varies depending upon the bearing used
is the angular difference between magnetic north and compass north
is published on the compass rose on most nautical charts
is the angular difference between geographic and magnetic meridians
第1题：
When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed，the watch officer should record the results ______.
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2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：
If a magnetic compass is not affected by any magnetic field other than the Earth’s which statement is TRUE?______.
A.Compass error and variation are equal
B.Compass north will be true north
C.Variation will equal deviation
D.There will be no compass error
第5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6题：
Compass deviation is caused by ______.
A.magnetism from the earth’s magnetic field
B.misalignment of the compass
C.magnetism within the vessel
D.a dirty compass housing
第7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8题：
Which one of the followings is incorrect about magnetic compass?______.
A.The magentic compass is compulsory on my vessel
B.The magentic compass is prone to error
C.The magentic compass is always placed inside steel constructions
D.The magentic compass needs to be calibrated to compensate for local magnetic distortion
第9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10题：
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