A.damping error
B.ballistic deflection
C.quadrantal error
D.speed error
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A.needles are nearly in line with the meridian
B.vessel is near the magnetic poles
C.variation is near zero
D.vessel is near the magnetic equator
A.induced magnetism in vertical soft iron
B.induced magnetism in horizontal soft iron
C.permanent magnetism in ship's steel
D.vessel's inclination from the vertical
A.variation
B.deviation
C.compass error
D.bearing error
A.increases with latitude，being maximum at the geographic poles
B.decreases with latitude，being maximum at the geographic equator
C.is greatest when a vessel is near the Earth's magnetic equator
D.remains the same at all latitudes
A.variation
B.deviation
C.compass error
D.drift
最新試題
When changing from a compass course to a true course you should apply（）.
When adjusting a magnetic compass using the fore-and-aft permanent magnets，you should（）.
Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west（）.
Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south（）.
Which statement about the gyrocompass is FALSE（）.
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?（）
Variation is the angular measurement between（）.
The quadrantal spheres are used to（）.
Which compensates for errors introduced when the vessel heels over（）.