单项选择题
The lubber’s line on a magnetic compass indicates（）.
A.compass north
B.the direction of the vessel's head
C.magnetic north
D.a relative bearing taken with an azimuth circle
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相关考题
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单项选择题
The lubber’s line of a magnetic compass（）.
A.always shows true north direction
B.indicates the vessel's heading
C.is always parallel to the vessel's transom
D.is located on the compass card -
单项选择题
The horizontal angle between the magnetic meridian and the north-south line of the magnetic compass is（）.
A.deviation
B.variation
C.compass error
D.dip -
单项选择题
The gyrocompass error resulting from your vessel’s movement in OTHER than an east-west direction is called（）.
A.damping error
B.ballistic deflection
C.quadrantal error
D.speed error
