lights
C. One all-round red light
D. All the deck house lights |
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Definition
A. one all-round white light
Answer: A, Rule 30.b. A vessel at anchor, of less than 50 meters, may exhibit an all-round white light where it can best be seen instead of the forward and aft anchor lights required for vessels 50 meters and over. |
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Term
BOTH INTERNATIONAL & INLAND: While navigating a power-driven vessel at night, you sight the red sidelight of another vessel on your port bow. It's after masthead light is to the right of the forward masthead light. You should ________.
A. hold course and speed
B. alter course to port
C. stop engines
D. sound the danger signal |
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Definition
A. hold course and speed
Answer: A, You se its port lights, it will pass port to port. |
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Term
BOTH INTERNATIONAL & INLAND: Three short blasts of the whistle means _____.
A. danger
B. I am in distress
C. my vessel is towing
D. I am operating astern propulsion |
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Definition
D. I am operating astern propulsion
Answer: D, , Rule 34.a Three short blasts mean "I am operating astern propulsion" |
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Term
BOTH INTERNATIONAL & INLAND: Of the vessels listed, which must keep out of the way of all the others?
A. a sailing vessel
B. vessel restricted in her ability to maneuver
C. vessel not under command
D. vessel fishing |
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Definition
A. a sailing vessel
Answer: a, Rule 18.b. A sailing vessel shall keep out of the way of a vessel not under command, restricted in her ability to maneuver, and a vessel engaged in fishing. |
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Term
BOTH INTERNATIONAL & INLAND: During the day, a vessel with a tow over 200 meters in length will show _______.
A. a black ball
B. a diamond shape
C. two cones, apexes together
D. One cone, apex upward |
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Definition
B. a diamond shape
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A fog signal of one prolonged blast followed by four short blasts would mean the presence of a ___.
A. vessel being towed
B. fishing vessel trawling
C. vessel at anchor warning of her location
D. power-driven pilot vessel on station underway |
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Definition
D. power-driven pilot vessel on station underway
Answer: D, Rule 35.j (Int) or 35.i. (Inland) A pilot vessel when engaged on pilotage duty may, in addition to the sound signals for a power driven vessel underway making way, underway not making way, or at anchor, may sound an identity signal consisting of four short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel not under command, underway but not making way, would show ______.
A. two all-round red lights in a vertical line
B. sidelights
C. a sternlight
D. all of the above |
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Definition
A. two all-round red lights in a vertical line
Answer: A, Rule 27.a. A vessel not under command shall exhibit two all round red lights in a vertical line where they can best be seen, two balls in a vertical line where they can best be seen, and when making way through the water sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true, according to the rules?
A. a fishing vessel has the right of way over a vessel constrained by her draft
B. a vessel not under command shall avoid impeding the safe passage of a vessel constrained by her draft
C. A vessel engaged in fishing shall, so far as possible, keep out of the way of a vessel restricted in her ability to maneuver
D. A vessel restricted in her ability to maneuver shall keep out of the way of a vessel not under command |
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Definition
C. A vessel engaged in fishing shall, so far as possible, keep out of the way of a vessel restricted in her ability to maneuver
Answer: C, Rule 18.c. A vessel engaged in fishing when underway shall, so far as possible, keep out of the way of a vessel not under command and a vessel restricted in her ability to maneuver. |
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Term
BOTH INTERNATIONAL & INLAND: Which lights shall a 200-meter vessel exhibit when at anchor?
A. in the forepart of the vessel, a 225 degree white light
B. in the after part of the vessel, a 112.5 degree white light
C. Any available working lights to illuminate the decks
D. In the forepart of the vessel, a 112.5 degree white light |
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Definition
C. Any available working lights to illuminate the decks
Answer: C, Rule 30.c. A vessel at anchor may, and a vessel of 100 meters or more in length shall, also use the available working or equivalent lights to illuminate her decks. |
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Term
BOTH INTERNATIONAL & INLAND: As defined in the rules, the term "vessel" would include a ________.
A. non-self-propelled raft
B. seaplane
C. hovercraft
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 3.a. The word vessels includes every description of water craft, including nondisplacement craft and seaplanes, used or capable of being used as a means of transportation on water. |
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Term
BOTH INTERNATIONAL & INLAND: You see a vessel displaying three lights in a vertical line. The highest and lowest lights are red and the middle is white. She is also showing a white light at the stern, which is lower than the forward light. It could be a _______.
A. survey vessel
B. vessel not under command
C. vessel aground
D. pilot vessel with port side to you |
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Definition
A. survey vessel
Answer: A, , Rule 27.b. A vessel restricted in her ability to maneuver (except a vessel engaged in mineclearance ops) shall exhibit where they can best be seen an all-round red over white over red light, or shapes of ball over diamond over ball. When making way through the water she shall show masthead lights, sidelights and a sternlight. When at anchor, in addition to the red over white over red, appropriate anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: A pilot vessel may continue to sound an identity signal in fog if she is ______.
A. aground
B. at anchor
C. not under command
D. no longer on pilotage duty |
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Definition
B. at anchor
Answer: B, Rule 35.j (Int) or 35.i. (Inland) A pilot vessel when engaged on pilotage duty may, in addition to the sound signals for a power driven vessel underway making way, underway not making way, or at anchor, may sound an identity signal consisting of four short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: You are in charge of a stand-on vessel in a crossing situation. The other vessel is 1.5 miles to port. You have determined that risk of collision exists. You should ______.
A. take avoiding action immediately upon determining that risk of collision exists
B. immediately sound the danger signal, and change course
C. take avoiding action only after giving the give-way vessel time to take action, and determining that her action is not appropriate
D. hold course and speed until the point of extremis, and then sound the danger signal, taking whatever action will best avoid collision |
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Definition
C. take avoiding action only after giving the give-way vessel time to take action, and determining that her action is not appropriate
Answer: C, Rule 17.a.ii Where one of two vessels is to keep out of the way of another, the other shall keep her course and speed. The latter vessel may, however, take action to avoid collision by her maneuver alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel engaged in a towing operation which severely restricts the towing vessel and her tow in their ability to deviate from their course shall, when making way, show ____.
A. the lights for a towing vessel
B. the lights for a vessel restricted in its ability to maneuver
C. sidelights and sternlight
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 27.c. A vessel engaged in a towing operation which severely restricts the towing vessel and her tow in their ability to deviate from their course shall show both the lights (and shapes) for towing and the lights(and shapes) for restricted in her ability to maneuver. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning seaplanes on the water?
A. a seaplane must exhibit appropriate lights but need not exhibit shapes
B. A seaplane should show the lights for a vessel constrained by her draft
C. In situations where a risk of collision exists, a seaplane should always give way
D. A seaplane on the water shall, in general, keep well clear of all vessels |
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Definition
D. A seaplane on the water shall, in general, keep well clear of all vessels
Answer: D, Rule 18.e (Int) and Rule 18.d (Inland) A seaplane on the water shall, in general, keep well clear of all vessels and avoid impeding their navigation. |
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Term
BOTH INTERNATIONAL & INLAND: A head on situation at night would be one in which you see _____.
A. one sidelight of a vessel ahead of you
B. one sidelight and a masthead light of a vessel ahead of you
C. one sidelight, a masthead and range light of a vessel ahead of you
D. both sidelights of a vessel ahead of you |
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Definition
D. both sidelights of a vessel ahead of you
Answer: D, Rule 14.b. A head on situation shall be deemed to exist when a vessel sees the other ahead or nearly ahead and by night she could see the masthead lights of the other in a line or nearly in a line or both sidelights and by day she observes the corresponding aspect of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: In a crossing situation, the stand-on vessel should normally ______.
A. take action to cross ahead of the other vessel
B. take action to pass astern of the other vessel
C. maintain course and speed
D. change course and increase speed |
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Definition
C. maintain course and speed
Answer: C, Rule 17.a.i. says where one of two vessels is to keep out of the way, the other shall keep her course and speed. |
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Term
BOTH INTERNATIONAL & INLAND: A dredge not engaged in dredging but proceeding to a dredging location at night would _______.
A. not be required to show any lights
B. be required to show the lights of an underway dredge
C. be required to show the lights of a stationary dredge
D. be required to show the lights of a power-driven vessel underway |
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Definition
D. be required to show the lights of a power-driven vessel underway
Answer: D, |
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Term
BOTH INTERNATIONAL & INLAND: At night you sight a vessel displaying one green light. This light could indicate a ____.
A. vessel drifting
B. vessel at anchor
C. small motorboat underway
D. sailboat underway |
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Definition
D. sailboat underway
Answer: D, Starboard running light of sailing vessel. Small motorboat would show an all-round white light with the side light. |
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Term
BOTH INTERNATIONAL & INLAND: There is provision to depart from the rules, if necessary, to avoid _____.
A. a close-quarters situation
B. an overtaking situation
C. immediate danger
D. any of the above |
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Definition
C. immediate danger
Answer: C. Rule 2.b. In construing and complying with these rules due regard shall be had to all dangers of navigation and collision and to any special circumstances, including the limitations of the vessels involved, which may make a departure from these rules necessary to avoid collision. |
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Term
BOTH INTERNATIONAL & INLAND: Risk of collision exists when an approaching vessel has a(n) ______.
A. generally steady bearing and decreasing range
B. generally steady range and increasing bearing
C. increasing range and bearing
D. Decreasing bearing only |
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Definition
A. generally steady bearing and decreasing range
Answer: A, Rule 7.d. Risk of collision shall be deemed to exist if the compass bearing of an approaching vessel does not appreciably change, and such risk may sometimes exist even when an appreciable bearing change is evident, particularly when approaching a very large vessel or a tow, or when approaching a vessel at very close range. |
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Term
BOTH INTERNATIONAL & INLAND: What signal shall be used to indicate doubt that sufficient action is being taken by another vessel to avoid collision?
A. five short and rapid blasts of the whistle
B. three long blasts of the whistle
C. Three short and rapid blasts of the whistle
D. One prolonged blast followed by three short blasts of the whistle |
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Definition
A. five short and rapid blasts of the whistle
Answer: A, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: Power-driven vessel when towing another vessel astern (tow less than 200 meters) shall show _____.
A. two masthead lights in a vertical line instead of the forward masthead light
B. two masthead lights in a vertical line instead of either the forward or after masthead lights
C. two towing lights in a vertical line at the stern
D. a small white light abaft the funnel |
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Definition
B. two masthead lights in a vertical line instead of either the forward or after masthead lights
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog, you hear the rapid ringing of a bell for about five seconds followed by the sounding of a gong for about five seconds. This signal came from a ____.
A. vessel fishing
B. seaplane anchored
C. vessel over 100 meters in length at anchor
D. vessel aground |
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Definition
C. vessel over 100 meters in length at anchor
Answer: C, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in a narrow channel and you are being overtaken by a vessel astern. The overtaking vessel sounds a signal indicating his intention to pass your vessel on your starboard side. If such an action appears dangerous you should sound _____.
A. five short and rapid blasts
B. three short and rapid blasts
C. one prolonged followed by one short blast
D. one prolonged, one short, one prolonged and one short blast in that order |
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Definition
A. five short and rapid blasts
Answer: A, Rule 34.c.ii. The vessel about to be overtaken, if in doubt, shall sound the danger signal. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel restricted in her ability to maneuver shall
A. turn off her sidelights when not making way
B. when operating in restricted visibility, sound a whistle signal of one prolonged and two short blasts
C. show a dayshape of two diamonds in a vertical line
D. keep out of the way of a vessel engaged in fishing |
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Definition
B. when operating in restricted visibility, sound a whistle signal of one prolonged and two short blasts
Answer: B, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel at anchor sounds her fog signal at intervals of not _____.
A. more than one minute
B. more than two minutes
C. more than three minutes
D. less than two minutes |
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Definition
A. more than one minute
Answer: A, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Your vessel is underway in reduced visibility. You hear, about 20 degrees on the starboard bow, a fog signal of another vessel. Which of the following actions should you take?
A. alter course to starboard to pass around the other vessel
B. Slow your engines and let him pass ahead of you
C. Reduce your speed to bare steerageway
D. alter course to port to pass him on his port side |
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Definition
C. Reduce your speed to bare steerageway
Answer: C, Rule 8.e. If necessary to avoid collision or allow more time to assess the situation, a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion. |
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Term
BOTH INTERNATIONAL & INLAND: What dayshape would a vessel at anchor show during daylight?
A. one black ball
B. two black balls
C. three black balls
D. No signal |
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Definition
A. one black ball
Answer: A, Rule 30.a. A vessel at anchor shall exhibit where it can best be seen one all-round white light or one ball in the forepart, and at or near the stern at another light at a lower level than the bow light. |
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Term
BOTH INTERNATIONAL & INLAND: When approaching a bend in a channel where you cannot see around the other side because of the height of the bank, you should _______.
A. stop engines and navigate with caution
B. stay in the middle of the channel
C. sound passing signals to any other vessel that may be on the other side of the bend
D. sound a whistle blast of at least 4 to 6 seconds duration |
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Definition
D. sound a whistle blast of at least 4 to 6 seconds duration
Answer: D, Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning a vessel of 150 meters in length, at anchor?
A. she may show an all-round white light where it can best be seen
B. she must show an all-round white light forward and a second such light aft
C. the use of working lights is optional
D. none of the above |
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Definition
B. she must show an all-round white light forward and a second such light aft
Answer: B, Rule 30. A vessel at anchor shall exhibit where it can best be seen one all-round white light or one ball in the forepart, and at or near the stern at another light at a lower level than the bow light. A vessel of less than 50 meters may exhibit an all-round light instead of these two lights, while a vessel of 100 meters or more shall also use the available working or equivalent lights to illuminate her decks.. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following vessels would be required to show a white light from a lantern exhibited in sufficient time to prevent collision?
A. A vessel sailing
B. A rowboat
C. A 6-meter motorboat
D. a small vessel fishing |
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Definition
B. A rowboat
Answer: B, Rule 25.d.ii. A vessel under oars may exhibit the lights for sailing vessels, but if she does not, she shall have ready at hand a lantern showing a white light which shall be exhibited in sufficient time to prevent collision. |
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Term
BOTH INTERNATIONAL & INLAND: Barges being towed at night _____;
A. must be lighted at all times
B. must be lighted only if manned
C. must be lighted only if towed astern
D. need not be lighted |
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Definition
A. must be lighted at all times
Answer: A, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: When you sight another vessel ahead showing both the red and green sidelights, the most appropriate action you should take would be to _____.
A. carefully watch his compass bearing
B. start a radar plot in order to ascertain his course
C. Alter your course to port
D. alter your course to starboard |
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Definition
D. alter your course to starboard
Answer: D, Rule 14.b A head on situation shall be deemed to exist when a vessel sees the other ahead, or nearly ahead, and by night she could see the masthead lights of the other in a line or nearly in a line, or both sidelights, and by day she observes the corresponding aspect of the other vessel. Rule 14.a. Unless otherwise agreed, when two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision, each shall alter her course to starboard so that each shall pass on the port side of the other. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in fog and hear one short, one prolonged, and one short blast in succession. What is the meaning of this signal?
A. vessel in distress
B. vessel is fishing
C. vessel is at anchor
D. vessel is towing |
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Definition
C. vessel is at anchor
Answer: C, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel engaged on pilotage duty which is at anchor must show which of the following lights at night?
A. a sternlight only
B. Anchor lights only
C. an all-round white light over a red light only
D. an all-round white light over a red light and anchor lights |
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Definition
D. an all-round white light over a red light and anchor lights
Answer: D, Rule 29.a A vessel engaged on pilotage duty shall exhibit an all-round white over all-round red at the masthead, when underway a sidelights and a sternlight, and anchor lights when at anchor. When not engaged on pilotage duty shall exhibit the lights or shapes prescribed for a similar vessel of her length. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel which is fishing is required to show sidelights and a sternlight only when ____.
A. anchored
B. underway
C. dead in the water
D. underway and making way |
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Definition
D. underway and making way
Answer: D, Rule 26.b.i. A vessel when engaged in trawling shall exhibit at the mast an all-round green over an all-round white light (or a shape consisting of two cones with their apexes together), a masthead light abaft of and higher than the all-round green light (a vessel of less than 50 meters may not show this light), and when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is a requirement for action taken to avoid collision?
A. when in sight of another vessel, any action taken must be accompanied by sound signals
B. the action taken must include changing the speed of the vesssel
C. The action must be positive and made in ample time
D. all of the above |
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Definition
C. The action must be positive and made in ample time
Answer: C, Rule 8.a. Any action taken to avoid collision shall, if the circumstances of the case admit, be positive, made in ample time, and with due regard to the observance of good seamanship. |
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Term
BOTH INTERNATIONAL & INLAND: In the daytime, you see a large sailing vessel on the beam. You know that she is also propelled by machinery if she shows _____.
