A.the vessel's heading
B.sea conditions
C.seasons
D.the vessel's position
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A.compass error
B.true heading
C.variation
D.deviation
A.geographic pole and the magnetic pole
B.lubber's line and true north
C.horizontal and the magnetic line of force
D.compass heading and the magnetic heading
A.varies depending upon the bearing used
B.is the angular difference between magnetic north and compass north
C.is published on the compass rose on most nautical charts
D.is the angular difference between geographic and magnetic meridians
A.into the wind
B.away in fire and smoke
C.directly to the standby boat
D.directly to the nearest land
A.follow-up system
B.transmitter
C.phantom element
D.azimuth motor
最新試題
When adjusting a magnetic compass for error，a deviation table should be made（）.
When crossing the magnetic equator the（）.
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 magnetism in the various structures of a ship changing as a result of cruising，vibration，or aging is termed（）.
When adjusting a magnetic compass using the fore-and-aft permanent magnets，you should（）.
While in drydock your vessel will be belt-gauged.This process involves（）.
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.
What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）
When relieving the helm，the new helmsman should know the（）.
The line which connects the points of zero magnetic dip is（）.