A.diving operations
B.dredging
C.fishing
D.mineclearance operations
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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
A.not under command
B.engaged on pilotage duty
C.restricted in her ability to maneuver
D.engaged in fishing
A.forward masthead light
B.after masthead light
C.stern light
D.All of the above
A.two red lights at night and two black balls during daylight
B.two red lights at night and three black balls during daylight
C.three red lights at night and two black balls during daylight
D.three red lights at night and three black balls during daylight
最新試題
A vessel is entering port “A” for the first time and has a Pilot conning the vessel. The Master is unsure that the Pilot is taking sufficient action to prevent a collision. What should the Master do? （）
A vessel is equipped with twin propellers，both turning outboard with the engines half ahead. If there is no wind or current and the rudders are amidships，what will happen?（）
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 northwest and its magnetic compass indicates a heading of 317°. What action should be taken to remove this error during compass adjustment? （）
A vessel towing a barge astern would show，at the stern（）.
A vessel servicing a pipeline during the day shall display（）.
A vessel is underway with a work stage rigged over the side. A seaman may work on the stage，but only when（）.
A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.
A vessel sighting a northern right whale dead ahead should（）.