The horizontal angle between the magnetic meridian and the north-south line of the magnetic compass is（）.

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

点击查看答案&解析

The greatest directive force is exerted on the magnetic compass when the（）.

A.needles are nearly in line with the meridian
B.vessel is near the magnetic poles
C.variation is near zero
D.vessel is near the magnetic equator

点击查看答案&解析