第1题
Deviation in a compass is caused by the ______.
A.vessel’s geographic position
B.vessel’s heading
C.earth’s magnetic field
D.influence of the magnetic materials of the vessel
第2题
If the compass heading and magnetic-heading are the same then ______.
A.the deviation has been offset by the variation
B.there is something wrong with the compass
C.the compass is being influenced by nearby metals
D.there is no deviation on that heading
第3题
The compass error of a magnetic compass that has no deviation is ______.
A.zero
B.equal to variation
C.eliminated by adjusting the compass
D.constant at any geographical location
第4题
Which statement about the Flinders bar of the magnetic compass is CORRECT ________.
A.It compensates for the error caused by the vertical component of the Earth's magnetic field
B.It compensates for error caused by the heeling of a vessel
C.It compensates for quadrantal deviation
D.It is only needed in equatorial waters
第5题
A.in the vessel's Official Logbook
B.on the compass deviation card
C.in the compass deviation log
D.on a Napier diagram
第6题
Deviation is the angle between the ______.
A.true meridian and the axis of the compass card
B.true meridian and the magnetic meridian
C.magnetic meridian and the axis of the compass card
D.axis of the compass card and the degaussing meridian
第7题
Compass error is equal to the ______.
A.deviation minus variation
B.variation plus compass course
C.combined variation and deviation
D.difference between true and magnetic heading
第8题
Heeling error is defined as the change of deviation for a heel of ______.
A.2° while the vessel is on an intercardinal heading
B.1° while the vessel is on a compass heading of 000°
C.2° and is constant on all headings
D.1° while the vessel is on a compass heading of 180°
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