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
The effect known as bank cushion acts in which of the following ways on a single-screw vessel proceeding along a narrow channel? （）
Most of your vessel’s superstructure is forward. How will the vessel lie when drifting with no way on?（）.
In twin-screw engine installations while going ahead，maneuvering qualities are most effective when the tops of the propeller blades both turn（）.
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（）.
The biggest problem you generally encounter while towing a single tow astern is（）.
The condition where a ship on the end of a tow line is riding a wave crest at the same time as its tug rides a wave crest is known as riding in（）.
One major advantage of the round turn maneuver in a man overboard situation is that it（）.
Besides saving distance along the track line，another advantage of the Scharnow Turn over the Williamson Turn in a man overboard situation because（）.
How does the effect known as bank suction act on a single-screw vessel proceeding along a narrow channel?（）.