A.speed begins to drop
B.stops
C.receives ice damage
D.becomes icebound
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A.displaying code letter Y (Yankee)
B.sounding five short blasts on his whistle
C.displaying code numeral 5
D.sounding one prolonged blast on his whistle
A.remains fully obliged
B.has no obligation
C.is not necessarily
D.is exempted
A.diving operations
B.dredging
C.fishing
D.mineclearance operations
A.avoid collision
B.allow more time to assess the situation
C.be stopped in an appropriate distance
D.All of the above
A.only the sternlight of the vessel
B.a sidelight and one masthead light of the vessel
C.only a sidelight of the vessel
D.any lights except the masthead lights of the vessel
最新試題
For operations in pack ice，a vessel should（）.
A towing vessel should be on the crest of a wave at the same time as its tow and in the trough at the same time. The term used to describe this is（）.
When pushing ahead，wires leading from the quarters of the after outboard barges to the bow of a towboat（）.
A vessel shall be deemed to be overtaking when she can see at night（）.
All persons or vessels within the lock area，including the lock approach channels，come under the authority of the（）.
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 which is being assisted by an icebreaker should indicate that she is ready to cast off the towline by（）.
Any vessel shall，if the circumstances of the case admit，avoid（）in a narrow channel.
If a tow sinks in shallow water，you should（）.
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? （）