A.the masthead lights for a towing vessel
B.the lights for a vessel restricted in its ability to maneuver
C.sidelights，stern light and towing light
D.All of the above
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A.only a stern light
B.a towing light above the stern light
C.two towing lights in a vertical line
D.two white lights in a vertical line
A.maintain course and speed
B.alter course to give a wide clearance
C.report the whale's position to the Canadian Coast Guard
D.All of the above
A.diving operations
B.dredging
C.fishing
D.mineclearance operations
A.engaged in underwater construction
B.under sail and power
C.a pilot vessel
D.trawling
A.three black shapes in a vertical line; the highest and lowest are balls，and the middle one is a diamond
B.three shapes in a vertical line; the highest and lowest are red balls，and the middle one is a white diamond
C.three black balls in a vertical line
D.two black balls in a vertical line
最新試題
A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 317°. What action should be taken to remove this error during compass adjustment? （）
A vessel traveling down a narrow channel，especially if the draft is nearly equal to the depth of the water，may set off the nearer side. This effect is known as（）.
A vessel has a charter party for one voyage to carry a full load of manganese from Durban，South Africa，to Baltimore，Maryland，at a stipulated rate per ton. Which type of contract is involved? （）
A vessel is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is（）.
A vessel is “l(fā)isted” when it is（）.
A vessel is heading magnetic east and its magnetic compass indicates a heading of 086°. Which action should be taken to remove this error during compass adjustment?（）
A vessel is overtaking when she can see which light(s) of a vessel ahead?（）
A vessel servicing a pipeline during the day shall display（）.
A vessel is to make a voyage between New York and San Juan，Puerto Rico，and return. The crew should be signed on（）.
A vessel or object being towed astern shall display a(n)（）.