A.divisional parts
B.coefficients
C.fractional parts
D.equations
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A.compass error
B.latitude
C.variation
D.deviation
A.precession
B.earth rate
C.gyroscopic inertia
D.gravity effect
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.reduce the variation as much as possible
B.reduce the deviation as much as possible
C.reduce the magnetic dip as much as possible
D.allow the compass bowl to swing freely on its gimbals
A.a collision with another vessel
B.being moored on a constant heading for a long period of time
C.being struck by lightning
D.All of the above
最新試題
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 compensates for errors introduced when the vessel heels over（）.
When a vessel changes course from one cardinal heading to another cardinal heading whilea djusting the compass，which action should be taken?（）
The Flinders bar on a magnetic compass compensates for the（）.
When crossing the magnetic equator the（）.
Which statement about the gyrocompass is FALSE（）.
The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is（）.
Any piece of metal on becoming magnetized will develop regions of concentrated magnetism called（）.
The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval（）.
When adjusting a magnetic compass using the fore-and-aft permanent magnets，you should（）.