单项选择题
A.a positive righting moment B.an increase in KM C.a negative restoring force D.a positive restoring force
In a river subject to tidal currents，the best time to d...
单项选择题In a river subject to tidal currents，the best time to dock a ship without the assistance of tugs is（）.
A.at high water B.when there is a following current C.at slack water D.at flood
If your vessel is dragging her anchor in a strong wind，...
单项选择题If your vessel is dragging her anchor in a strong wind，you should（）.
A.shorten the scope of anchor cable B.increase the scope of anchor cable C.put over the sea anchor D.put over a stern anchor
If you were being assisted by an icebreaker and he sent...
单项选择题If you were being assisted by an icebreaker and he sent you the single letter Q，he would be telling you（）.
A.that he has his engines in reverse B.that he is shortening the distance between vessels C.to shorten the distance between vessels D.that his vessel is healthy
