A.dockmaster
B.dock captain
C.lockmaster
D.lock foreman
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A.speed begins to drop
B.stops
C.receives ice damage
D.becomes icebound
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
最新試題
As the weather was worsening and wind force rising to 8，my vessel（）were yawing within forty degrees of the compass.
When operating in an area where sea ice and icebergs are present，which statement is TRUE? （）
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（）.
In most cases，when a large merchant vessel enters shallow water at high speed the（）.
Before entering an ice area，the ship should be（）.
A vessel which is being assisted by an icebreaker should indicate that she is ready to cast off the towline by（）.
In selecting a tug for moving a vessel，consideration should be given to its（）.
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 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? （）