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
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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
最新試題
Which statement about the Flinders bar of the magnetic compass is CORRECT（）.
The most accurate method of determining gyrocompass error while underway is by（）.
When adjusting a magnetic compass using the fore-and-aft permanent magnets，you should（）.
Which statement about the gyrocompass is FALSE（）.
Variation in a compass is caused by（）.
The variation for most given areas undergoes（）change，the amount of which is also noted on charts.
What is the name of the movable，radial guide line used to measure direction on a radar?（）
What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）
A ship under construction or major repair will acquire permanent magnetism due to（）while sitting stationary in the earth’s magnetic field.
Variation is the angular measurement between（）.