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Crewman Part III
Navigation
29
Other
Professional
02/13/2006

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Cards

Term
one degree of latitude is ______ NM
Definition
60
Term
one minute of latitude is ____ NM
Definition
1
Term
Three things on the compass rose
Definition
Magnetic Direction

True Direction

Variation
Term
Three things on Chart Title Block
Definition
unit of depth measurement

Chart title

Type of projection
Term
What is slanted Roman lettering used for on a chart?
Definition
Items affected by tidal change
Term
What is vertical roman lettering for on a chart?
Definition
Things that are not affected by tidal change
Term
Which side of the channel is a can buoy on when leaving a harbor?
Definition
right
Term
What color are can buoys
Definition
green
Term
What color are can buoys
Definition
green
Term
Which numbers are on can buoys?
Definition
odd
Term
Which side of the channel is a nun buoy on when leaving a harbor
Definition
left
Term
what color are nun buoys?
Definition
red
Term
which numbers are on nun buoys?
Definition
even
Term
what is the chart symbol for a buoy?
Definition
a diamond and a small circle
Term
What does a lighted day mark look like on a chart?
Definition
an exclamation point
Term
What does a lighted buoy look like on a chart?
Definition
It has a red cricle at the base
Term
What does a landmark look like on a chart?
Definition
A circle with a dot in the middle
Term
variation
Definition
the difference betwen true and magnetic measured in degrees
Term
deviation
Definition
the amount of deflection infuenced by a vessel and its electronics.
Term
applying compass error
Definition
Can Dead Men Vote Twice At Election (Compass) (Deviation) (Magnetic) (Variation) (True) (Add) (Easterly error)
Term
Converting true course to compass course
Definition
True Virtue Makes Dull Company After Wedding (True) (Variation) (Magnetic) (Deviation) (Compass)

add westerly errors
Term
Converting from Relative to True
Definition
take vessel heading and add it to the relative bearing of your target unless it happens to equal a number greater than 360°.  In that case, subtract 360° to get the true bearing
Term
Distance, Speed, and Time
Definition
D = S x T/60

S = 60D/T

T = 60D/S
Term
what is the symbol for a visual fix
Definition
a cricle
Term
what is the symbol for an electronic fix
Definition
a triangle
Term
what is the symbol for a DR
Definition
semicricle and time
Term
what is the symbol for an estimated position
Definition
A rectangle and the time
Term
Three minute rule
Definition
Distance traveled in yards in 3 minutes = Ship’s speed in knots x 100
Term
Six minute rule
Definition
Distance traveled in nm in six minutes = Ship’s speed in knots x 1/10
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