A.red light over a white light
B.green light over a white light
C.yellow light over a red light
D.white light over a green light
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A.smelling the bottom
B.squatting
C.bank suction
D.bank cushion
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
最新試題
A vessel is to make a voyage between New York and San Juan，Puerto Rico，and return. The crew should be signed on（）.
（）is due，in spite of that the salvage services have been rendered by or to vessel belonged to the same owner.
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 sailing shall keep out of the way of all of the following vessels except a vessel （）.
A vessel is “in sight” of another vessel when（）.
A vessel may use any sound or light signals to attract the attention of another vessel as long as（）.
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 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 showing a rigid replica of the International Code flag “A” is engaged in（）.