单项选择题
A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.
A.danger，stay away
B.all is clear，it is safe to pass
C.all is clear，it is safe to approach
D.a distress signal
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相关考题
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单项选择题
A flooded lifeboat on board a vessel would adversely affect the vessel’s stability by（）.
A.increasing the righting moment
B.decreasing the vessel's displacement
C.increasing the reserve buoyancy
D.shifting the CG（center of gravity）off center -
单项选择题
A crew member has just fallen overboard off your port side．Which action should you take （）.
A.immediately put the rudder over hard right
B.immediately put the rudder over hard left
C.immediately put the engines astern
D.wait until the stern is well clear of the man and then put the rudder over hard right -
单项选择题
A certificated lifeboatman assigned to command the lifeboat should（）.
A.be the first individual to board the craft
B.drain the hydraulic pressure before lowering the craft
C.have a list of the persons assigned to the lifeboat
D.All of the above
