A.will add to
B.will subtract from
C.may add to or subtract from
D.will not change
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A.an annual
B.a constant
C.a variable
D.an unstable
A.Remove deviation on the intercardinal headings
B.Remove deviation on the cardinal compass headings
C.Remove heeling error
D.Compensate for induced magnetism in vertical soft iron
A.nonmagnetic
B.weatherproof
C.corrosion resistant
D.capable of being permanently affixed to the vessel
A.Comparing the gyro azimuth of a celestial body with the computed azimuth of the body
B.Comparing the gyro heading with the magnetic compass heading
C.Determining from the chart the course made good between celestial fixes
D.It cannot be determined accurately at sea due to drift of unknown currents
A.permanent magnetism
B.subpermanent magnetism
C.induced magnetism
D.variable magnetism
最新試題
By convention，the north seeking ends of a compass’ magnets are colored（）.
A ship under construction or major repair will acquire permanent magnetism due to（）while sitting stationary in the earth’s magnetic field.
Any piece of metal on becoming magnetized will develop regions of concentrated magnetism called（）.
Variation is the angular measurement between（）.
Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south（）.
In more recent years，（）has been used by civilians in many new ways to determine positions，such as in automobile and boat navigation，hiking，emergency rescue，and precision agriculture and mining.
Which statement about the Flinders bar of the magnetic compass is CORRECT（）.
The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval（）.
What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）
While in drydock your vessel will be belt-gauged.This process involves（）.