A.A lightly laden vessel requires as much stopping distance as a fully laden vessel when the current is from astern
B.A vessel is dead in the water when the back wash from astern operation reaches the bow
C.A tunnel bow thruster can be used in an emergency to reduce the stopping distance
D.When a vessel is dead in the water any speed displayed by doppler log reflects the current
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A.It has a small GM
B.It pitches heavily
C.It has an unusually high center of gravity
D.Its period of roll is short
A.Slightly higher fuel consumption
B.Lack of directional control when backing
C.Inefficient at high shaft RPM
D.Some unusual handling characteristics
A.A long swell from an unusual direction
B.A lengthy lull in the wind and seas
C.Large seas coming from different directions
D.A brisk chop from the southeast
A.Excessive pitching
B.Excessive yawing
C.Excessive rolling
D.No change should be evident
A.reduce the time the sounding tube is open
B.avoid creating a spark
C.lessen the effect of roll or pitch on the reading
D.lessen the effect of heave on the reading
最新試題
The forward movement of a ship in one revolution of its propeller is measured by（）.
One method of controlling rats on vessels is by rat-proofing. Rat-proofing is accomplished by （）.
When a deck cargo is secured with chain or wire lashings and grab (pear) links，which statement is FALSE?（）
The distance that a ship moves forward with each revolutionof its propeller，if there is no slip，is called（）.
To prevent damage by and to storage batteries aboardsmall passenger vessels they should be located（）.
When preparing a ship for heavy weather，fuel oil day tanks should be（）.
Which characteristic is a disadvantage of a controllable- pitch propeller as compared to a fixed-pitch propeller? （）
The vertical movement of a vessel in the water is called（）.
Which statement is TRUE concerning a towing vessel which，due to the nature of her work，is unable to keep out of the way of another vessel?（）
Which statement is TRUE of a stiff vessel? （）