A.shows a light with varying lengths of the lighted period
B.shows a light that changes color
C.marks an alternate lesser-used channel
D.is used as a replacement for another light
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A.dockmaster
B.dock captain
C.lockmaster
D.lock foreman
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
最新試題
In order to reduce your wake in a narrow channel you should（）.
Any vessel shall，if the circumstances of the case admit，avoid（）in a narrow channel.
A vessel the passage of which is not to be impeded（）to comply with this Rule when the two vessels are approaching one another so as to involve risk of collision.
A vessel showing a rigid replica of the International Code flag A is engaged in（）.
The proximity of pack ice may be indicated by（）.
For operations in pack ice，a vessel should（）.
A vessel proceeding along a narrow channel shall（）.
On a twin-screw，twin-rudder vessel，the most effective way to turn in your own water，with no way on，is to put（）.
When operating in an area where sea ice and icebergs are present，which statement is TRUE? （）
A vessel which is being assisted by an icebreaker should indicate that she is ready to cast off the towline by（）.