单项选择题
A.to ventilate the hold B.to separate the cargo C.to replace shifting boards D.to facilitate stowage
When two power-driven vessels are meeting on reciprocal...
单项选择题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
Chart/Publication correction record Card system ensures...
单项选择题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
What is the distance from the bottom of a wave trough t...
单项选择题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
