A.barometer
B.wind vane
C.anemometer
D.thermometer
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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
A.straight astern
B.to port
C.to starboard
D.in no particular direction
最新試題
In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.
The biggest problem you generally encounter while towing a single tow astern is（）.
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 effect known as bank cushion acts in which of the following ways on a single-screw vessel proceeding along a narrow channel? （）
Catenary as applied to tow lines denotes the（）.
One major advantage of the round turn maneuver in a man overboard situation is that it（）.
In order for a vessel to be engaged in fishing she must be（）.
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（）.
Once a towline is connected between the towing vessel and the disabled vessel，the towing vessel should（）.
A vessel is equipped with a single right-handed screw. With rudder amidships and calm wind，the vessel will most likely back（）.