A.propeller velocity
B.speed of advance
C.wake distribution
D.wake fraction
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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
A.the masthead lights for a towing vessel
B.the lights for a vessel restricted in its ability to maneuver
C.sidelights，sternlight and towing light
D.All of the above
最新試題
Catenary as applied to tow lines denotes the（）.
In order to back a right-handed，single-screw vessel in a straight line，you will probably need to use（）.
The catenary（）.
As a vessel falls off the wind from close-hauled to a beam reach，the tendency for the vessel to move sideways through the water will（）.
Apparent wind speed blowing across a vessel under tow can be measured by a(n)（）.
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（）.
How does the effect known as bank suction act on a single-screw vessel proceeding along a narrow channel?（）.
For the deepest water when rounding a bend in a river，you should navigate your vessel（）.
A vessel which through some exceptional circumstance is unable to maneuver as required by these Rules and is therefore unable to keep out of the way of another vessel is called（）.
Once a towline is connected between the towing vessel and the disabled vessel，the towing vessel should（）.