A.smelling the bottom
B.squatting
C.bank suction
D.bank cushion
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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
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
最新試題
A vessel is underway with a work stage rigged over the side. A seaman may work on the stage，but only when（）.
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 or object being towed astern shall display a(n)（）.
A vessel is “l(fā)isted” when it is（）.
A vessel may use any sound or light signals to attract the attention of another vessel as long as（）.
A vessel is “in sight” of another vessel when（）.
A vessel hearing a fog signal forward of her beam has not determined if risk of collision exists. She shall reduce speed to（）.
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 showing a green light over a white light in a vertical line above the level of the sidelights is（）.
A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 312°. What action should be taken to remove this error during compass adjustment? （）