A. a basket
B. black ball
C. black cone
D. two black cones |
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Definition
C. black cone
Answer: C, Rule 25.e. A vessel proceeding under sail when also being propelled by machinery shall exhibit forward where it can best be seen a conical shape, apex downwards. |
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Term
BOTH INTERNATIONAL & INLAND: Your vessel is stopped and making no way, but is not in any way disabled. Another vessel is approaching you on your starboard beam. Which statement is true?
A. the other vessel must give way since your vessel is stopped
B. Your vessel is the give way vessel in a crossing situation
C. You should be showing the lights or shapes for a vessel not under command
D. You should be showing the lights or shapes for a vessel restricted in her ability to maneuver |
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Definition
B. Your vessel is the give way vessel in a crossing situation
Answer: B, |
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Term
BOTH INTERNATIONAL & INLAND: For identification purposes at night, U.S. Navy submarines on the surface may display an intermittent flashing light of which color?
A. amber (yellow)
B. white
C. Blue
D. Red |
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Definition
A. amber (yellow)
Answer: A (??) |
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Term
BOTH INTERNATIONAL & INLAND: Vessels engaged in fishing may show the additional signals described in Annex II to the rules when they _____.
A. desire to do so
B. are fishing in a traffic separation zone
C. are in a narrow channel
D. are in close proximity to other vessels engaged in fishing |
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Definition
D. are in close proximity to other vessels engaged in fishing
Answer: D, Rule 26.d. Annex II contain additional signals which apply to vessel engaged in fishing in close proximity to other vessels engaged in fishing. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel must show a masthead light abaft of and higher than her identifying lights?
A. 55-meter vessel fishing
B. a 55-meter vessel trawling
C. A 100-meter vessel not under command
D. a 20-meter vessel engaged on pilotage duty |
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Definition
B. a 55-meter vessel trawling
Answer: B, Rule 26.b.i. A vessel when engaged in trawling shall exhibit at the mast an all-round green over an all-round white light (or a shape consisting of two cones with their apexes together), a masthead light abaft of and higher than the all-round green light (a vessel of less than 50 meters may not show this light), and when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in a narrow channel, a vessel should stay ____.
A. in the middle of the channel
B. to the starboard side of the channel
C. to the port side of the channel
D. to the side of the channel that has the widest bends |
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Definition
B. to the starboard side of the channel
Answer: B, Rule 9.a. A vessel proceeding along the course of a narrow channel or fairway shall keep as near to the outer limit of the channel or fairway which lies on her starboard side |
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Term
BOTH INTERNATIONAL & INLAND: Vessels of less than what length may not impede the passage of other vessels in a narrow fairway?
A. 10 meters
B. 20 meters
C. 30 meters
D. 40 meters |
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Definition
B. 20 meters
Answer: B, , Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: A lantern combining the two sidelights of a vessel's running lights may be shown on a ____.
A. sailing vessel of 25 meters in length
B. 20-meter vessel engaged in fishing and making way
C. 25-meter power-driven vessel engaged in trolling
D. 6-meter vessel under power |
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Definition
D. 6-meter vessel under power
Answer: D, Rule 23.c A power driven vessel of less than 12 meters in length may, instead of standard running lights, exhibit an all-round white light and sidelights |
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Term
BOTH INTERNATIONAL & INLAND: The lights required by the rules must be shown _____.
A. from sunrise to sunset in restricted visibility
B. at all times
C. only from sunset to sunrise
D. whenever a look-out is posted |
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Definition
A. from sunrise to sunset in restricted visibility
Answer: A, Rule 20.c. The lights prescribed by these rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel may carry her sidelights and sternlight in a combined lantern on the mast?
A. an 18-meter sailing vessel
B. A 10-meter sailing vessel also being propelled by machinery
C. a 25-meter sailing vessel
D. all of the above |
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Definition
A. an 18-meter sailing vessel
Answer: A, Rule 25.b. A sailing vessel of less than 20 meters in length may combine into one lantern her sidelights and sternlight to be carried near the top of the mast where it can best be seen.. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel nearing a bend or an area of a channel or fairway where other vessels may be hidden by an obstruction shall _____.
A. set her engines on slow ahead
B. sound a prolonged blast
C. post a look-out
D. all of the above |
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Definition
B. sound a prolonged blast
Answer: B, Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: You are approaching a vessel dredging during the day and see two balls in a vertical line off the port side of the dredge. These shapes mean that ____.
A. you should pass on the port side of the dredge
B. there is an obstruction on the port side of the dredge
C. the dredge is not under command
D. the dredge is moored |
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Definition
B. there is an obstruction on the port side of the dredge
Answer: B, Rule 27.d. A vessel engaged in dredging or underwater operations, when restricted in her ability to maneuver, shall exhibit the lights for restricted in her ability of maneuver and, when an obstruction exists, exhibit two all-round red lights (or two balls) in a vertical line to indicate the side on which the obstruction exists, two all-round green lights (or two diamonds) in a vertical line to indicate the side on which another vessel may pass, and when at anchor shall not show the lights prescribed for anchored vessels. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning the light used to accompany whistle signals?
A. it is mandatory to use such a light
B. the light shall have the same characteristics as a masthead light
C. it is only used to supplement short blasts of the whistle
D. all of the above |
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Definition
C. it is only used to supplement short blasts of the whistle
Answer: C, Rule 34,b,iii The light used as a supplement to whistle signals shall, if fitted, be an all-round white light (International may be yellow and must be synchronized with the whistles) |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel must sound its fog signal at intervals not to exceed one minute?
A. a power-driven vessel underway, not making way
B. a vessel constrained by her draft
C. a sailing vessel
D. a vessel aground |
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Definition
D. a vessel aground
Answer: D, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: By day, you sight a vessel displaying three shapes in a vertical line. The top and bottom shapes are balls, and the middle shape is a diamond. It is a ________.
A. vessel trolling
B. mineclearing vessel
C. trawler
D. vessel engaged in replenishment at sea |
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Definition
D. vessel engaged in replenishment at sea
Answer: D, , Rule 27.b. A vessel restricted in her ability to maneuver (except a vessel engaged in mineclearance ops) shall exhibit where they can best be seen an all-round red over white over red light, or shapes of ball over diamond over ball. When making way through the water she shall show masthead lights, sidelights and a sternlight. When at anchor, in addition to the red over white over red, appropriate anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: You are heading due east (090*) and observe a vessel's red sidelight on your port beam. The vessel may be heading ________.
A. northwest (315*)
B. North (000*)
C. southeast (135*)
D. southwest (225*) |
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Definition
D. southwest (225*)
Answer: D |
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Term
BOTH INTERNATIONAL & INLAND: When two power-driven vessels are crossing, which vessel has the right of way?
A. The vessel which is to starboard of the other vessel
B. The vessel which is to port of the other vessel
C. The larger vessel
D. The vessel that sounds the first whistle signal |
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Definition
A. The vessel which is to starboard of the other vessel
Answer: A, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is, by definition, unable to keep out of the way of another vessel?
A. vessel engaged in fishing
B. vessel restricted in her ability to maneuver
C. sailing vessel
D. vessel towing |
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Definition
B. vessel restricted in her ability to maneuver
Answer: B, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel must exhibit forward and after masthead lights when underway?
A. 200-meter sailing vessel
B. a 50-meter power-driven vessel
C. a 100-meter vessel engaged in fishing
D. all of the above |
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Definition
B. a 50-meter power-driven vessel
Answer: B, Rule 23.a. A power driven vessel underway shall exhibit a masthead light forward, a second masthead light abaft and higher this light ( A vessel less than 50 meters may not exhibit this light), sidelights, and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: As defined in the rules, a towing light is a yellow light having the same characteristics as a(n) ____.
A. masthead light
B. all-round light
C. sidelight
D. sternlight |
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Definition
D. sternlight
Answer: D, Rule 21.d. "Towing light" means a yellow light having the same characteristics as the sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel underway and making way in fog shall sound every two minutes
A. one prolonged blast
B. two prolonged blasts
C. one prolonged blast and two short blasts
D. three distinct blasts |
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Definition
A. one prolonged blast
Answer: A, Rule 35.a In or near an area of restricted visibility, whether by day or night, a power driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast. |
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Term
BOTH INTERNATIONAL & INLAND: When anchoring a 20-meter vessel at night, you must show ____.
A. one all-round white light
B. two all-round white lights
C. one all-round white light and the sternlight
D. one all-round white light and a flare up light |
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Definition
A. one all-round white light
Answer: A, Rule 30.a. A vessel at anchor shall exhibit where it can best be seen one all-round white light or one ball in the forepart, and at or near the stern at another light at a lower level than the bow light. |
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Term
BOTH INTERNATIONAL & INLAND: According to the navigation rules, all of the following are engaged in fishing EXCEPT a vessel ____.
A. setting nets
B. trawling
C. using a dredge net
D. trolling |
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Definition
D. trolling
Answer: D, Rule 3.d. The term "vessel engaged in fishing" means any vessel fishing with nets, lines, trawls, or other fishing apparatus which restricts maneuverability, but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict maneuverability |
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Term
BOTH INTERNATIONAL & INLAND: When a vessel sounds three short blasts on the whistle, this indicates that _______.
A. danger is ahead
B. her engines are going astern
C. the vessel is not under command (broken down)
D. all other vessels should stand clear |
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Definition
B. her engines are going astern
Answer: B, , Rule 34.a Three short blasts mean "I am operating astern propulsion" |
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Term
BOTH INTERNATIONAL & INLAND: An overtaking situation occurs when one vessel approaches another from more than how many degrees abaft the abeam?
A. 0.0 degrees
B. 11.25 degrees
C. 22.5 degrees
D. 45.0 degrees |
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Definition
C. 22.5 degrees
Answer: C, Rule 13.b. A vessel shall be deemed to be overtaking when coming up with another vessel from a direction more than 22.5 degrees abaft her beam; that is, in such a position with reference to the vessel she is overtaking, that at night she would be able to see only the sternlight of that vessel but neither of her sidelights. |
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Term
BOTH INTERNATIONAL & INLAND: What equipment for fog signals is required for a vessel 20 meters in length?
A. whistle only
B. bell only
C. whistle and bell only
D. whistle, bell and gong |
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Definition
C. whistle and bell only
Answer: C, Rule 33.a. A vessel of 12 meters or more in length shall be provided with a whistle and a bell. A vessel of 100 meters or more in length shall, in addition, be provided with a gong. The bell and/or gong may be replaced by other equipment having the same respective sound characteristics, but manual sounding of the signals shall always be possible. |
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Term
BOTH INTERNATIONAL & INLAND: Sailing vessels have the right of way over power-driven vessels except ________.
A. in a crossing situation
B. in a meeting situation
C. when they are the overtaking vessel
D. on the inland waters of the U.S. |
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Definition
C. when they are the overtaking vessel
Answer: C, , Rule 13.a. Any vessel overtaking any other shall keep out of the way of the vessel being overtaken. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning risk of collision?
A. risk of collision does not exist if the compass bearing of the other vessel is changing
B. proper use shall be made of radar equipment to determine risk of collision.
C. risk of collision must be determined before any action can be taken by a vessel
D. risk of collision shall exist if the vessels will pass within half a mile of each other |
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Definition
B. proper use shall be made of radar equipment to determine risk of collision.
Answer: B, Rule 7.b Proper use shall be made of radar equipment if fitted and operational, including long-range scanning to obtain early warning of risk of collision and radar plotting or equivalent systematic observation of detected objects.. |
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Term
BOTH INTERNATIONAL & INLAND: You are fishing at night, and you sight a vessel showing three lights in a vertical line. The upper and lower lights are red and the middle light is white. Which statement is true?
A. You must keep out of the way of the other vessel
B. The other vessel is responsible to keep out of your way
C. the other vessel is at anchor
D. the rule of special circumstances applies |
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Definition
A. You must keep out of the way of the other vessel
Answer: A, Rule 18.c. A vessel engaged in fishing when underway shall, so far as possible, keep out of the way of a vessel not under command and a vessel restricted in her ability to maneuver. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is to sound a fog signal of one prolonged followed by two short blasts?
A. A vessel not under command
B. a sailing vessel, underway
C. a vessel restricted in her ability to maneuver, at anchor
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel may exhibit lights other than those prescribed by the rules as long as the additional lights _____.
A. do not interfere with the keeping of a proper lookout
B. are not the color of either sidelight
C. have a lesser range than the prescribed lights
D. all of the above |
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Definition
B. are not the color of either sidelight
Answer: B, Rule 20.b. The rules concerning lights shall be complied with from sunset to sunrise, and during such times no other lights shall be exhibited, except such lights as cannot be mistaken for the lights specified in these rules or do not impair their visibility or distinctive character, or interfere with the keeping of a proper lookout. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning a partly submerged vessel being towed?
A. It must show a yellow light at each end
B. it will show red lights along its length
C. a diamond shape will be carried at the aftermost extremity of the tow
D. all of the above |
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Definition
C. a diamond shape will be carried at the aftermost extremity of the tow
Answer: C, Rule 24.g. An inconspicuous, partly submerged vessel or object being towed shall exhibit one all-round white light at or near each end if it is less than 25 meters in breadth, four all-round white lights to mark its length and breadth if it is 25 meters or more in breadth, and if it exceeds 100 meters in length, additional all-round white lights between these lights so that the distance between the lights shall not exceed 100 meters. Additionally, a diamond shape at or near the aftermost extremity of the last vessel or object being towed. The towing vessel may also direct a searchlight in the direction of the tow to indicate its presence to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Your vessel enters fog. You stop your engines and the vessel is dead in the water. What fog signal should you sound?
A. one prolonged blast every two minutes
B. Two prolonged blasts every two minutes
C. three short blasts every two minutes
D. One prolonged and two short blasts every two minutes |
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Definition
B. Two prolonged blasts every two minutes
Answer: B, Rule 35.b A power driven vessel underway, but stopped and making no way through the water, shall sound at intervals of not more than 2 minutes, 2 prolonged blasts in succession with an interval of about 2 seconds between them. |
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Term
BOTH INTERNATIONAL & INLAND: The term "Power-driven vessel" refers to any vessel _______.
A. with propelling machinery onboard whether in use or not
B. making way against the current
C. with propelling machinery in use
D. travelling at a speed greater than that of the current |
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Definition
C. with propelling machinery in use
Answer: C, Rule 3.c. The term "sailing vessel" means any vessel under sail provided that propelling machinery, if fitted, is not being used. |
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Term
BOTH INTERNATIONAL & INLAND: In which situation do the rules require both vessels to change course?
A. Two power-driven vessels meeting head on
B. two power-driven vessels crossing when it is apparent to the stand-on vessel that the give way vessel in not taking appropriate action
C. Two sailing vessels crossing with the wind on the same side
D. all of the above |
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Definition
A. Two power-driven vessels meeting head on
Answer: A, Rule 14.a Unless otherwise agreed, when two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision, each shall alter her course to starboard so that each shall pass on the port side of the other. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel towing where the tow prevents her from changing course shall carry ________.
A. only the lights for a vessel towing
B. only the lights for a vessel restricted in her ability to maneuver
C. the lights for a towing vessel and the lights for a vessel restricted in her ability to maneuver
D. the lights for a towing vessel and the lights for a vessel not under command |
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Definition
C. the lights for a towing vessel and the lights for a vessel restricted in her ability to maneuver
Answer: C, Rule 27.c. A vessel engaged in a towing operation which severely restricts the towing vessel and her tow in their ability to deviate from their course shall show both the lights (and shapes) for towing and the lights(and shapes) for restricted in her ability to maneuver. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following statements are true concerning the danger signal?
A. may be sounded by the stand-on vessel only
B. indicates that the vessel is in distress
C. is used to indicate a course change
D. may be supplemented by an appropriate light signal |
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Definition
D. may be supplemented by an appropriate light signal
Answer: D, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: If a sailing vessel with the wind on the port side sees a sailing vessel to windward and cannot tell whether the other vessel has the wind on the port or starboard side, she shall _______.
