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 not under command making way at night would show（）.
A vessel showing a rigid replica of the International Code flag “A” is engaged in（）.
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 hearing a fog signal forward of her beam has not determined if risk of collision exists. She shall reduce speed to（）.
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 engaged in fishing，and at anchor，shall show（）.
A vessel towing a barge astern would show，at the stern（）.
A vessel is considered to be “restricted in her ability to maneuver” under the Rules if she is （）.
A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall，when making way，exhibit（）.
A vessel is carrying three lights in a vertical line. The highest and lowest of these are red and the middle light is white. Which statement is always TRUE? （）