A.decrease in capabilities of radar
B.decrease in displacement
C.adverse effect on trim
D.loss of stability
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A.back your engines
B.stop your engines and drift
C.answer with one prolonged blast
D.sound the danger signal
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A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream. Which vessel has the right of way? （）
For operations in pack ice，a vessel should（）.
On a single-screw vessel the stern frame（）.
A vessel proceeding along the course of a narrow channel shall keep as near to the outer limitof the channel which lies on her starboard side as it is safe and practicable.Which one of the followings does the statement express?（）.
A vessel proceeding along the bank of a river or channel has the tendency to（）.
In order to reduce your wake in a narrow channel you should（）.
When pushing ahead，wires leading from the quarters of the after outboard barges to the bow of a towboat（）.
Before entering an ice area，the ship should be（）.
Two vessels are abreast of each other and passing port to port in a confined waterway. What should you expect as your bow approaches the screws of the other vessel? （）
A vessel proceeding along the course of a narrow channel or fairway shall keep as near to the （）limit of the channel or fairway which lies on her（）side as is safe and practicable.