A.red lights
B.red lights and two white lights
C.red lights with a white light in between
D.white lights with a red light in between
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A.increase
B.decrease
C.change only if the vessel comes about on the opposite tack
D.not change
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
最新試題
Catenary as applied to tow lines denotes the（）.
The effect known as bank cushion acts in which of the following ways on a single-screw vessel proceeding along a narrow channel? （）
Once a towline is connected between the towing vessel and the disabled vessel，the towing vessel should（）.
For the deepest water when rounding a bend in a river，you should navigate your vessel（）.
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（）.
One advantage of chain over wire rope for a tow bridle is that chain（）.
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（）.
It is easier to dock a right-hand，single-screw vessel（）.
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（）.
If you are the stand-on vessel in a crossing situation，you may take action to avoid collision by your maneuver alone. When may this action be taken?（）.