A.increase
B.decrease
C.change only if the vessel comes about on the opposite tack
D.not change
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A.propeller velocity
B.speed of advance
C.wake distribution
D.wake fraction
A.barometer
B.wind vane
C.anemometer
D.thermometer
A.during the day，three balls in a vertical line
B.during the day，three shapes，the highest and lowest being balls and the middle being a diamond
C.when making way at night，two all-round red lights，sidelights，and a sternlight
D.when making way at night，masthead lights，sidelights，and a sternlight
A.a vessel restricted in her ability to maneuver
B.a vessel not under command
C.a vessel engaged in fishing
D.a vessel constrained by her draught
A.smelling the bottom
B.squatting
C.bank suction
D.bank cushion
最新試題
One major advantage of the round turn maneuver in a man overboard situation is that it（）.
One advantage of chain over wire rope for a tow bridle is that chain（）.
If a towing vessel and her tow are severely restricted in their ability to change course，they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is（）.
If a vessel under tow starts jumping on its tow line，the most appropriate action to alleviate the condition is to（）.
Once a towline is connected between the towing vessel and the disabled vessel，the towing vessel should（）.
A vessel travelling 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（）.
In order to back a right-handed，single-screw vessel in a straight line，you will probably need to use（）.
The distance that a vessel travels from the time that the order to put engines full astern until the vessel is dead in the water is known as（）.
The catenary（）.
In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.