單項選擇題

What is an advantage of the magnetic compass aboard vessels?（）

A.Compass error is negligible at or near the earth's magnetic poles
B.It does not have to be checked as often
C.It is reliable due to it's essential simplicity
D.All points on the compass rose are readily visible

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單項選擇題

What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）

A.Quadrantal spheres
B.Heeling magnets
C.Athwartships magnets
D.Fore-and-aft magnets

單項選擇題

Variation is the angular measurement between（）.

A.compass north and magnetic north
B.compass north and true north
C.magnetic meridian and the geographic meridian
D.your vessel's heading and the magnetic meridian

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What is an advantage of the magnetic compass aboard vessels?（）

你可能感興趣的試題

What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）

Variation is the angular measurement between（）.

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