A.being moored for a long time on one heading
B.being struck by lighting
C.steaming from the north magnetic hemisphere to the south magnetic hemisphere
D.loading a homogenous magnetic cargo such as steel plate，iron bars，etc
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A.nonmagnetic
B.weatherproof
C.corrosion resistant
D.capable of being permanently affixed to the vessel
A.like magnetic poles attract
B.unlike magnetic poles repel
C.unlike poles attract
D.the poles of the compass line up with the geographic poles of the earth
A.north magnetic pole
B.south magnetic pole
C.magnetic prime vertical meridian
D.magnetic equator
A.compass north
B.the direction of the vessel's head
C.magnetic north
D.a relative bearing taken with an azimuth circle
A.always shows true north direction
B.indicates the vessel's heading
C.is always parallel to the vessel's transom
D.is located on the compass card
最新試題
While in drydock your vessel will be belt-gauged.This process involves（）.
By convention，the north seeking ends of a compass’ magnets are colored（）.
The variation for most given areas undergoes（）change，the amount of which is also noted on charts.
What is the name of the movable，radial guide line used to measure direction on a radar?（）
When adjusting a magnetic compass for error，a deviation table should be made（）.
When a vessel changes course from one cardinal heading to another cardinal heading whilea djusting the compass，which action should be taken?（）
Variation is the angular measurement between（）.
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 statement about the Flinders bar of the magnetic compass is CORRECT（）.