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单选题
When a vessel has positive stability，the distance between the line of force through B and the line of force through G is called the（）.
A
metacentric height
B
righting arm
C
righting moment
D
metacentric radius
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单选题Which of the following will increase the positive stability of your vessel?（）.A
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考题
单选题What is the definition of transverse metacenter?（）A
The distance between the actual center of gravity and the maximum center of gravity that will still allow a positive stabilityB
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The sum of the center of buoyancy and the center of gravityD
The transverse shift of the center of buoyancy as a vessel rolls
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单选题A tank which carries liquid is dangerous to the stability of a vessel when it is（）.A
low in the vesselB
completely emptyC
completely fullD
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单选题When considering a vessel’s stability，which spaces in a general cargo vessel are the best locations for the carriage of bulk grain? （）A
Deep tanksB
Lower holdsC
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'Tween-decks
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单选题The vertical distance between G and M is used as a measure of（）.A
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initial stabilityC
stability at angles less than the limit of positive stabilityD
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单选题What is the stability term for the distance from the center of gravity (G) to the Metacenter (M)，when small-angle stability applies? （）A
metacentric heightB
metacentric radiusC
height of the metacenterD
righting arm
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单选题Which statement about stopping a vessel is TRUE?（）A
A lightly laden vessel requires as much stopping distance as a fully laden vessel when the current is from asternB
A vessel is dead in the water when the back wash from astern operation reaches the bowC
A tunnel bow thruster can be used in an emergency to reduce the stopping distanceD
When a vessel is dead in the water any speed displayed by doppler log reflects the current
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单选题In stopping distances of vessels，head reach can best be described as the（）.A
difference between the vessel's speed through the water at any instant and the new speed ordered on the telegraphB
distance the vessel has actually run through the water since a change of speed was orderedC
distance the vessel will run between taking action to stop her and being stationary in the waterD
speed at which a vessel should proceed to ensure that she will run a predetermined distance，once her engines have been stopped
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单选题A vessel has a strong wind on the port beam. This has the same affect on stability as（）.A
weight that is off-center to starboardB
increasing the draftC
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increasing the trim
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单选题If your passenger vessel has been issued a stability letter，it must be （）.A
filed in the ship’s officeB
posted in a passenger areaC
posted adjacent to the Certificate of InspectionD
posted in the pilothouse
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单选题Initial stability of a vessel may be improved by（）.A
removing loose waterB
adding weight low in the vesselC
closing crossover valves between partly filled double bottom tanksD
All of the above
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单选题The stability of a vessel is normally the greatest when all fuel and water tanks are full because the （）.A
center of gravity is loweredB
center of buoyancy is loweredC
reserve buoyancy is unchangedD
hull freeboard is increased
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单选题When we say that two objects have relative motion, we mean （）.A
the distance between them remains the sameB
the distance between them is changingC
the position between them is not changingD
their positions to the earth remain the same
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单选题For an upright vessel, draft is the vertical distance between the keel and the （）.A
waterlineB
freeboard deckC
Plimsoll markD
amidships section
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单选题For a floating vessel, the center of buoyancy and the metacenter are in the line of action of the buoyant force（）.A
only when there is positive stabilityB
only when there is negative stabilityC
only when there is neutral stabilityD
at all times
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单选题The point to which your vessel’s center of gravity (G) may rise and still permit the vessel to have positive stability is called the（）.A
metacentric pointB
metacenterC
metacentric radiusD
tipping center
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单选题The distance a vessel moves at right angles to the original course，when a turn of 180°has been completed，is called the（）.A
advanceB
pivoting pointC
tactical diameterD
kick
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单选题If you were being assisted by an icebreaker and he sent you the single letter Q，he would be telling you（）.A
that he has his engines in reverseB
that he is shortening the distance between vesselsC
to shorten the distance between vesselsD
that his vessel is healthy
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