在南半球当冷锋过境时,通常真风向由。
A. 东～东南风转南～西南风
B. 南～西南风转北～西北风
C. 北～西北风转南～西南风
D. 东～东北风转北～西北风
Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic
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
Your radar is set on a true motion display．Which of the following will NOT appear to move
A. Echoes from a buoy
B. Own ship's marker
C. Echo from a ship on the same course at the same speed
D. Echo from a ship on a reciprocal course at the same speed
Your ARPA has automatic speed inputs from the log．Due to currents，the log is indicating a
A. The generated CPA will be less than the actual CPA
B. The generated TCPA will be later than the actual TCPA
C. The range of initial target acquisition will be less than normal
D. The targets true course vector will be in error
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