A. hold course and speed
B. sound the danger signal
C. keep out of the way of the other vessel
D. turn to port and come into the wind |
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Definition
C. keep out of the way of the other vessel
Answer: C, Rule 12.a. When two sailing vessels are approaching one another so as to involve risk of collision one shall keep out of the way of the other. If the each has the wind on different sides, the vessel which has the wind on her port shall keep out of the way of the other. If both have the wind on the same side, the one which is to windward shall keep out of the way of the vessel which is to leeward. If a vessel with the wind on the port side sees a vessel to windward and cannot determine what side she has her wind on, she shall keep out of the way of the other. |
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Term
BOTH INTERNATIONAL & INLAND: Vessel "A" is on course 000* True. Vessel "B" is on a head-on course and is bearing 355* True, 200 yards away from vessel "A". To ensure a safe passing, vessel "A" should _________.
A. maintain course
B. alter course to port
C. alter course to ensure a starboard to starboard passing
D. maneuver to ensure a port to port passing |
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Definition
D. maneuver to ensure a port to port passing
Answer: D, Rule 14.a Unless otherwise agreed, when two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision, each shall alter her course to starboard so that each shall pass on the port side of the other. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is a vessel "restricted in her ability to maneuver"?
A. vessel not under command
B. vessel constrained by her draft
C. vessel underway in fog
D. vessel towing unable to deviate from her course |
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Definition
D. vessel towing unable to deviate from her course
Answer: D, Rule 27.c. A vessel engaged in a towing operation which severely restricts the towing vessel and her tow in their ability to deviate from their course shall show both the lights (and shapes) for towing and the lights(and shapes) for restricted in her ability to maneuver. |
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Term
BOTH INTERNATIONAL & INLAND: All of the following are distress signals under the rules EXCEPT _____.
A. green star signal
B. orange colored smoke
C. red flares
D. repeated raising and lowering of outstretched arms |
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Definition
A. green star signal
Answer: A, Annex IV, 87.1 |
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Term
BOTH INTERNATIONAL & INLAND: The rules state that vessels may depart from the Rules when _______.
A. there are no other vessels around
B. operating in a narrow channel
C. the master enters it in the ships log
D. necessary to avoid immediate danger |
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Definition
D. necessary to avoid immediate danger
Answer: D. Rule 2.b. In construing and complying with these rules due regard shall be had to all dangers of navigation and collision and to any special circumstances, including the limitations of the vessels involved, which may make a departure from these rules necessary to avoid collision. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel is towing and carrying the required masthead lights aft. What is the visibility arc of these lights?
A. 112.5°
B. 135.0°
C. 225.0°
D. 360.0° |
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Definition
C. 225.0°
Answer: C, Rule 21.a "Masthead light" means a white light placed over the fore and aft centerline of the vessel showing an unbroken light over an arc of the horizon of 225 degrees, from 22.5 degrees abaft the beam on one side to 22.5 degrees abaft the beam on the other. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following would be a "special circumstances" under the rules?
A. vessels at anchor
B. More than two vessels meeting
C. Speed in fog
D. Two vessels crossing |
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Definition
B. More than two vessels meeting
Answer: B, |
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Term
BOTH INTERNATIONAL & INLAND: You are approaching another vessel on crossing courses. She is approximately half a mile distant and is presently on your starboard bow. You believe she will cross ahead of you. She then sounds a whistle signal of five short blasts. You should ________.
A. answer the signal and hold course and speed
B. reduce speed slightly to make sure she will have room to pass
C. make a large course change, accompanied by the appropriate whistle signal, and slow down if necessary
D. wait for another whistle signal from the other vessel |
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Definition
C. make a large course change, accompanied by the appropriate whistle signal, and slow down if necessary
Answer: C, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. Rule 8.b Any alteration of course or speed to avoid collision shall, if the circumstances of the case admit, be large enough to be readily apparent tobe readily apparent to another vessel observing visually or by radar; a succession of small alterations of course or speed should be avoided. |
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Term
BOTH INTERNATIONAL & INLAND: The rules state that if there is any doubt as to whether a certain situation exists, it shall be considered to exist by the vessel in doubt. This principle applies to which situation(s)?
A. risk of collision
B. A vessel overtaking another vessel
C. A vessel meeting another head on
D. All of the above |
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Definition
D. All of the above
Answer: D, |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel may use the danger signal?
A. The vessel to port when two power-driven vessels are crossing
B. A vessel engaged in fishing, crossing the course of a sailing vessel
C. either of two power-driven vessels meeting end on
D. Any of the above |
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Definition
D. Any of the above
Answer: D, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: What is the minimum sound signaling equipment required aboard a vessel 10 meters in length?
A. a bell only
B. whistle only
C. bell and a whistle
D. any means of making an efficient sound signal |
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Definition
D. any means of making an efficient sound signal
Answer: D, Rule 33.b. A vessel of less than 12 meters in length shall not be obliged to carry the sound signaling appliances required for larger vessels, but if she does not she shall be provided with some other means of making an efficient sound signal. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true regarding equipment for sound signals?
A. a vessel of less than 12 meters in length need not have any sound signaling equipment
B. Any vessel over 12 meters in length must be provided with a gong
C. manual sounding of the signals must always be possible
D. automatic sounding of the signals is not permitted |
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Definition
C. manual sounding of the signals must always be possible
Answer: C, Rule 33.a. A vessel of 12 meters or more in length shall be provided with a whistle and a bell. A vessel of 100 meters or more in length shall, in addition, be provided with a gong. The bell and/or gong may be replaced by other equipment having the same respective sound characteristics, but manual sounding of the signals shall always be possible. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following statements concerning an overtaking situation is correct?
A. the overtaking vessel is the stand on vessel
B. neither vessel is the stand-on vessel
C. The overtaking vessel must maintain course and speed
D. The overtaking vessel must keep out of the way of the other |
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Definition
D. The overtaking vessel must keep out of the way of the other
Answer: D, , Rule 13.a. Any vessel overtaking any other shall keep out of the way of the vessel being overtaken. |
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Term
BOTH INTERNATIONAL & INLAND: The rules state that a vessel overtaking another vessel is relieved of her duty to keep clear when ____.
A. She is forward of the other vessel's beam
B. the overtaking situation becomes a crossing situation
C. She is past and clear of the other vessel
D. the other vessel is no longer in sight |
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Definition
C. She is past and clear of the other vessel
Answer: C, Rule 13.d. After an overtaking situation, any subsequent alteration of the bearing between the two vessels shall not make the overtaking vessel a crossing vessel within the meaning of the rules, or relieve her of the duty of keeping clear of the overtaken vessel until she is finally past and clear.. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning fog signals?
A. all fog signals for sailing vessels are to be given at intervals of not more than one minute
B. A vessel not under command sounds the same fog signal as a vessel towed
C. the identity signal of a pilot vessel is the only fog signal sounded by such a vessel
D. A vessel aground may sound a whistle signal |
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Definition
D. A vessel aground may sound a whistle signal
Answer: D, Rule 35.h (Int) or Rule 35.g (Inland). A vessel aground shall give the bell signal and if required the gong signal prescribed for a vessel at anchor, and shall in addition give three separate and distinct strokes on the bell immediately before and after the rapid ringing of the bell. A vessel aground may in addition sound an appropriate whistle signal. . |
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Term
BOTH INTERNATIONAL & INLAND: What dayshape would a vessel aground show during daylight?
A. one black ball
B. two black balls
C. three black balls
D. four black balls |
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Definition
C. three black balls
Answer: C, Rule 30.d. A vessel aground shall exhibit, along with the appropriate anchor lights, two all-round red lights in a vertical line, and three balls in a vertical line. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel must have a gong, or other equipment which will make the sound of a gong?
A. a sailing vessel
B. any vessel over 50 meters
C. any vessel over 100 meters
D. a power driven vessel over 75 meters |
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Definition
C. any vessel over 100 meters
Answer: C, Rule 33.a. A vessel of 12 meters or more in length shall be provided with a whistle and a bell. A vessel of 100 meters or more in length shall, in addition, be provided with a gong. The bell and/or gong may be replaced by other equipment having the same respective sound characteristics, but manual sounding of the signals shall always be possible. |
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Term
BOTH INTERNATIONAL & INLAND: A sailing vessel is meeting a vessel fishing in a narrow channel. Which statement is true?
A. the fishing vessel is directed not to impede the passage of the sailing vessel
B. the fishing vessel has the right of way
C. each vessel should move to the edge of the channel on her port side
D. each vessel should be displaying signals for a vessel constrained by her draft |
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Definition
A. the fishing vessel is directed not to impede the passage of the sailing vessel
Answer: A, Rule 9.c. A vessel engaged in fishing shall not impede the passage of any other vessel navigation within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: Dayshapes shall be shown ___________.
A. during daylight hours
B. during daylight hours in restricted visibility
C. between 8 AM and 4 PM daily
D. between sunset and sunrise |
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Definition
A. during daylight hours
Answer: A, Rule 20.d. The rules concerning shapes shall be complied with by day. |
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Term
BOTH INTERNATIONAL & INLAND: Rule 14 describes the action to be taken by vessels meeting head to head. Which of the following conditions must be true in order for this rule to apply?
A. both vessels must be power-driven
B. they must be meeting on reciprocal or nearly reciprocal courses
C. the situation must involve risk of collision
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 14.a Unless otherwise agreed, when two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision, each shall alter her course to starboard so that each shall pass on the port side of the other. |
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Term
BOTH INTERNATIONAL & INLAND: The sternlight shall be positioned such that it will show from dead astern to how many degrees on each side of the stern of the vessel?
A. 22.5°
B. 67.5°
C. 112.5°
D. 135° |
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Definition
B. 67.5°
Answer: B, Rule 21.c. "Sternlight" means a white light placed as nearly as practicable at the stern showing an unbroken light over an arc of the horizon of 135 degrees which shows the light 67.5 degrees on each side of the vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel aground at night is required to show two red lights in a vertical line as well as ________.
A. not under command lights
B. restricted in her ability to maneuver lights
C. anchor lights
D. sidelights and a sternlight |
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Definition
C. anchor lights
Answer: C, Rule 30.d. A vessel aground shall exhibit, along with the appropriate anchor lights, two all-round red lights in a vertical line, and three balls in a vertical line. |
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Term
BOTH INTERNATIONAL & INLAND: When towing more than one barge astern at night ______.
A. Only the last barge on the tow must be lighted
B. only the first and the last barges in the tow must be lighted
C. each barge in the tow must be lighted
D. only manned barges must be lighted |
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Definition
C. each barge in the tow must be lighted
Answer: C, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen |
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Term
BOTH INTERNATIONAL & INLAND: Your vessel is aground in fog. In addition to the regular anchor signals, you will be sounding _____.
A. Three strokes of the gong before and after the rapid ringing of the gong.
B. A blast from the whistle
C. three strokes of the bell before and after the rapid ringing of the bell
D. no additional signals |
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Definition
C. three strokes of the bell before and after the rapid ringing of the bell
Answer: C, Rule 35.h (Int) or Rule 35.g (Inland). A vessel aground shall give the bell signal and if required the gong signal prescribed for a vessel at anchor, and shall in addition give three separate and distinct strokes on the bell immediately before and after the rapid ringing of the bell. A vessel aground may in addition sound an appropriate whistle signal. . |
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Term
BOTH INTERNATIONAL & INLAND: In a crossing situation, the vessel which has the other on her own starboard side shall _______.
A. if the circumstances of the case admit, avoid crossing ahead of the other
B. change course to port to keep out of the way
C. reduce her speed
D. All of the above |
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Definition
A. if the circumstances of the case admit, avoid crossing ahead of the other
Answer: A, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel sounds the same fog signal when underway or at anchor?
A. a sailing vessel
B. vessel restricted in her ability to maneuver
C. Vessel constrained by her draft
D. vessel not under command |
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Definition
B. vessel restricted in her ability to maneuver
Answer: B, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: You are approaching a bend in a river where, due to the bank, you cannot see around the other side. A vessel on the other side of the bend sounds one prolonged blast. You should _______.
A. sound passing signals
B. not sound any signal until you sight the other vessel
C. sound a prolonged blast
D. sound the danger signal |
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Definition
C. sound a prolonged blast
Answer: C, Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: The rules require that a stand-on vessel take action to avoid collision when she determines that _____.
A. risk of collision exist
B. the other vessel will cross ahead of her
C. the other vessel is not taking appropriate action
D. collision cannot be avoided by the give way vessel's maneuver alone. |
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Definition
C. the other vessel is not taking appropriate action
Answer: C, Rule 17.a. Where one of two vessels is to keep out of the way of another, the other shall keep her course and speed. The latter vessel may, however, take action to avoid collision by her maneuver alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is "underway" according to the Rules?
A. vessel made fast to a single point mooring buoy
B. purse seiner hauling her nets
C. pilot vessel at anchor
D. vessel which has run aground |
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Definition
B. purse seiner hauling her nets
Answer: B, Rule 3.i (Int) or Rule 3.h (Inland). The word "underway" means that a vessel is not at anchor, or made fast to the shore, or aground. |
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Term
BOTH INTERNATIONAL & INLAND: When two power-driven vessels are crossing, the vessel which has the other to starboard must keep out of the way if _______.
A. She is the faster vessel
B. the situation involves risk of collision
C. the vessels will pass within half a mile of each other
D. whistle signals have been sounded |
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Definition
B. the situation involves risk of collision
Answer: B, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following signals may at some time be exhibited by a vessel trawling?
A. two white lights in a vertical line
B. a white light over a red light in a vertical line
C. two red lights in a vertical line
D. any of the above |
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Definition
D. any of the above
Answer: D, Annex II, 85.3.a. Vessels when engaged in trawling, whether using demersal or pelagic gear, may exhibit two white lights in a vertical line when shooting nets, one white light over one red light in a vertical line when hauling their nets, and two red lights in a vertical line when the net has come fast on an obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: Risk of collision is considered to exist if _______.
A. four vessels are nearby
B. a vessel has a steady bearing at a constant range
C. there is any doubt that a risk of collision exists
D. a special circumstance situation is apparent |
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Definition
C. there is any doubt that a risk of collision exists
Answer: C, Rule 7.a. Every vessel shall use all available means appropriate to the prevailing circumstances and conditions to determine if risk of collision exists. If there is any doubt such risk shall be deemed to exist. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in low visibility and sounding fog signals. What changes would you make in the fog signal immediately upon losing propulsion?
A. Begin sounding two prolonged blasts at two-minute intervals
B. begin sounding one prolonged blast followed by three short blasts at two-minute intervals
C. Begin sounding one prolonged blast followed by two short blasts at two-minute intervals
D. no change should be made in the fog signal |
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Definition
C. Begin sounding one prolonged blast followed by two short blasts at two-minute intervals
Answer: C, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: A power-driven vessel shows the same lights as a _______.
A. vessel engaged in towing, when not underway
B. vessel towing astern
C. sailing vessel
D. pushing vessel and a vessel being pushed, when they are rigidly connected in a composite unit |
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Definition
D. pushing vessel and a vessel being pushed, when they are rigidly connected in a composite unit
Answer: D, Rule 24.b. When a pushing vessel and a vessel being pushed ahead are rigidly connected in a composite unit they shall be regarded as a power driven vessel and exhibit the lights of a single vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel shall not show her sidelights?
A. any vessel that is not under command
B. any fishing vessel that is not making way
C. Any sailing vessel when becalmed
D. Any vessel engaged in underwater operations |
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Definition
D. Any vessel engaged in underwater operations
Answer: D, Rule 27.d. A vessel engaged in dredging or underwater operations, when restricted in her ability to maneuver, shall exhibit the lights for restricted in her ability of maneuver and, when an obstruction exists, exhibit two all-round red lights (or two balls) in a vertical line to indicate the side on which the obstruction exists, two all-round green lights (or two diamonds) in a vertical line to indicate the side on which another vessel may pass, and when at anchor shall not show the lights prescribed for anchored vessels. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel is overtaking when she can see which lights of the vessel she is approaching?
A. only the sternlight of the vessel
B. the sternlight and one sidelight of the vessel
C. only a sidelight of the vessel
D. the masthead lights of the vessel |
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Definition
A. only the sternlight of the vessel
Answer: A, Rule 13.b. A vessel shall be deemed to be overtaking when coming up with another vessel from a direction more than 22.5 degrees abaft her beam; that is, in such a position with reference to the vessel she is overtaking, that at night she would be able to see only the sternlight of that vessel but neither of her sidelights. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway and approaching a bend in the channel where vessels approaching from the opposite direction cannot be seen. You should sound ______.
A. one blast, 4 to 6 seconds in duration
B. Three blasts, 4 to 6 seconds in duration
C. one continuous blast until you are able to see around the bend
D. One blast, 8 to 10 seconds in duration |
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Definition
A. one blast, 4 to 6 seconds in duration
Answer: A, Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: The term "short blast" on the whistle or horn means a duration of _________.
