單項選擇題Magnetic dip is a measurement of the angle between the（）.

A.geographic pole and the magnetic pole
B.lubber's line and true north
C.horizontal and the magnetic line of force
D.compass heading and the magnetic heading


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1.單項選擇題Magnetic compass deviation（）.

A.varies depending upon the bearing used
B.is the angular difference between magnetic north and compass north
C.is published on the compass rose on most nautical charts
D.is the angular difference between geographic and magnetic meridians

2.單項選擇題Knowing the compass heading that is 90°to the side of a ship will enable the operator of a survival craft to initially steer（）.

A.into the wind
B.away in fire and smoke
C.directly to the standby boat
D.directly to the nearest land

3.單項選擇題Indications of the master gyrocompass are sent to remote repeaters by the（）.

A.follow-up system
B.transmitter
C.phantom element
D.azimuth motor

5.單項選擇題If the gyrocompass error is east，what describes the error and the correction to be made to gyrocompass headings to obtain true headings?（）

A.The readings are too low (small numerically) and the amount of the error must be added to the compass to obtain true
B.The readings are too low and the amount of the error must be subtracted from the compass to obtain true
C.The readings are too high (large numerically) and the amount of the error must be added to the compass to obtain true
D.The readings are too high and the amount of the error must be subtracted from the compass to obtain true