A.Its accuracy remains the same at all latitudes
B.It seeks the true meridian
C.It can be used near the Earth's magnetic poles
D.If an error exists，it is the same on all headings
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A.It compensates for the error caused by the vertical component of the Earth's magnetic field
B.It compensates for error caused by the heeling of a vessel
C.It compensates for quadrantal deviation
D.It is only needed in equatorial waters
A.Heeling magnet
B.Flinders bar
C.Fore-and-aft magnets
D.All of the above can be set on magnetic east or magnetic west headings
A.Quadrantal spheres
B.Heeling magnets
C.Flinders bar
D.Fore-and-aft magnets
A.The soft iron spheres on the arms of the binnacle
B.Magnets placed in trays inside the binnacle
C.A single vertical magnet beneath the compass
D.The Flinders bar
A.Course per magnetic steering compass
B.Gyro error
C.Variation
D.Maximum rudder angle previously used
最新試題
When crossing the magnetic equator the（）.
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（）.
A vessel is heading magnetic east and its magnetic compass indicates a heading of 086°.Which action should be taken to remove this error during compass adjustment（）.
What is an advantage of the magnetic compass aboard vessels?（）
When a magnetic compass is not in use for a prolonged period of time it should（）.
What is the name of the movable，radial guide line used to measure direction on a radar?（）
What is the basic principle of the magnetic compass（）.
The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is（）.
Variation in a compass is caused by（）.