A. 1 second
B. 4 to 6 seconds
C. 8 to 12 seconds
D. 12 to 15 seconds |
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Definition
A. 1 second
Answer: A, Rule 32.b. The term "short blast" means a blast of about 1 second's duration. |
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Term
BOTH INTERNATIONAL & INLAND: As defined in the rules, the term "vessel" includes ________.
A. seaplanes
B. nondisplacement craft
C. Barges
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 3.a. The word vessels includes every description of water craft, including nondisplacement craft and seaplanes, used or capable of being used as a means of transportation on water. |
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Term
BOTH INTERNATIONAL & INLAND: Under the rules, a vessel shall slacken her speed, stop, or reverse her engines to ______.
A. avoid collision
B. allow more time to assess the situation
C. be stopped in an appropriate distance
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 8.e. If necessary to avoid collision or allow more time to assess the situation, a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion. |
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Term
BOTH INTERNATIONAL & INLAND: An anchor ball need NOT be exhibited by a vessel if she is ______.
A. under 50 meters in length, and anchored in an anchorage
B. over 150 meters in length
C. rigged for sail
D. less than 7 meters in length, and not in or near an area where other vessels normally navigate |
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Definition
D. less than 7 meters in length, and not in or near an area where other vessels normally navigate
Answer: D, Rule 30.e. A vessel of less than 7 meters in length, when at anchor, not in or near a narrow channel fairway anchorage, or where other vessels normally navigate, shall not be required to exhibit anchor lights or shapes. |
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Term
BOTH INTERNATIONAL & INLAND: While underway at night you are coming up on a vessel from astern. What lights would you expect to see?
A. red and green sidelights
B. two white lights
C. one white lights and red and green sidelights
D. One white light |
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Definition
D. One white light
Answer: D, Rule 23.a. A power driven vessel underway shall exhibit a masthead light forward, a second masthead light abaft and higher this light ( A vessel less than 50 meters may not exhibit this light), sidelights, and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following describes a head-on situation?
A. seeing one red light of a vessel directly ahead
B. seeing two forward white towing lights in a vertical line on a towing vessel directly ahead
C. seeing both sidelights of a vessel directly off your starboard beam
D. Seeing both sidelights of a vessel directly ahead |
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Definition
D. Seeing both sidelights of a vessel directly ahead
Answer: D, Rule 14.b. A head on situation shall be deemed to exist when a vessel sees the other ahead or nearly ahead and by night she could see the masthead lights of the other in a line or nearly in a line or both sidelights and by day she observes the corresponding aspect of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel anchored in fog may warn an approaching vessel by sounding ___________.
A. the whistle continuously
B. one short, one prolonged, and one short blast of the whistle
C. five or more short and rapid blasts of the whistle
D. three distinct strokes on the bell before and after sounding the anchor signal |
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Definition
B. one short, one prolonged, and one short blast of the whistle
Answer: B, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog, you hear a vessel ahead sound two blasts on the whistle. You should _____.
A. sound two blasts and change course to the left
B. sound whistle signals only if you change course
C. sound only fog signals until the other vessel is sighted
D. not sound any whistle signals until the other vessel is sighted |
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Definition
C. sound only fog signals until the other vessel is sighted
Answer: C, Rule 35.b A power driven vessel underway, but stopped and making no way through the water, shall sound at intervals of not more than 2 minutes, 2 prolonged blasts in succession with an interval of about 2 seconds between them. |
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Term
BOTH INTERNATIONAL & INLAND: You are operating in restricted visibility and hear a signal of a rapidly ringing bell followed by the rapid sounding of a gong. It could be a _______________.
A. 30-meter sail vessel at anchor
B. 150-meter power-driven vessel aground
C. vessel in distress
D. 300-meter power-driven vessel at anchor |
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Definition
D. 300-meter power-driven vessel at anchor
Answer: D, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel being towed, if manned, shall sound a fog signal of ________.
A. two short blasts
B. three short blasts
C. one prolonged and two short blasts
D. one prolonged and three short blasts |
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Definition
D. one prolonged and three short blasts
Answer: D, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is the sound signal for a vessel 75 meters in length, restricted in her ability to maneuver when carrying out her work at anchor?
A. five second ringing of a bell at intervals of not more than one minute
B. One prolonged blast followed by two short blasts at intervals of not more than two minutes
C. five second ringing of a bell and five second sounding of a gong at intervals of not more than one minute
D. four short blasts at intervals of not more than two minutes |
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Definition
B. One prolonged blast followed by two short blasts at intervals of not more than two minutes
Answer: B, Rule 35.d (Int) or 35.c (Inland) A vessel engaged in fishing, when at anchor, and a vessel restricted in her ability to maneuver when carrying out her work at anchor, shall signal one prolonged and two short blasts instead of the anchor signal consisting of a bell and gong. |
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Term
BOTH INTERNATIONAL & INLAND: A look-out shall be maintained __________.
A. only at night
B. only during restricted visibility
C. at night and during restricted visibility
D. at all times |
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Definition
D. at all times
Answer: D, Rule 5 Every vessel shall at all times maintain a proper look-out by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and the risk of collision. |
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Term
BOTH INTERNATIONAL & INLAND: Risk of collision may be deemed to exist ___________.
A. if the compass bearing of an approaching vessel does NOT appreciably change
B. even when an appreciable bearing change is evident, particularly when approaching a vessel at close range
C. if you observe both sidelights of a vessel ahead for an extended period of time
D. all of the above |
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Definition
D. all of the above
Answer: D, Rule 7 |
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Term
BOTH INTERNATIONAL & INLAND: The rules state that certain factors are to be taken into account when determining safe speed. One of the factors stated is the __________.
A. state of wind, sea and current, and the proximity of navigational hazards
B. maximum attainable speed of your vessel
C. temperature
D. aids to navigation that are available |
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Definition
A. state of wind, sea and current, and the proximity of navigational hazards
Answer: A, Rule 6.a.v. All vessels shall take into account the state of wind, sea, and current, and the proximity of navigational hazards, when determining a safe speed. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel, when anchored at night, would not be required to show anchor lights?
A. a power driven vessel
B. a vessel on pilotage duty
C. a vessel dredging
D. a vessel restricted in her ability to maneuver |
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Definition
C. a vessel dredging
Answer: C, Rule 27.d. A vessel engaged in dredging or underwater operations, when restricted in her ability to maneuver, shall exhibit the lights for restricted in her ability of maneuver and, when an obstruction exists, exhibit two all-round red lights (or two balls) in a vertical line to indicate the side on which the obstruction exists, two all-round green lights (or two diamonds) in a vertical line to indicate the side on which another vessel may pass, and when at anchor shall not show the lights prescribed for anchored vessels. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel not under command shall display ________.
A. two red lights at night and two black balls during daylight
B. two red lights at night and three black balls during daylight
C. three red lights at night and two black balls during daylight
D. three red lights at night and three black balls during daylight |
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Definition
A. two red lights at night and two black balls during daylight
Answer: A, Rule 27.a. A vessel not under command shall exhibit two all round red lights in a vertical line where they can best be seen, two balls in a vertical line where they can best be seen, and when making way through the water sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel engaged in fishing while at anchor shall sound a fog signal of _______.
A. one prolonged and two short blasts at two minute intervals
B. one prolonged and three short blasts at two minute intervals
C. a rapid ringing of the bell for five seconds at one minute intervals
D. a sounding of the bell and gong at one minute intervals |
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Definition
A. one prolonged and two short blasts at two minute intervals
Answer: A, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: Underway at night you see the red sidelight of a vessel well off your port bow. Which statement is true?
A. you are required to alter course to the right
B. you must stop engines
C. you are on a collision course with the other vessel
D. you may maintain course and speed |
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Definition
D. you may maintain course and speed
Answer: D |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel would sound a fog signal consisting of the ringing of a bell for 5 seconds?
A. A vessel engaged in fishing, at anchor
B. a vessel restricted in its ability to maneuver, at anchor
C. a sailing vessel, at anchor
D. a sailing vessel becalmed |
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Definition
C. a sailing vessel, at anchor
Answer: C, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. Rule 35.d (Int) and Rule 35.c (Inland) A vessel engaged in fishing and a vessel restricted in her ability to maneuver, when at anchor, will signal one prolonged followed by two short blasts every two minutes. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel towing a barge astern would show, at the stern ________.
A. only a sternlight
B. a towing light above the sternlight
C. two towing lights in a vertical line
D. two white lights in a vertical line |
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Definition
B. a towing light above the sternlight
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: A fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a ________.
A. vessel being towed
B. fishing vessel engaged in trawling
C. vessel at anchor warning of her location
D. power-driven pilot vessel on station underway |
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Definition
D. power-driven pilot vessel on station underway
Answer: D, Rule 35.j (Int) or 35.i. (Inland) A pilot vessel when engaged on pilotage duty may, in addition to the sound signals for a power driven vessel underway making way, underway not making way, or at anchor, may sound an identity signal consisting of four short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: In addition to sidelights what light should a vessel being towed show?
A. a sternlight
B. a masthead light
C. not under command lights
D. range lights |
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Definition
A. a sternlight
Answer: A, Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: A pilot vessel may continue to sound an identity signal if she is _______.
A. aground
B. at anchor
C. not under command
D. being towed |
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Definition
B. at anchor
Answer: B, Rule 35.j (Int) or 35.i. (Inland) A pilot vessel when engaged on pilotage duty may, in addition to the sound signals for a power driven vessel underway making way, underway not making way, or at anchor, may sound an identity signal consisting of four short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: When two power-driven vessels are meeting head-on and there is a risk of collision, each shall _______.
A. stop her engine
B. alter course to starboard
C. sound the danger signal
D. back down |
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Definition
B. alter course to starboard
Answer: B, Rule 20.c. The lights prescribed by these rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel with a tow over 200 meters in length will, during the day, show ______.
A. a diamond shape
B. two cones, apexes together
C. black ball
D. one cone, apex upward |
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Definition
A. a diamond shape
Answer: A, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: What is the minimum length of vessels required to show two anchor lights?
A. 40 meters
B. 50 meters
C. 60 meters
D. 70 meters |
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Definition
B. 50 meters
Answer: B, Rule 30.b. A vessel at anchor, of less than 50 meters, may exhibit an all-round white light where it can best be seen instead of the forward and aft anchor lights required for vessels 50 meters and over. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel showing a rigid replica of the international code flag "A" is engaged in ________.
A. diving operations
B. dredging
C. fishing
D. mineclearance operations |
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Definition
A. diving operations
Answer: A, Rule 27.e.ii. Whenever the size of a vessel engaged in diving operations makes it impracticable to exhibit all lights and shapes required for a vessel restricted in ability to maneuver, the vessel shall exhibit an all-round red over white over red, and a rigid replica of the international code flag "A". |
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Term
BOTH INTERNATIONAL & INLAND: In determining "safe speed", all of the following must be taken into account EXCEPT the ________.
A. maximum horsepower of your vessel
B. presence of background lights at night
C. draft of your vessel
D. maneuverability of your vessel |
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Definition
A. maximum horsepower of your vessel
Answer: A, Rule 6.a. The maximum horsepower of the vessel is not mentioned as one of the factors taken into account when determining safe speed. |
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Term
BOTH INTERNATIONAL & INLAND: You are aboard the give-way vessel in a crossing situation. Which of the following should you NOT do in obeying the rules?
A. Cross ahead of the stand-on vessel
B. make a large course change to starboard
C. slow your vessel
D. back your vessel |
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Definition
A. Cross ahead of the stand-on vessel
Answer: A, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel, which does not normally engage in towing operations, is towing a vessel in distress. She _____.
A. need not show the lights for a vessel engaged in towing, if it is impractical to do so
B. may show the lights for a vessel not under command
C. must show a yellow light above the sternlight
D. must show the lights for a vessel towing |
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Definition
A. need not show the lights for a vessel engaged in towing, if it is impractical to do so
Answer: A, Rule 24.i (Int) or Rule 24.j (Inland). Where from any sufficient cause it is impracticable for a vessel not normally engaged in towing operations to display the lights required for a towing vessel, such vessel shall not be required to exhibit those lights when engaged in towing another vessel in distress or otherwise in need of assistance. All possible measures shall be taken to indicate the nature of the relationship between the towing vessel and the vessel being assisted. The searchlight is authorized to illuminate the tow. |
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Term
BOTH INTERNATIONAL & INLAND: An all-round flashing yellow light may be exhibited by a(n) ________.
A. vessel laying cable
B. vessel towing a submerged object
C. vessel not under command
D. air cushion vessel |
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Definition
D. air cushion vessel
Answer: D, Rule 23.b. An air cushion vessel when operating in the nondisplacement mode shall, in addition to running lights, exhibit an all-round flashing yellow light where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: Working lights shall be used to illuminate the decks of a vessel _______.
A. over 100 meters at anchor
B. not under command
C. constrained by her draft
D. any of the above |
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Definition
A. over 100 meters at anchor
Answer: A, Rule 30.c. A vessel at anchor may, and a vessel of 100 meters or more in length shall, also use the available working or equivalent lights to illuminate her decks. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel may show identifying lights when not actually engaged in her occupation?
A. a fishing vessel
B. a pilot vessel
C. a mineclearance vessel
D. none of the above |
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Definition
D. none of the above
Answer: D, |
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Term
BOTH INTERNATIONAL & INLAND: A pilot vessel may continue to sound an identity signal if she is _______.
A. underway, but not making way
B. aground
C. being towed
D. not engaged in pilotage duty |
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Definition
A. underway, but not making way
Answer: A, Rule 35.j (Int) or 35.i. (Inland) A pilot vessel when engaged on pilotage duty may, in addition to the sound signals for a power driven vessel underway making way, underway not making way, or at anchor, may sound an identity signal consisting of four short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: If your vessel is the stand on vessel in a crossing situation _______.
A. you must keep your course and speed
B. you may change course and speed as the other vessel must keep clear
C. the other vessel must keep her course and speed
D. both vessels must keep their course and speed |
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Definition
A. you must keep your course and speed
Answer: A, Rule 17.a.i. says where one of two vessels is to keep out of the way, the other shall keep her course and speed. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel proceeding along a narrow channel shall ________.
A. avoid crossing the channel at right angles
B. not overtake any vessels within the channel
C. keep as close as possible to the edge of the channel on her starboard side
D. when nearing a bend in the channel, sound a long blast of the whistle |
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Definition
C. keep as close as possible to the edge of the channel on her starboard side
Answer: C, Rule 9.a. A vessel proceeding along the course of a narrow channel or fairway shall keep as near to the outer limit of the channel or fairway which lies on her starboard side |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel would exhibit sidelights when underway and not making way?
A. a vessel towing astern
B. a vessel trawling
C. a vessel not under command
D. A vessel engaged in dredging operations |
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Definition
A. a vessel towing astern
Answer: A, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is not to impede the passage of a vessel which can only navigate safely within a narrow channel?
A. any vessel less than 20 meters in length
B. any sailing vessel
C. a vessel engaged in fishing
D. all of the above |
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Definition
D. all of the above
Answer: D, , Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. Rule 9.c. A vessel engaged in fishing shall not impede the passage of any other vessel navigating within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: A tug is towing three barges in line in fog. The second vessel of the tow should sound _________.
A. no fog signal
B. one short blast
C. one prolonged and three short blasts
D. one prolonged and two short blasts |
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Definition
A. no fog signal
Answer: A, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: The navigation rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within _________.
A. the distance of visibility
B. 1/2 the distance of visibility
C. a distance appropriate to the existing circumstances and conditions
D. the distance that it would require for the propeller to go from full ahead to full astern |
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Definition
C. a distance appropriate to the existing circumstances and conditions
Answer: C, Rule 6 Every vessel shall at all times proceed at a safe speed so that she can take proper and effective action to avoid collision and be stopped within a distance appropriate to the prevailing circumstances and conditions. |
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Term
BOTH INTERNATIONAL & INLAND: A towing vessel 35 meters in length, with a tow 100 meters astern, must show a minimum of how many masthead lights?
A. 1
B. 2
C. 3
D. 4 |
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Definition
B. 2
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following must be true in order for a stand-on vessel to take action to avoid collision by her maneuver alone?
A. she must be in sight of the give-way vessel
B. There must be risk of collision
C. She must determine that the give-way vessel is not taking appropriate action
D. all of the above |
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Definition
C. She must determine that the give-way vessel is not taking appropriate action
Answer: C, Rule 17.b. When from any cause, the vessel required to keep her course and speed finds herself so close that collision cannot be avoided by the action of the give-way vessel alone, she shall take such action as will best aid to avoid collision. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel being towed astern, where the length of the tow exceeds 200 meters, will exhibit ______.
