A.nonmagnetic
B.weatherproof
C.corrosion resistant
D.capable of being permanently affixed to the vessel
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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
A.deviation
B.variation
C.compass error
D.dip
最新試題
What is the basic principle of the magnetic compass（）.
Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south（）.
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（）.
The variation for most given areas undergoes（）change，the amount of which is also noted on charts.
When crossing the magnetic equator the（）.
Variation in a compass is caused by（）.
Which compensates for errors introduced when the vessel heels over（）.
Any piece of metal on becoming magnetized will develop regions of concentrated magnetism called（）.
When adjusting a magnetic compass for error，a deviation table should be made（）.