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單項(xiàng)選擇題

When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision,they shall be deemed to be in（）.

A.head-on situation
B.crossing situation
C.overtaking situation
D.close-quarters situation

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單項(xiàng)選擇題

Chart/Publication correction record Card system ensures that every chart is properly corrected（）.

A.in use
B.prior to use
C.after use
D.When chart received on board

單項(xiàng)選擇題

What is the distance from the bottom of a wave trough to the top of a wave crest?（）

A.Wave length
B.Wave height
C.Wave breadth
D.wave depth

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