A. two balls in a vertical line
B. a diamond shape where it can best be seen
C. a ball on each end of the tow
D. no dayshape |
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Definition
B. a diamond shape where it can best be seen
Answer: B, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen |
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Term
BOTH INTERNATIONAL & INLAND: For a stand on vessel to take action to avoid collision she shall, if possible, not ____.
A. decrease speed
B. increase speed
C. turn to port for a vessel on her port side
D. turn to starboard for a vessel on her port side |
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Definition
C. turn to port for a vessel on her port side
Answer: C, Rule 17.c.i. A power-driven vessel, if the circumstances of the case admit, not alter course to port for a vessel on her own port side. |
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Term
BOTH INTERNATIONAL & INLAND: Except where it has been determined that a risk of collision does not exist, every vessel which hears, apparently forward of her beam, the fog signal of another vessel shall _________.
A. if necessary, take all her way off
B. stop her engines
C. begin a radar plot
D. all of the above |
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Definition
A. if necessary, take all her way off
Answer: A, Rule 19.e. Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close quarters situation with another vessel forward of her beam, shall reduce her speed to the minimum which she can be kept on course. She shall, if necessary, take all her way off and, in any event, navigate with extreme caution until the danger of collision is over. |
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Term
BOTH INTERNATIONAL & INLAND: Two barges are being pushed ahead by a towboat. Which statement is true concerning lights on the barges?
A. Each vessel should show sidelights
B. Each vessel should show at least one white light
C. The barges should be lighted as separate units.
D. the barges should be lighted as one vessel |
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Definition
D. the barges should be lighted as one vessel
Answer: D, Rule 24.f. Vessels being towed alongside or pushed in a group shall be lighted as one vessel. A vessel being pushed ahead, not part of a composite unit, shall exhibit sidelights. A vessel being towed alongside shall exhibit sidelights and a sternlight. Inland rules require a special flashing light on the bow. |
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Term
BOTH INTERNATIONAL & INLAND: The rules state that a seaplane shall ______.
A. not be regarded as a vessel
B. in general, keep well clear of all vessels
C. proceed at a slower speed than surrounding vessels
D. when making way, show the lights for a vessel not under command |
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Definition
B. in general, keep well clear of all vessels
Answer: B, Rule 18.e (Int) or Rule 18.d (Inland). A seaplane on the water shall, in general, keep well clear of all vessels and avoid impeding their navigation. However, where risk of collision exists, she shall comply with the rules. |
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Term
BOTH INTERNATIONAL & INLAND: If practical, when shall a manned vessel being towed sound her fog signal?
A. immediately before the towing vessel sounds hers
B. immediately after the towing vessel sounds hers
C. As close to the mid-cycle of the towing vessel's signals as possible
D. at any time as long as the interval is correct |
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Definition
B. immediately after the towing vessel sounds hers
Answer: B, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Your tug is underway at night and NOT towing. What light(s) should your vessel show aft to other vessels coming up from astern?
A. one white light
B. Two white lights
C. One white light and one yellow light
D. one white light and two yellow lights |
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Definition
A. one white light
Answer: A, Rule 23.a. A power driven vessel underway shall exhibit a masthead light forward, a second masthead light abaft and higher this light ( A vessel less than 50 meters may not exhibit this light), sidelights, and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel conducting mineclearing operations will show ________.
A. three balls in a vertical line
B. two balls in a vertical line
C. one ball near the foremast and one ball at each fore yard
D. one diamond near the foremast head and one ball at each fore yard |
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Definition
C. one ball near the foremast and one ball at each fore yard
Answer: C, Rule 27.f. A vessel engaged in mineclearance operations shall, in addition to the lights prescribed for a power driven vessel or the lights or shape prescribed for a vessel at anchor, exhibit three all-round green lights or three balls, one near the foremast head and one at each end of the fore yard. These lights or shapes indicate that it is dangerous for another vessel to approach within 1000 meters of the mineclearance vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel sailing shall keep out of the way of all of the following vessels except a vessel ______.
A. not under command
B. engaged on pilotage duty
C. restricted in her ability to maneuver
D. engaged in fishing |
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Definition
B. engaged on pilotage duty
Answer: B, Rule 18.b. A sailing vessel shall keep out of the way of a vessel not under command, restricted in her ability to maneuver, and a vessel engaged in fishing. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning a vessel under oars?
A. she must show a sternlight
B. she is allowed to show the same lights as a sailing vessel
C. she must show a fixed all round white light
D. She must show a dayshape of a black cone |
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Definition
C. she must show a fixed all round white light
Answer: C, Rule 25.d.ii. A vessel under oars may exhibit the lights for sailing vessels, but if she does not, she shall have ready at hand a lantern showing a white light which shall be exhibited in sufficient time to prevent collision. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel is underway and fishing with trolling lines. This vessel _________.
A. must keep out of the way of sailing vessels
B. must sound a one prolonged and two short blasts signal in restricted visibility
C. is the stand-on vessel when overtaking power-driven vessels
D. all of the above |
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Definition
A. must keep out of the way of sailing vessels
Answer: A, Rule 18.a. A power driven vessel shall keep out of the way of a vessel not under command, a vessel restricted in her ability to maneuver, a vessel engaged in fishing, and sailing vessels. AND: Rule 3.d. The term "vessel engaged in fishing" means any vessel fishing with nets, lines, trawls, or other fishing apparatus which restricts maneuverability, but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict maneuverability |
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Term
BOTH INTERNATIONAL & INLAND: At night you sight a vessel displaying a single green light. This is a _______.
A. vessel at anchor
B. small motorboat underway
C. vessel drifting
D. sailing vessel |
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Definition
D. sailing vessel
Answer: D, Rule 25.a. A sailing vessel underway shall exhibit sidelights and a sternlight. You would be seeing the s/v's starboard running light. |
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Term
BOTH INTERNATIONAL & INLAND: When two power-driven vessels are crossing, which vessel is the stand-on vessel?
A. the vessel which is to starboard of the other vessel
B. the vessel which is to port of the other vessel
C. The larger vessel
D. The vessel that sounds the first whistle signal |
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Definition
A. the vessel which is to starboard of the other vessel
Answer: A, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel must exhibit forward and after masthead lights when making way?
A. a 75-meter vessel restricted in her ability to maneuver
B. a 100-meter sailing vessel
C. a 150-meter vessel engaged in fishing
D. a 45-meter vessel engaged in towing |
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Definition
A. a 75-meter vessel restricted in her ability to maneuver
Answer: A, This one is real tough, thanks to BM2 Karyn Boxwell for finding the answer. Rule 27.b.iii. A vessel restricted in her ability to maneuver, except a vessel engaged in mineclearance operations, shall exhibit, when making way through the water, masthead lights (plural), sidelights and a sternlight, in addition to the lights prescribed in subparagraph (b)(i). A 150 meter fishing vessel engaged in fishing would show green over white all-round lights (Rule 26.b.i), a single masthead light abaft and above the green over white (Rule 26.b.ii), and sidelights/sternlight (Rule 26.b.iii). |
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Term
BOTH INTERNATIONAL & INLAND: A vessel in fog has detected by radar alone a meeting vessel ahead on a collision course. In order to avoid a close quarters situation, the vessel should ________.
A. turn to port
B. turn to starboard
C. maintain course and speed and sound the danger signal
D. maintain course and speed and sound no signal |
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Definition
B. turn to starboard
Answer: B, Rule 20.c. The lights prescribed by these rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary. |
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Term
BOTH INTERNATIONAL & INLAND: A sailing vessel underway at night may show _________.
A. a red light over a green light at the masthead
B. a green light over a red light at the masthead
C. a green light over a white light
D. two red lights in a vertical line |
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Definition
A. a red light over a green light at the masthead
Answer: A, Rule 25.c. A sailing vessel underway may, in addition to sidelights and sternlight, exhibit on her mast an all-round red over an all-round green light. But these lights shall not be shown if using a single lantern combining the sidelights and sternlight) |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is a requirement for a vessel navigating near an area of restricted visibility?
A. A power-driven vessel shall have her engines ready for immediate maneuver.
B. she must sound appropriate sound signals
C. if she detects another vessel by radar, she shall determine if risk of collision exists.
D. all of the above |
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Definition
D. all of the above
Answer: D, All of these requirements are covered in the rules. |
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Term
BOTH INTERNATIONAL & INLAND: By night, you sight the lights of a vessel engaged in underwater operations. If an obstruction exists on the port side of the vessel, it will be marked by ___________.
A. a floodlight
B. two red lights in a vertical line
C. a single red light
D. any visible lights |
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Definition
B. two red lights in a vertical line
Answer: B, Rule 27.d. A vessel engaged in dredging or underwater operations, when restricted in her ability to maneuver, shall exhibit the lights for restricted in her ability of maneuver and, when an obstruction exists, exhibit two all-round red lights (or two balls) in a vertical line to indicate the side on which the obstruction exists, two all-round green lights (or two diamonds) in a vertical line to indicate the side on which another vessel may pass, and when at anchor shall not show the lights prescribed for anchored vessels. |
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Term
BOTH INTERNATIONAL & INLAND: You are in charge of a power-driven vessel in dense fog. You observe another vessel on radar who is half a mile distant on your port bow. You should ________.
A. sound the danger signal
B. exchange passing signals
C. sound one long blast
D. make no change in your fog signal |
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Definition
D. make no change in your fog signal
Answer: D, Rule 35.a In or near an area of restricted visibility, whether by day or night, a power driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel may carry her sidelights and sternlight in one combined lantern?
A. a 10-meter power-driven vessel
B. A 15-meter vessel propelled by sail and machinery
C. A 10-meter sailing vessel
D. all of the above |
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Definition
C. A 10-meter sailing vessel
Answer: C, Rule 25.b. A sailing vessel of less than 20 meters in length may combine into one lantern her sidelights and sternlight to be carried near the top of the mast where it can best be seen.. |
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Term
BOTH INTERNATIONAL & INLAND: What lights would be shown at night by a vessel which is restricted in her ability to deviate from her course?
A. three red lights in a vertical line
B. Three white lights in a vertical line
C. Three lights in a vertical line, the highest and lowest white and the middle red
D. Three lights in a vertical line, the highest and lowest red and the middle white |
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Definition
D. Three lights in a vertical line, the highest and lowest red and the middle white
Answer: D, , Rule 27.b. A vessel restricted in her ability to maneuver (except a vessel engaged in mineclearance ops) shall exhibit where they can best be seen an all-round red over white over red light, or shapes of ball over diamond over ball. When making way through the water she shall show masthead lights, sidelights and a sternlight. When at anchor, in addition to the red over white over red, appropriate anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is the stand-on vessel when two vessels crossing in fog are not in sight of one another?
A. the vessel which has the other on her own starboard side
B. The vessel which has the other on her own port side
C. The one which hears the other's fog signal first
D. Neither vessel is the stand-on vessel |
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Definition
B. The vessel which has the other on her own port side
Answer: B, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel engaged in fishing shall keep out of the way of a vessel ________.
A. under sail
B. restricted in her ability to maneuver
C. crossing a channel
D. all of the above |
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Definition
B. restricted in her ability to maneuver
Answer: B, Rule 18.c. A vessel engaged in fishing when underway shall, so far as possible, keep out of the way of a vessel not under command and a vessel restricted in her ability to maneuver. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel shall turn off her sidelights?
A. any vessel that is not under command
B. any fishing vessel that is not making way
C. any sailing vessel when becalmed
D. any vessel engaged in underwater operations |
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Definition
B. any fishing vessel that is not making way
Answer: B, Rule 26.c. A vessel engaged in fishing, other than trawling, shall exhibit an all-round red over white in a vertical line, or a shape consisting of two cones with apexes together in a vertical line. When there is outlying gear extending more than 15 meters from the vessel, an all-round white light, or a cone apex upwards, in the direction of the gear. Additionally, when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel fishing with gear extending more than 150 meters horizontally outwards will show at night _______.
A. One white light
B. two vertical white lights
C. one yellow light
D. two vertical yellow lights |
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Definition
A. One white light
Answer: A, Rule 26.c. A vessel engaged in fishing, other than trawling, shall exhibit an all-round red over white in a vertical line, or a shape consisting of two cones with apexes together in a vertical line. When there is outlying gear extending more than 15 meters from the vessel, an all-round white light, or a cone apex upwards, in the direction of the gear. Additionally, when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: In restricted visibility, a vessel which detects by radar alone the presence of another vessel shall determine if a close quarters situation is developing or risk of collision exists. If she determines risk of collision does exist, she shall ______.
A. Sound the danger signal
B. When taking action, make only course changes
C. avoid altering course toward a vessel abaft the beam
D. all of the above |
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Definition
C. avoid altering course toward a vessel abaft the beam
Answer: C, Rule 19.d. A vessel which detects by radar alone the presence of another vessel shall determine if a close-quarters situation is developing or risk of collision exists. If so, she shall take avoiding action in ample time, provided that when such action consists of an alteration of course, so far as possible shall avoid altering course to port for a vessel forward of the beam, other than for a vessel being overtaken and altering course toward a vessel abeam or abaft the beam. |
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Term
BOTH INTERNATIONAL & INLAND: A 60-meter vessel which is trawling is required to show how many white masthead lights at night?
A. 1
B. 2
C. 3
D. 4 |
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Definition
B. 2
Answer: B, Rule 26.b.i. A vessel when engaged in trawling shall exhibit at the mast an all-round green over an all-round white light (or a shape consisting of two cones with their apexes together), a masthead light abaft of and higher than the all-round green light (a vessel of less than 50 meters may not show this light), and when making way through the water, sidelights and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel servicing a pipeline during the day shall display ________.
A. three black shapes in a vertical line; the highest and lowest are balls, and the middle one is a diamond
B. three shapes in a vertical line; the highest and lowest are red balls, and the middle one is a white diamond
C. three black balls in a vertical line
D. two black balls in a vertical line |
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Definition
A. three black shapes in a vertical line; the highest and lowest are balls, and the middle one is a diamond
Answer: A, , Rule 27.b. A vessel restricted in her ability to maneuver (except a vessel engaged in mineclearance ops) shall exhibit where they can best be seen an all-round red over white over red light, or shapes of ball over diamond over ball. When making way through the water she shall show masthead lights, sidelights and a sternlight. When at anchor, in addition to the red over white over red, appropriate anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should ___________.
A. stop your engines
B. sound the danger signal at two-minute intervals
C. hold course and speed until the other vessel is sighted
D. take proper avoiding action as soon as possible |
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Definition
C. hold course and speed until the other vessel is sighted
Answer: C, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. Rule 17.a. where one of two vessels is to keep out of the way, the other shall keep her course and speed However, the latter vessel may take action to avoid collision by her maneuver alone as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning a towing vessel which is unable to deviate from her course?
A. By day, she shall carry a black cylinder shape
B. by day, she shall carry two black balls in a vertical line
C. By day, she would show the same lights as a vessel not under command
D. By day, she would show the same shapes as a vessel restricted in her ability to maneuver |
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Definition
D. By day, she would show the same shapes as a vessel restricted in her ability to maneuver
Answer: D, Rule 27.c. A vessel engaged in a towing operation which severely restricts the towing vessel and her tow in their ability to deviate from their course shall show both the lights (and shapes) for towing and the lights(and shapes) for restricted in her ability to maneuver.. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true regarding equipment for sound signals?
A. A vessel of less than 12 meters in length need not have any sound signaling equipment.
B. manual sounding of the signals must always be possible
C. any vessel over 12 meters in length must be provided with a gong
D. signals must be able to be sounded manually and automatically |
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Definition
B. manual sounding of the signals must always be possible
Answer: B, Rule 33.a. A vessel of 12 meters or more in length shall be provided with a whistle and a bell. A vessel of 100 meters or more in length shall, in addition, be provided with a gong. The bell and/or gong may be replaced by other equipment having the same respective sound characteristics, but manual sounding of the signals shall always be possible. |
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Term
BOTH INTERNATIONAL & INLAND: What is the minimum sound signaling equipment required aboard a vessel 10 meters in length?
A. any means of making an efficient sound signal
B. A bell only
C. A whistle only
D. A bell and a whistle |
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Definition
A. any means of making an efficient sound signal
Answer: A, Rule 33.a. A vessel of 12 meters or more in length shall be provided with a whistle and a bell. A vessel of 100 meters or more in length shall, in addition, be provided with a gong. The bell and/or gong may be replaced by other equipment having the same respective sound characteristics, but manual sounding of the signals shall always be possible. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel must have a gong, or other equipment which will make the sound of a gong?
A. A sailing vessel
B. any vessel over 50 meters
C. A power-driven vessel over 75 meters
D. Any vessel over 100 meters |
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Definition
D. Any vessel over 100 meters
Answer: D, Rule 3.a. The word vessels includes every description of water craft, including nondisplacement craft and seaplanes, used or capable of being used as a means of transportation on water. |
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Term
BOTH INTERNATIONAL & INLAND: While underway and in sight of another vessel, you put your engines on astern propulsion. Which statement concerning whistle signals is true?
A. you need not sound any whistle signals
B. you must sound one blast if backing to starboard
C. You must sound whistle signals only if the vessels are meeting
D. You must sound three short blasts on the whistle |
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Definition
D. You must sound three short blasts on the whistle
Answer: D, , Rule 34.a Three short blasts mean "I am operating astern propulsion" |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning the light used with whistle signals?
A. Use of such a light is required
B. it is only used to supplement short blasts of the whistle
C. The light shall have the same characteristics as a masthead light.
D. All of the above |
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Definition
B. it is only used to supplement short blasts of the whistle
Answer: B, Rule 34.b.ii. The duration of each flash shall be about 1 second. |
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Term
BOTH INTERNATIONAL & INLAND: What determines if a vessel is "restricted in her ability to maneuver"?
A. whether or not all of the vessel's control equipment is in working order
B. the vessel's draft in relation to the available depth of water
C. Whether the nature of the vessel's work limits maneuverability required by the rules
D. Whether or not the vessel is the give-way vessel in a meeting situation |
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Definition
C. Whether the nature of the vessel's work limits maneuverability required by the rules
Answer: C, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning the light used to accompany whistle signals?
A. It is only used to supplement short blasts of the whistle
B. it is mandatory to use such a light
C. the light shall have the same characteristics as a masthead light
D. all of the above |
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Definition
A. It is only used to supplement short blasts of the whistle
Answer: A, Rule 34.b.ii. The duration of each flash shall be about 1 second. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following statements is true concerning the danger signal?
A. only the stand-on vessel can sound the danger signal
B. Radio transmissions may be used in place of the danger signal
C. vessels must be in sight of each other in order to use the danger signal
D. the danger signal consists of 5 or more prolonged blasts of the whistle |
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Definition
C. vessels must be in sight of each other in order to use the danger signal
Answer: C, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel may sound the danger signal?
A. either vessel in a meeting situation
B. the give-way vessel in a crossing situation
C. A vessel at anchor
D. All of the above |
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Definition
D. All of the above
Answer: D, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: You are on watch in fog. Which of the following vessels is "in sight"?
A. a vessel that you can see from the bridge
B. A radar target of which you have determined the course and speed
C. a vessel of which you can hear the fog signal
D. All of the above |
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Definition
A. a vessel that you can see from the bridge
Answer: A, Rule 3.k (Int) or Rule 3.j (Inland). Vessels shall be deemed to be in sight of one another only when one can be observed visually from the other. |
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Term
BOTH INTERNATIONAL & INLAND: In a meeting situation, which vessel may sound the danger signal?
A. stand-on vessel
B. give-way vessel
C. either vessel
D. neither vessel |
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Definition
C. either vessel
Answer: C, Rule 34.d. When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. This signal may be supplemental by a light signal of at least five short and rapid flashes. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in a narrow channel and are being overtaken by a vessel astern. The overtaking vessel sounds a signal indicating her intentions to pass on your starboard side. If such an action appears dangerous, you should sound ___________.
A. one prolonged followed by one short blast
B. One prolonged, one short, one prolonged and one short blast in that order
C. five short and rapid blasts
D. three short and rapid blasts |
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Definition
C. five short and rapid blasts
Answer: C, Rule 34.c.ii The vessel about to be overtaken shall, if in doubt, sound the danger signal. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is a light signal authorized by the Secretary of the Navy as an additional navigational light for a ship of war?
A. flashing amber beacon for submarines
B. green masthead and yardarm lights indicating mine clearance operations
C. red-white-red lights in a vertical line for a carrier launching aircraft
D. yellow flares indicating torpedo firing exercises |
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Definition
A. flashing amber beacon for submarines
Answer: A, Rule 1 note 1 Submarines may display, as a distinctive means of identification, an intermittent flashing amber (yellow) beacon with a sequence of operation of one flash per second for three seconds followed by a three second off period. |
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Term
BOTH INTERNATIONAL & INLAND: Dayshapes shall be displayed _________.
A. from sunset to sunrise
B. at all times, whether underway or at anchor
C. by day
D. one hour before sunrise to one hour after sunset |
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Definition
C. by day
Answer: C, Rule 20.d. The rules concerning shapes shall be complied with by day. |
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Term
BOTH INTERNATIONAL & INLAND: Dayshapes shall be displayed ________.
A. between sunset and sunrise
B. between 8 am and 4 pm daily
C. during daylight hours in restricted visibility
D. during daylight hours only |
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Definition
D. during daylight hours only
Answer: D, Rule 20.d. The rules concerning shapes shall be complied with by day. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel may exhibit lights other than those prescribed by the rules as long as the additional lights _____.
A. are not the same color as either side light
B. have a lesser range of visibility than the prescribed lights
C. do not impair the visibility or distinctive character of the prescribed lights
D. all of the above |
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Definition
C. do not impair the visibility or distinctive character of the prescribed lights
Answer: C, Rule 20.b. The rules concerning lights shall be complied with from sunset to sunrise, and during such times no other lights shall be exhibited, except such lights as cannot be mistaken for the lights specified in these rules or do not impair their visibility or distinctive character, or interfere with the keeping of a proper lookout. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel may exhibit lights other than those prescribed by the rules as long as the additional lights _____.
A. do not interfere with the keeping of a proper look-out
B. do not impair the visibility or distinctive character of the prescribed lights
C. cannot be mistaken for the lights specified elsewhere in the Rules
D. All of the above |
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Definition
D. All of the above
Answer: D, Rule 20.b. The rules concerning lights shall be complied with from sunset to sunrise, and during such times no other lights shall be exhibited, except such lights as cannot be mistaken for the lights specified in these rules or do not impair their visibility or distinctive character, or interfere with the keeping of a proper lookout. |
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Term
BOTH INTERNATIONAL & INLAND: The sternlight shall be positioned such that it will show from dead astern to how many degrees on each side of the stern of the vessel?
A. 135
B. 112.5
C. 67.5
D. 22.5 |
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Definition
C. 67.5
Answer: C, Rule 21.c. "Sternlight" means a white light placed as nearly as practicable at the stern showing an unbroken light over an arc of the horizon of 135 degrees which shows the light 67.5 degrees on each side of the vessel. |
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Term
BOTH INTERNATIONAL & INLAND: You see a red sidelight bearing NW (315*). That vessel may be heading ______.
A. northwest (315*)
B. east (090*)
C. southwest (225*)
D. west (270*) |
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Definition
C. southwest (225*)
Answer: C. |
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Term
BOTH INTERNATIONAL & INLAND: What does the word "breadth" mean?
A. greatest breadth
B. molded breadth
C. Breadth on the main deck
D. Breadth at the load waterline |
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Definition
A. greatest breadth
Answer: A, Rule 3.j (Int) or Rule 3.i (Inland) The words "length" and "breadth" of a vessel means her length overall and greatest breadth. |
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Term
BOTH INTERNATIONAL & INLAND: If underway in low visibility and sounding fog signals, what changes would you make in the fog signal immediately upon losing the power plant?
A. begin sounding one prolonged blast followed by two short blasts at two-minute intervals
B. Begin sounding one prolonged blast followed by three short blasts at two minute intervals
C. Begin sounding two prolonged blasts at two-minute intervals
D. No change should be made in the fog signal |
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Definition
C. Begin sounding two prolonged blasts at two-minute intervals
Answer: C, Rule 35.b A power driven vessel underway, but stopped and making no way through the water, shall sound at intervals of not more than 2 minutes, 2 prolonged blasts in succession with an interval of about 2 seconds between them. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel engaged in fishing while at anchor shall sound a fog signal of _______.
A. one prolonged and three short blasts at one minute intervals
B. a rapid ringing of the bell for five seconds at one minute intervals
C. one prolonged and two short blasts at two minute intervals
D. a sounding of the bell and gong at one minute intervals |
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Definition
C. one prolonged and two short blasts at two minute intervals
Answer: C, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is the sound signal for a vessel 75 meters in length, restricted in her ability to maneuver, at anchor?
A. one prolonged blast followed by two short blasts at intervals of not more than 2 minutes
B. five second ringing of a bell at intervals of not more than one minute
C. four short blasts at intervals of not more than two minutes
D. five second ringing of a bell and five second sounding of a gong at intervals of not more than 1 minute |
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Definition
A. one prolonged blast followed by two short blasts at intervals of not more than 2 minutes
Answer: A, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel sounds the same fog signal when underway or at anchor?
A. a sailing vessel
B. a vessel constrained by her draft
C. a vessel restricted in her ability to maneuver
D. A vessel not under command |
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Definition
C. a vessel restricted in her ability to maneuver
Answer: C, Rule 35.c. A vessel not under command, restricted in her ability to maneuver (whether underway or at anchor), a sailing vessel, a vessel engaged in fishing (whether underway or at anchor), and a vessel engaged in towing or pushing shall sound at intervals of not more than 2 minutes one prolonged blast followed by two short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel would sound a fog signal consisting of the ringing of a bell for 5 seconds?
A. a vessel engaged in fishing at anchor
B. a vessel restricted in its ability to maneuver at anchor
C. A sailing vessel at anchor
D. all of the above |
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Definition
C. A sailing vessel at anchor
Answer: C, Rule 35.c. & d. (Int) or 35.c. (Inland) F/V and vessels restricted in ability to maneuver, when at anchor, signal one prolonged followed by two short blasts every two minutes. Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A 200-meter vessel is aground in fog. Which signal is optional?
A. A bell signal
B. A whistle signal
C. A gong signal
D. All of the above are mandatory |
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Definition
B. A whistle signal
Answer: B, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is NOT a vessel "restricted in her ability to maneuver"?
A. a vessel laying mat revetments for bank protection along a channel
B. A vessel towing with limited maneuverability due to a large unwieldy tow
C. a deep-draft vessel that can only navigate in a dredged channel
D. a towing vessel underway with a fuel barge alongside and taking on fuel |
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Definition
C. a deep-draft vessel that can only navigate in a dredged channel
Answer: C, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel |
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Term
BOTH INTERNATIONAL & INLAND: A 200-meter vessel is aground in restricted visibility. Which signal is optional?
A. a whistle signal
B. a gong signal
C. a bell signal
D. all of the above are optional |
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Definition
A. a whistle signal
Answer: A, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning fog signals?
A. all fog signals for sailing vessels are to be given at intervals of not more than one minute
B. A vessel aground may sound a whistle signal
C. a vessel not under command sounds the same fog signal as a vessel towed
D. the identity signal of a pilot vessel is the only fog signal sounded by such a vessel |
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Definition
B. A vessel aground may sound a whistle signal
Answer: B, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: While underway in fog, you hear a vessel ahead sound two blasts on the whistle. You should ____.
A. Not sound any whistle signals until the other vessel is sighted
B. sound only fog signals until the other vessel is sighted
C. sound whistle signals only if you change course
D. sound two blasts and change course to the left |
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Definition
B. sound only fog signals until the other vessel is sighted
Answer: B, Maneuvering signals are not to be used unless in sight. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in fog when you hear the rapid ringing of a bell for five seconds followed by the sounding of a gong for five seconds. This signal indicates a vessel __________.
A. engaged in pair trawling
B. fishing while making no way through the water
C. more than 100 meters in length, at anchor
D. engaged on pilotage duty |
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Definition
C. more than 100 meters in length, at anchor
Answer: C, Rule 35.g (Int). and Rule 35.f (Inland) Vessels at anchor shall, at intervals of not more than 1 minute, ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the bow and, immediately after the ringing of the bell, the gong shall be sounded rapidly for about 5 seconds near the stern. A vessel at anchor may also sound one short, one prolonged, and one short blast to give warning of her position and of the possibility of collision to an approaching vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A tug is towing three barges in line in restricted visibility. The second vessel of the tow should sound __________.
A. one prolonged and two short blasts
B. one prolonged and three short blasts
C. one short blast
D. no fog signal |
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Definition
D. no fog signal
Answer: D, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is true when operating in fog and other vessels are detected by radar?
A. The bearings should be repeatedly checked because a large bearing change will insure that you avoid collision
B. you should determine the course and speed of all radar contacts.
C. you should maneuver before the other vessel is in sight if the CPA is close aboard.
D. Long range scanning will provide early warning of all other vessels within the radar's range |
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Definition
C. you should maneuver before the other vessel is in sight if the CPA is close aboard.
Answer: C, Rule 19.d. A vessel which detects by radar alone the presence of another vessel shall determine if a close-quarters situation is developing or risk of collision exists. If so, she shall take avoiding action in ample time, provided that when such action consists of an alteration of course, so far as possible shall avoid altering course to port for a vessel forward of the beam, other than for a vessel being overtaken and altering course toward a vessel abeam or abaft the beam. |
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Term
BOTH INTERNATIONAL & INLAND: What is the identity fog signal which may be sounded by a vessel engaged on pilotage duty?
A. 2 short blasts
B. 3 short blasts
C. 4 short blasts
D. 5 short blasts |
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Definition
C. 4 short blasts
Answer: C, Rule 35.j (Int) or 35.i. (Inland) A pilot vessel when engaged on pilotage duty may, in addition to the sound signals for a power driven vessel underway making way, underway not making way, or at anchor, may sound an identity signal consisting of four short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: What does the word "length" refer to?
A. length between the perpendiculars
B. length overall
C. waterline length
D. register length |
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Definition
B. length overall
Answer: B, Rule 3.j (Int) or Rule 3.i (Inland) The words "length" and "breadth" of a vessel means her length overall and greatest breadth. |
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Term
BOTH INTERNATIONAL & INLAND: A fog signal of one prolonged blast followed by four short blasts would mean the presence of a _______.
A. vessel being towed
B. power-driven pilot vessel on station underway
C. fishing vessel trawling
D. vessel at anchor warning of her location |
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Definition
B. power-driven pilot vessel on station underway
Answer: B, Rule 35.j (Int) or 35.i. (Inland) A pilot vessel when engaged on pilotage duty may, in addition to the sound signals for a power driven vessel underway making way, underway not making way, or at anchor, may sound an identity signal consisting of four short blasts. |
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Term
BOTH INTERNATIONAL & INLAND: You are heading due east (090*) and observe a vessel's red sidelight on your port beam. The vessel may be heading _________.
A. northwest (315*)
B. southeast (135*)
C. northeast (045*)
D. southwest (225*) |
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Definition
D. southwest (225*)
Answer: D |
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Term
BOTH INTERNATIONAL & INLAND: As defined in the rules, a towing light is a yellow light having the same characteristics as a(n) _____.
A. special flashing light
B. anchor light
C. stern light
D. masthead light |
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Definition
C. stern light
Answer: C, Rule 21.d. "Towing light" means a yellow light having the same characteristics as the sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: The masthead light may be located at other than the fore and aft centerline on a vessel _____.
A. less than 50 meters in length
B. less than 20 meters in length
C. of special construction
D. engaged in trolling |
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Definition
C. of special construction
Answer: C, Rule 1.e. When the government determines that a vessel of special construction cannot comply fully with the provisions of these rules, the vessel shall comply with all other provisions as possible. |
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Term
BOTH INTERNATIONAL & INLAND: In complying with the rules, of what must the mariner take due regard?
A. limited backing power of his vessel
B. radar information about nearby vessels
C. the occupation of the other vessel, if known
D. All of the above |
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Definition
D. All of the above
Answer: D |
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Term
BOTH INTERNATIONAL & INLAND: A flashing light is a light that ________.
A. flashes at regular intervals at a frequency of 120 flashes or more per minute
B. is yellow in color
C. is visible over an arc of the horizon of not less than 180* nor more than 225*
D. all of the above |
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Definition
A. flashes at regular intervals at a frequency of 120 flashes or more per minute
Answer: A, Rule 21.f. Flashing light means a light flashing at regular intervals at a frequency of 120 flashes or more per minute. |
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Term
BOTH INTERNATIONAL & INLAND: While underway at night you are coming up on a vessel from astern. What light (s) would you expect to see?
A. a sternlight only
B. two masthead lights
C. both sidelights and the sternlight
D. sidelights only |
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Definition
A. a sternlight only
Answer: A, Rule 13.b. A vessel shall be deemed to be overtaking when coming up with another vessel from a direction more than 22.5 degrees abaft her beam; that is, in such a position with reference to the vessel she is overtaking, that at night she would be able to see only the sternlight of that vessel but neither of her sidelights. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel would exhibit sidelights when underway and not making way?
A. A vessel engaged in fishing
B. A vessel not under command
C. A vessel engaged in dredging
D. A power-driven vessel |
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Definition
D. A power-driven vessel
Answer: D, Rule 23.a. A power driven vessel underway shall exhibit a masthead light forward, a second masthead light abaft and higher this light ( A vessel less than 50 meters may not exhibit this light), sidelights, and a sternlight. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel would exhibit sidelights when underway and not making way?
A. A vessel trawling
B. A vessel not under command
C. A pilot vessel
D. A vessel engaged in dredging |
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Definition
C. A pilot vessel
Answer: C, , Rule 29.a A vessel engaged on pilotage duty shall exhibit an all-round white over all-round red at the masthead, when underway a sidelights and a sternlight, and anchor lights when at anchor. When not engaged on pilotage duty shall exhibit the lights or shapes prescribed for a similar vessel of her length. |
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Term
BOTH INTERNATIONAL & INLAND: You are on a vessel that cannot comply with the spacing requirement for masthead lights due to the nature of the vessel's function. What is required in this situation?
A. the vessel must carry only the lights that comply with the rules: the others may be omitted
B. the vessels lights must comply as closely as possible, as determined by her government
C. the vessel must be altered to permit full compliance with the rules
D. an all-round light should be substituted for the after masthead light and the sternlight |
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Definition
B. the vessels lights must comply as closely as possible, as determined by her government
Answer: B, Rule 1.e. When the government determines that a vessel of special construction cannot comply fully with the provisions of these rules, the vessel shall comply with all other provisions as possible. |
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Term
BOTH INTERNATIONAL & INLAND: What equipment for fog signals is required for a vessel 20 meters in length?
A. whistle and bell only
B. whistle only
C. bell only
D. Whistle, bell and gong |
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Definition
A. whistle and bell only
Answer: A, Rule 33.a. A vessel of 12 meters or more in length shall be provided with a whistle and a bell. A vessel of 100 meters or more in length shall, in addition, be provided with a gong. The bell and/or gong may be replaced by other equipment having the same respective sound characteristics, but manual sounding of the signals shall always be possible. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel would exhibit sidelights when underway and not making way?
A. a vessel not under command
B. a vessel towing by pushing ahead
C. A vessel engaged in dredging
D. a vessel trawling |
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Definition
B. a vessel towing by pushing ahead
Answer: B, Rule 24.a. A power driven vessel when towing astern shall exhibit two masthead lights in a vertical line (when the length of the tow, measuring from the stern of towing vessel to the stern of the tow exceeds 200 meters then three masthead lights in a vertical line), sidelights, a sternlight, a towing light in a vertical line above the sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is a "vessel restricted in her ability to maneuver"?
A. A deep-draft vessel that can only navigate in a dredged channel
B. A vessel fishing with a bottom trawl that must remain on course
C. A large tanker that is being towed as a dead ship to dry-dock
D. a vessel laying revetment mats to provide bank protection along a channel |
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Definition
D. a vessel laying revetment mats to provide bank protection along a channel
Answer: D Rule 3.g. The term Restricted in Ability to maneuver means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: What dayshape should a vessel being towed exhibit if the tow EXCEEDS 200 meters?
A. A cone, apex downward
B. A cone, apex upward
C. A diamond
D. A ball |
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Definition
C. A diamond
Answer: C, Rule 24.e. A vessel or object being towed shall exhibit sidelights, a sternlight, and when the length of tow exceeds 200 meters, a diamond shape where it can best be seen |
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Term
BOTH INTERNATIONAL & INLAND: A sailing vessel underway at night may show __________.
A. a green light over a red light
B. a red light over a white light
C. two white lights at the stern
D. None of the above |
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Definition
D. None of the above
Answer: D, Rule 25.c. A sailing vessel underway may, in addition to sidelights and sternlight, exhibit on her mast an all-round red over an all-round green light. But these lights shall not be shown if using a single lantern combining the sidelights and sternlight) |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel when anchored at night, would not be required to show anchor lights?
A. A vessel engaged in underwater operations
B. A vessel not under command
C. A vessel engaged on pilotage duty
D. A vessel engaged in survey operations |
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Definition
A. A vessel engaged in underwater operations
Answer: A, Rule 27.d. A vessel engaged in dredging or underwater operations, when restricted in her ability to maneuver, shall exhibit the lights for restricted in her ability of maneuver and, when an obstruction exists, exhibit two all-round red lights (or two balls) in a vertical line to indicate the side on which the obstruction exists, two all-round green lights (or two diamonds) in a vertical line to indicate the side on which another vessel may pass, and when at anchor shall not show the lights prescribed for anchored vessels. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following vessels, when anchored at night, would not be required to show anchor lights?
A. A power-driven vessel
B. A vessel engaged in survey operations
C. A vessel engaged on pilotage duty
D. A vessel engaged in fishing |
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Definition
D. A vessel engaged in fishing
Answer: D, Rule 26. Vessels engaged in fishing and trawling shall exhibit only the lights and shapes prescribed in Rule 26, which have no provisions for anchor lights. |
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Term
BOTH INTERNATIONAL & INLAND: What is the minimum sound signaling equipment required aboard a vessel 14 meters in length?
A. Any means of making an efficient sound signal
B. A bell only
C. A whistle only
D. A bell and a whistle |
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Definition
D. A bell and a whistle
Answer: D, Rule 33.a. A vessel of 12 meters or more in length shall be provided with a whistle and a bell. A vessel of 100 meters or more in length shall, in addition, be provided with a gong. The bell and/or gong may be replaced by other equipment having the same respective sound characteristics, but manual sounding of the signals shall always be possible. |
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Term
BOTH INTERNATIONAL & INLAND: A tug is towing three unmanned barges in line in fog. The third vessel of the tow should sound ____.
A. no fog signal
B. one short blast
C. one prolonged and three short blasts
D. one prolonged, one short, and one prolonged blast |
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Definition
A. no fog signal
Answer: A, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following signals may at some time be exhibited by a vessel trawling?
A. two white lights in a vertical line
B. a red light over a white light in a vertical line
C. two fixed yellow lights in a vertical line
D. Any of the above |
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Definition
A. two white lights in a vertical line
Answer: A, Annex II, 85.3.a. Vessels when engaged in trawling, whether using demersal or pelagic gear, may exhibit two white lights in a vertical line when shooting nets, one white light over one red light in a vertical line when hauling their nets, and two red lights in a vertical line when the net has come fast on an obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: Additional light signals are provided in the Annexes to the Rules for vessels
A. not under command
B. engaged in fishing
C. engaged in towing
D. under sail |
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Definition
B. engaged in fishing
Answer: B, Annex II |
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Term
BOTH INTERNATIONAL & INLAND: Vessels engaged in fishing may show the additional signals described in Annex II to the Rules when they are _______.
A. trolling
B. fishing in a traffic separation zone
C. in close proximity to other vessels engaged in fishing
D. in a narrow channel |
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Definition
C. in close proximity to other vessels engaged in fishing
Answer: C, Annex II |
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Term
BOTH INTERNATIONAL & INLAND: A distress signal _______.
A. consists of 5 or more short blasts of the fog signal apparatus
B. consists of the raising and lowering of a large white flag
C. may be used separately or with other distress signals
D. is used to indicate doubt about another vessel's intentions |
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Definition
C. may be used separately or with other distress signals
Answer: C, Annex IV, 87.1 |
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Term
BOTH INTERNATIONAL & INLAND: A vessel may use any sound or light signals to attract the attention of another vessel as long as _____.
A. white lights are not used
B. red and green lights are not used
C. the signal cannot be mistaken for a signal authorized by the rules
D. the vessel signals such intentions over the radiotelephone |
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Definition
C. the signal cannot be mistaken for a signal authorized by the rules
Answer: C, Rule 36 If necessary to attract the attention of another vessel, any vessel may make light or sound signals that cannot be mistaken for any signal authorized elsewhere in these rules, or may direct the beam of her searchlight in the direction of the danger, in such a way as not to embarrass any vessel. |
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Term
BOTH INTERNATIONAL & INLAND: One of the signals, other than a distress signal, that can be used by a vessel to attract attention is a(n) ____.
A. red star shell
B. searchlight
C. burning barrel
D. orange smoke signal |
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Definition
B. searchlight
Answer: B, Rule 36 If necessary to attract the attention of another vessel, any vessel may make light or sound signals that cannot be mistaken for any signal authorized elsewhere in these rules, or may direct the beam of her searchlight in the direction of the danger, in such a way as not to embarrass any vessel. |
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Term
BOTH INTERNATIONAL & INLAND: When should the fog signal of a vessel being towed be sounded?
A. when the vessel being towed is unmanned
B. when the vessel being towed is manned
C. all towed vessels, manned or unmanned, must sound fog signals
D. towed vessels are never required to sound fog signals. |
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Definition
B. when the vessel being towed is manned
Answer: B, Rule 35.e (Int) or Rule 35.d (Inland) A vessel towed, or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel engaged in mineclearance operations shows special identity lights ______.
A. instead of the masthead lights
B. which mean that other vessel should not approach within 1000 meters
C. that are 225-degree green lights
D. All of the above |
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Definition
B. which mean that other vessel should not approach within 1000 meters
Answer: B, Rule 27.f. A vessel engaged in mineclearance operations shall, in addition to the lights prescribed for a power driven vessel or the lights or shape prescribed for a vessel at anchor, exhibit three all-round green lights or three balls, one near the foremast head and one at each end of the fore yard. These lights or shapes indicate that it is dangerous for another vessel to approach within 1000 meters of the mineclearance vessel. |
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Term
BOTH INTERNATIONAL & INLAND: You are about to cross a narrow channel when you see an approaching vessel that can only be navigated safely within the channel. You should _______.
A. cross the channel as you have the right of way
B. cross only if the vessel is in the channel is approaching on your port side
C. not cross the channel if you might impede the other vessel
D. sound the danger signal |
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Definition
C. not cross the channel if you might impede the other vessel
Answer: C, Rule 9.d. A vessel shall not cross a narrow channel or fairway if such crossing impedes the passage of a vessel which can safely navigate only within that channel or fairway. The latter vessel shall use the danger signal if in doubt as to the intention of the crossing signal. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is a light signal authorized by the secretary of the navy as an additional navigational light for a ship of war?
A. Two yellow lights in a vertical line for a carrier launching aircraft
B. Green masthead and yardarm lights for a vessel engaged in mineclearing operations
C. flashing amber beacon for submarines
D. Yellow flares indicating torpedo firing exercises |
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Definition
C. flashing amber beacon for submarines
Answer: C, Rule 1 note 1 Submarines may display, as a distinctive means of identification, an intermittent flashing amber (yellow) beacon with a sequence of operation of one flash per second for three seconds followed by a three second off period. |
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Term
BOTH INTERNATIONAL & INLAND: According to the Nav Rules, you may depart from the rules when _____.
A. you do so to avoid immediate danger
B. no vessels are visible on radar
C. you are in a close quarters situation
D. out of sight of land |
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Definition
A. you do so to avoid immediate danger
Answer: A, Rule 2.b. In construing and complying with these rules due regard shall be had to all dangers of navigation and collision and to any special circumstances, including the limitations of the vessels involved, which may make a departure from these rules necessary to avoid collision. |
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Term
BOTH INTERNATIONAL & INLAND: The rules state that vessels may depart from the requirements of the rules when ______.
A. operating in restricted visibility
B. operating in a narrow channel
C. necessary to avoid immediate danger
D. the Master enters it in the ship's log |
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Definition
C. necessary to avoid immediate danger
Answer: C, Rule 2.b. In construing and complying with these rules due regard shall be had to all dangers of navigation and collision and to any special circumstances, including the limitations of the vessels involved, which may make a departure from these rules necessary to avoid collision. |
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Term
BOTH INTERNATIONAL & INLAND: The rules state that the vessels may depart from the rules when ______.
A. there are other vessels in the vicinity
B. operating in a traffic separation scheme
C. engaged in a situation involving more than two vessels
D. necessary to avoid immediate danger |
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Definition
D. necessary to avoid immediate danger
Answer: D, Rule 2.b. In construing and complying with these rules due regard shall be had to all dangers of navigation and collision and to any special circumstances, including the limitations of the vessels involved, which may make a departure from these rules necessary to avoid collision. |
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Term
BOTH INTERNATIONAL & INLAND: The term "restricted visibility", when used in the Rules, refers to ______.
A. situations when you can see vessels on radar that you cannot see visually
B. visibility of less than half a mile
C. any condition where visibility is restricted
D. visibility where you cannot see shore |
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Definition
C. any condition where visibility is restricted
Answer: C, Rule 3.l (Int) or Rule 3.k. (Inland). Restricted visibility means any condition in which visibility is restricted by fog, mist, falling snow, heavy rainstorms, sandstorms or any other similar causes |
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Term
BOTH INTERNATIONAL & INLAND: The navigation rules define a "vessel not under command" as a vessel which ____.
A. from the nature of her work is unable to keep out of the way of another vessel
B. does not have a proper look-out
C. by taking action contrary to the Rules has created a special circumstance situation
D. through some exceptional circumstance is unable to maneuver as required by the Rules |
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Definition
D. through some exceptional circumstance is unable to maneuver as required by the Rules
Answer: D, Rule 3.f. The term "vessel not under command" means a vessel which, through some exceptional circumstance, is unable to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which craft is a "power-driven vessel" under the Rules of the Road?
A. An auxiliary sailing vessel, using her engine
B. A canoe propelled by a small outboard motor
C. a trawler on her way to the fishing grounds
D. All of the above |
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Definition
D. All of the above
Answer: D, Rule 3.b. The term power driven vessel means any vessel propelled by machinery. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel is "in sight" of another vessel when she _______.
A. can be observed visually or by radar
B. has determined that risk of collision exists
C. can be seen well enough to determine her heading
D. can be observed visually from the other vessel |
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Definition
D. can be observed visually from the other vessel
Answer: D, Rule 3.k. (Int) or Rule 3.j. (Inland). Vessels shall be deemed to be in sight of one another only when one can be observed visually from the other. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning a "vessel engaged in fishing"?
A. The vessel is classified as "restricted in her ability to maneuver"
B. Her gear will not affect the vessel's maneuverability
C. The vessel may be using nets, lines, or trawls
D. She sounds the same fog signal as a vessel underway but stopped and making no way |
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Definition
C. The vessel may be using nets, lines, or trawls
Answer: C, Rule 3.d. The term "vessel engaged in fishing" means any vessel fishing with nets, lines, trawls, or other fishing apparatus which restricts maneuverability, but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict maneuverability |
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Term
BOTH INTERNATIONAL & INLAND: To be considered "engaged in fishing" under the rules, a vessel must be _______.
A. power-driven
B. showing lights or shapes for a vessel restricted in its ability to maneuver
C. using nets
D. using fishing apparatus which restricts maneuverability |
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Definition
D. using fishing apparatus which restricts maneuverability
Answer: D, Rule 3.d. The term "vessel engaged in fishing" means any vessel fishing with nets, lines, trawls, or other fishing apparatus which restricts maneuverability, but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict maneuverability |
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Term
BOTH INTERNATIONAL & INLAND: The word "vessel", in the Rules, includes ________.
A. a barge permanently affixed to the shore
B. nondisplacement craft
C. a drilling unit attached to the outer continental shelf
D. all of the above |
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Definition
B. nondisplacement craft
Answer: B, Rule 3.a. The word vessels includes every description of water craft, including nondisplacement craft and seaplanes, used or capable of being used as a means of transportation on water. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is, by definition, unable to keep out of the way of another vessel?
A. vessel engaged in fishing
B. vessel not underway
C. sailing vessel
D. vessel restricted in her ability to maneuver |
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Definition
D. vessel restricted in her ability to maneuver
Answer: D Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel "restricted in her ability to maneuver" is one which _______.
A. through some exceptional circumstance is unable to maneuver as required by the rules
B. from the nature of her work is unable to maneuver as required by the rules
C. due to adverse weather conditions is unable to maneuver as required by the rules
D. has lost steering and is unable to maneuver |
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Definition
B. from the nature of her work is unable to maneuver as required by the rules
Answer: B, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: What determines if a vessel is "restricted in her ability to maneuver"?
A. Whether or not all of the vessel's control equipment is in working order
B. The vessel's draft in relation to the available depth of water
C. Whether the vessel is operating in a narrow channel
D. The nature of the vessel's work, limiting maneuverability required by the rules |
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Definition
D. The nature of the vessel's work, limiting maneuverability required by the rules
Answer: D, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel is considered to be "restricted in her ability to maneuver" under the Rules if she is _____.
A. at anchor
B. mineclearing
C. engaged in fishing
D. engaged in towing |
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Definition
B. mineclearing
Answer: B, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: All of the following vessels are "restricted in their ability to maneuver" except a vessel _____.
A. laying a pipeline
B. Not under command
C. mineclearing
D. dredging |
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Definition
B. Not under command
Answer: B, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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BOTH INTERNATIONAL & INLAND: A vessel transferring cargo while underway is classified by the Rules as a vessel _____.
A. restricted in her ability to maneuver
B. in special circumstances
C. not under command
D. constrained by her draft |
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Definition
A. restricted in her ability to maneuver
Answer: A, Rule 3.g. The term "vessel restricted in her ability to maneuver" means a vessel which from the nature of her work is restricted in her ability to maneuver as required by these rules and is therefore unable to keep out of the way of another vessel. |
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Term
BOTH INTERNATIONAL & INLAND: Which vessel is "underway" according to the Rules?
A. a vessel made fast to a single point mooring buoy
B. a vessel engaged in towing, not making way
C. A pilot vessel at anchor
D. A vessel which has run aground |
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Definition
B. a vessel engaged in towing, not making way
Answer: B, Rule 3.i (Int) or Rule 3.h (Inland). The word "underway" means that a vessel is not at anchor, or made fast to the shore, or aground. |
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Term
BOTH INTERNATIONAL & INLAND: According to the Rules, to what does the work "length" refer?
A. length between perpendiculars
B. length along the waterline
C. length overall
D. registered length |
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Definition
C. length overall
Answer: C, Rule 3.j (Int) or Rule 3.i (Inland) The words "length" and "breadth" of a vessel means her length overall and greatest breadth. |
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Term
BOTH INTERNATIONAL & INLAND: What does the word "breadth" mean in the Rules?
A. breadth on the uppermost continuous deck
B. molded breadth
C. greatest breadth
D. breadth at the load waterline |
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Definition
C. greatest breadth
Answer: C, Rule 3.j (Int) or Rule 3.i (Inland) The words "length" and "breadth" of a vessel means her length overall and greatest breadth. |
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Term
BOTH INTERNATIONAL & INLAND: In determining "safe speed", the Rules list all of the following as factors which must be taken into account EXCEPT the _________.
A. limitations of radar equipment
B. presence of background lights at night
C. maximum horsepower of your vessel
D. maneuverability of your vessel |
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Definition
C. maximum horsepower of your vessel
Answer: C, Rule 6 Every vessel shall at all times proceed at a safe speed so that she can take proper and effective action to avoid collision and be stopped within a distance appropriate to the prevailing circumstances and conditions. |
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Term
BOTH INTERNATIONAL & INLAND: Which factor is listed in the rules as one which must be taken into account when determining safe speed?
A. the construction of the vessel
B. the experience of vessel personnel
C. the location of vessels detected by radar
D. all of the above |
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Definition
C. the location of vessels detected by radar
Answer: C, Rule 6.b.v. Vessels with operational radar shall consider the number, location, and movement of vessels detected by radar in determining a safe speed. |
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Term
BOTH INTERNATIONAL & INLAND: The rules state that certain factors are to be taken into account when determining safe speed. One of the factors stated is the _________.
A. aids to navigation that are available
B. maximum attainable speed of your vessel
C. temperature
D. current |
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Definition
D. current
Answer: D, Rule 6.a.v. All vessels shall take into account the state of wind, sea, and current, and the proximity of navigational hazards, when determining a safe speed. |
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Term
BOTH INTERNATIONAL & INLAND: Safe speed is defined as that speed where ______.
A. you can stop within your visibility range
B. the vessel is not subject to vibrations
C. you are travelling slower than surrounding vessels
D. you can take proper and effective action to avoid collision |
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Definition
D. you can take proper and effective action to avoid collision
Answer: D, Rule 6 Every vessel shall at all times proceed at a safe speed so that she can take proper and effective action to avoid collision and be stopped within a distance appropriate to the prevailing circumstances and conditions. |
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Term
BOTH INTERNATIONAL & INLAND: The rules state that the risk of collision shall be deemed to exist _______.
A. whenever two vessels are on opposite courses
B. whenever a vessel crosses ahead of the inteded track of another vessel
C. if the bearing of an approaching vessel does not appreciably change
D. if one vessel approaches another so as to be overtaking |
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Definition
C. if the bearing of an approaching vessel does not appreciably change
Answer: C, Rule 7.d. Risk of collision shall be deemed to exist if the compass bearing of an approaching vessel does not appreciably change, and such risk may sometimes exist even when an appreciable bearing change is evident, particularly when approaching a very large vessel or a tow, or when approaching a vessel at very close range. |
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Term
BOTH INTERNATIONAL & INLAND: In which situation would you consider a risk of collision to exist?
A. a vessel is one point on your starboard bow, range increasing, bearing changing slightly to the night
B. a vessel is broad on your starboard bow, range decreasing, bearing changing rapidly to the right
C. A vessel is two points abaft your port beam, range decreasing, bearing constant
D. A vessel is on your starboard quarter, range increasing, bearing is constant |
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Definition
C. A vessel is two points abaft your port beam, range decreasing, bearing constant
Answer: C |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is true when operating in fog and other vessels are detected by radar?
A. the bearings should be repeatedly checked because a large bearing change will insure that you avoid collision
B. you should maneuver before another vessel is in sight if a close quarters situation is developing
C. You should determine the course and speed of all radar contacts at six minute intervals
D. long-range scanning will provide early warning of all other vessels within the radar's range. |
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Definition
B. you should maneuver before another vessel is in sight if a close quarters situation is developing
Answer: B, Rule 19.d. A vessel which detects by radar alone the presence of another vessel shall determine if a close-quarters situation is developing or risk of collision exists. If so, she shall take avoiding action in ample time, provided that when such action consists of an alteration of course, so far as possible shall avoid altering course to port for a vessel forward of the beam, other than for a vessel being overtaken and altering course toward a vessel abeam or abaft the beam. |
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Term
BOTH INTERNATIONAL & INLAND: You are approaching another vessel on crossing courses. She is about one mile distant and is on your starboard bow. You believe she will cross ahead of you but she sounds a whistle signal of five short blasts. You should __________.
A. answer the signal and hold course and speed
B. reduce speed slightly
C. initiate a passing signal that will allow for a half mile clearance
D. make a large course change, and slow down if necessary |
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Definition
D. make a large course change, and slow down if necessary
Answer: D, |
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Term
BOTH INTERNATIONAL & INLAND: You are approaching another vessel on crossing courses. She is approximately half a mile distant and is presently on your starboard bow. You believe she will cross ahead of you but she sounds a whistle signal of five short blasts. You should __________
A. make a signal of one prolonged blast
B. make a large course change
C. reduce speed slightly to make sure she will have room to pass
D. wait for another whistle signal from the other vessel |
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Definition
B. make a large course change
Answer: B, Rule 8.c. If there is sufficient sea room, alteration of course alone may be the most effective action to avoid a close-quarters situation provided that it is made in good time, is substantial and does not result in another close quarters situation. |
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Term
BOTH INTERNATIONAL & INLAND: Under the rules, any vessel may slacken her speed, stop, or reverse her engines to _____.
A. create a crossing situation
B. allow more time to assess the situation
C. attract the attention of another vessel
D. all of the above |
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Definition
B. allow more time to assess the situation
Answer: B, Rule 8.e. If necessary to avoid collision or allow more time to assess the situation, a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following is a requirement for any action taken to avoid collision?
A. When in sight of another vessel, any action taken must be accompanied by sound signals
B. any action taken must not result in another close quarters situation
C. any actions taken must include a speed change
D. all of the above |
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Definition
B. any action taken must not result in another close quarters situation
Answer: B, Rule 8.c. If there is sufficient sea room, alteration of course alone may be the most effective action to avoid a close-quarters situation provided that it is made in good time, is substantial and does not result in another close quarters situation. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel proceeding along a narrow channel shall ________.
A. avoid crossing the channel
B. not overtake any vessels within the channel
C. keep as close as possible to the edge of the channel on her port side
D. when nearing a bend in the channel, sound a long blast of the whistle |
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Definition
D. when nearing a bend in the channel, sound a long blast of the whistle
Answer: D, Rule 9.f & Rule 34.e A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. |
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Term
BOTH INTERNATIONAL & INLAND: When underway in a channel, you should ______.
A. stay near the middle of the channel
B. keep to the starboard side of any vessels you meet
C. exchange whistle signals with any other vessels in the channel
D. keep to the side of the channel which lies to starboard |
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Definition
D. keep to the side of the channel which lies to starboard
Answer: D, Rule 9.a. A vessel proceeding along the course of a narrow channel or fairway shall keep as near to the outer limit of the channel or fairway which lies on her starboard side |
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Term
BOTH INTERNATIONAL & INLAND: A sailing vessel is meeting a vessel engaged in fishing in a narrow channel. Which statement is true?
A. each vessel should move to the edge of the channel on her port side
B. the vessels are required to exchange signals
C. the fishing vessel is directed not to impede the passage of the sailing vessel
D. Each vessel should be displaying signals for a vessel constrained by her draft |
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Definition
C. the fishing vessel is directed not to impede the passage of the sailing vessel
Answer: C, Rule 9.c. A vessel engaged in fishing shall not impede the passage of any other vessel navigating within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: A vessel engaged in mineclearance operations shows special identity lights ________.
A. in addition to the lights required for a power-driven vessel
B. which means that other vessels should not approach closer than 500 meters on either side of the vessel
C. That are green and show through an arc of the horizon of 225 degrees
D. all of the above |
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Definition
A. in addition to the lights required for a power-driven vessel
Answer: A, Rule 27.f. A vessel engaged in mineclearance operations shall, in addition to the lights prescribed for a power driven vessel or the lights or shape prescribed for a vessel at anchor, exhibit three all-round green lights or three balls, one near the foremast head and one at each end of the fore yard. These lights or shapes indicate that it is dangerous for another vessel to approach within 1000 meters of the mineclearance vessel. |
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Term
BOTH INTERNATIONAL & INLAND: You are underway in thick fog. Which of the following statements is true?
A. The radar must be on and used for scanning
B. the lookout is not required if the radar is on
C. fog signals are only required when a vessel is detected by radar
D. The radar should be kept on a short range scale for maximum detection of vessels close aboard |
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Definition
A. The radar must be on and used for scanning
Answer: A, Rule 7.b Proper use shall be made of radar equipment if fitted and operational, including long-range scanning to obtain early warning of risk of collision and radar plotting or equivalent systematic observation of detected objects.. |
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Term
BOTH INTERNATIONAL & INLAND: A sailing vessel is meeting a vessel engaged in fishing in a narrow channel. Which statement is true?
A. the fishing vessel must sound the danger signal
B. the fishing vessel shall not impeded the passage of the sailing vessel
C. each vessel should move to the edge of the channel on her port side
D. both vessels should be displaying the signal for a vessel restricted in her ability to maneuver |
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Definition
B. the fishing vessel shall not impeded the passage of the sailing vessel
Answer: B, Rule 9.c. A vessel engaged in fishing shall not impede the passage of any other vessel navigating within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following vessels shall not impede the passage of a vessel which can safely navigate only within a narrow channel or fairway?
A. a vessel of less than 50 meters in length
B. a sailing vessel
C. a vessel servicing an aid to navigation
D. All of the above |
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Definition
B. a sailing vessel
Answer: B, , Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: Your 15-meter vessel is crossing a narrow channel and a large cargo vessel to starboard is within the channel and crossing your course. You should _______.
A. hold your course and speed
B. sound the danger signal
C. keep out of the way of the cargo vessel
D. not cross the channel |
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Definition
C. keep out of the way of the cargo vessel
Answer: C, , Rule 9.b. A vessel of less than 20 meters in length, or a sailing vessel, shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway. |
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Term
BOTH INTERNATIONAL & INLAND: If two sailing vessels are running free with the wind on the same side, which one must keep clear of the other?
A. the one with the wind closest abeam
B. the one to windward
C. The one to leeward
D. the one that sounds the first whistle signal |
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Definition
B. the one to windward
Answer: B, Rule 12.a. When two sailing vessels are approaching one another so as to involve risk of collision one shall keep out of the way of the other. If the each has the wind on different sides, the vessel which has the wind on her port shall keep out of the way of the other. If both have the wind on the same side, the one which is to windward shall keep out of the way of the vessel which is to leeward. If a vessel with the wind on the port side sees a vessel to windward and cannot determine what side she has her wind on, she shall keep out of the way of the other. |
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Term
BOTH INTERNATIONAL & INLAND: In many cases, the rules state that if there is any doubt as to whether a certain situation exists, it shall be considered to exist by the vessel in doubt. This principle applies to which situation?
A. a designation as the stand-on vessel
B. A crossing situation
C. Risk of collision
D. All of the above |
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Definition
C. Risk of collision
Answer: C, Rule 7.a. Every vessel shall use all available means appropriate to the prevailing circumstances and conditions to determine if risk of collision exists. If there is any doubt such risk shall be deemed to exist. |
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Term
BOTH INTERNATIONAL & INLAND: Which statement is true concerning two sailing vessels approaching each other?
A. the vessel making the most speed is the give-way vessel
B. A sailing vessel overtaking another is the give-way vessel
C. A sailing vessel seeing another to leeward on an undetermined tack shall hold her course
D. all of the above |
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Definition
B. A sailing vessel overtaking another is the give-way vessel
Answer: B, , Rule 13.a. Any vessel overtaking any other shall keep out of the way of the vessel being overtaken. |
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Term
BOTH INTERNATIONAL & INLAND: Sailing vessels have the right of way over power-driven vessels except ______.
A. in a crossing situation
B. when they are making more speed than the power-driven vesel
C. when they are overtaking a power-driven vessel
D. on the Inland Waters of the United State |
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Definition
C. when they are overtaking a power-driven vessel
Answer: C, Rule 13.a. Any vessel overtaking any other shall keep out of the way of the vessel being overtaken. |
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Term
BOTH INTERNATIONAL & INLAND: In which situation do the Rules require both vessels to change course?
A. Any time the danger signal is sounded
B. When two power-driven vessels are crossing and it is apparent to the stand-on vessel that the give-way vessel is not taking appropriate action
C. When two power-driven vessels are meeting head-on
D. All of the above |
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Definition
C. When two power-driven vessels are meeting head-on
Answer: C, Rule 14.a Unless otherwise agreed, when two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision, each shall alter her course to starboard so that each shall pass on the port side of the other. |
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Term
BOTH INTERNATIONAL & INLAND: Your vessel is NOT making way, but is not in any way disabled. Another vessel is approaching you on your starboard beam. Which statement is true?
A. Your vessel is obligated to stay out of the way
B. The other vessel must give way, since your vessel is stopped
C. you should be showing lights or shapes for a vessel not under command
D. you should be showing the lights or shapes for a vessel restricted in her ability to maneuver |
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Definition
A. Your vessel is obligated to stay out of the way
Answer: A, Rule 15.a. When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. |
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Term
BOTH INTERNATIONAL & INLAND: If you are the stand-on vessel in a crossing situation, you may take action to avoid collision by your maneuver alone. When may this action be taken?
A. as soon as you determine that risk of collision exists
B. only when you have reached extremis
C. When it becomes apparent to you that the give-way vessel is not taking appropriate action
D. When you determine that your present course will cross ahead of the other vessel |
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Definition
C. When it becomes apparent to you that the give-way vessel is not taking appropriate action
Answer: C, Rule 17.a.ii Where one of two vessels is to keep out of the way of another, the other shall keep her course and speed. The latter vessel may, however, take action to avoid collision by her maneuver alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these rules. |
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Term
BOTH INTERNATIONAL & INLAND: In a crossing situation on open waters, a sailing vessel shall keep out of the way of all the following vessels EXCEPT a vessel _______.
A. not under command
B. restricted in her ability to maneuver
C. engaged in towing
D. fishing |
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Definition
C. engaged in towing
Answer: C |
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Term
BOTH INTERNATIONAL & INLAND: Which of the following would be a "special circumstance" under the rules?
A. vessel at anchor
B. two vessel s meeting
C. speed in fog
D. more than two vessels crossing |
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Definition
D. more than two vessels crossing
Answer: D |
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