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单选题
At all angles of inclination, the metacenter is（）.
A
vertically above the center of buoyancy
B
vertically above the center of gravity
C
at the intersection of the upright vertical centerline and the line of action of the buoyant force
D
at the geometric center of the underwater volume
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考题
Cross curves of stability show which of the following？A.The righting arms at various angles of inclination and displacementB.The metacentric height at large angles of heelC.The height of the center of buoyancy at various anglesD.The metacentric radius at various displacements
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That REMOVE ANY LIST ON THE V/L AFTER EACH WATCH END means that ______．A.any list，no matter where it is posted，shall be removed prior to ending his watch by the OOWB.the vessel should not be removedC.any and all lists on board the vessel should be taken offD.the inclination of the vessel should be corrected prior to ending his watch by the OOW
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A floating vessel will behave as if all of its weight is acting downward through the ______.A.center of gravityB.center of buoyancyC.center of floationD.Metacenter
考题
At all angles of inclination, the metacenter is ______.A.vertically above the center of buoyancyB.vertically above the center of gravityC.at the intersection of the upright vertical centerline and the line of action of the buoyant forceD.at the geometric center of the underwater volume
考题
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
考题
For small angles of inclination, if the KG were equal to the KM, then the vessel would have __________.A.position stabilityB.negative stabilityC.neutral stabilityD.maximum stability
考题
GM cannot be used as an indicator of stability at all angles of inclination because ______.A.M is not fixed at large anglesB.there is no M at large anglesC.G is not fixed at large anglesD.there is no G at large angles
考题
If the vertical center of gravity (VCG) of a ship rises 1.7 feet, the righting arm (GZ) for the various angles of inclination will ______.A.decreaseB.increaseC.remain unchangedD.be changed by the amount of GG’ x cosine of the angle
考题
单选题The magnitude of a moment is the product of the force and（）.A
timeB
lever armC
displacementD
angle of inclination
考题
单选题Inclination of the vessel to port side or starboard side defines（）.A
TipB
CapsizeC
ListD
Trim
考题
单选题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
考题
单选题The vertical distance between G and M is used as a measure of（）.A
stability at all angles of inclinationB
initial stabilityC
stability at angles less than the limit of positive stabilityD
stability at angles less than the downflooding angle
考题
单选题Which one of the following is a counterexample to the statement “If two angles are supplementary, then they are right angles?”A
If two angles are complementary, then they are not right angles.B
If two angles are fight angles, then they are supplementary.C
If two angles are not supplementary, then they are not right angles.D
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If two angles are not fight angles, then they are not supplementary.
考题
单选题In observing rig motion while under tow，the period of roll is the time difference between（）.A
zero inclination to full inclination on one sideB
full inclination on one side to full inclination on the other sideC
full inclination on one side to the next full inclination on the same sideD
zero inclination to the next zero inclination
考题
单选题If the vertical center of gravity (VCG) of a ship rises 1.7 feet，the righting arm (GZ) for the various angles of inclination will（）.A
decreaseB
increaseC
remain unchangedD
be changed by the amount of GG' x cosine of the angle
考题
单选题Which of the following is the reason that the metacentric height is a valid measure of only the initial stabilit?（）.A
The metacenter does not remain in the same position for large angles of inclinationB
The center of gravity shifts due to inclinationC
The center of gravity shifts above the metacenter as the vessel is inclinedD
The mean draft will change as the vessel is inclined
考题
单选题For small angles of inclination,if the KG were equal to the KM,then the vessel would have（）.A
positive stabilityB
negative stabilityC
neutral stabilityD
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单选题GM cannot be used as an indicator of stability at all angles of inclination because（）.A
M is not fixed at large anglesB
there is no M at large anglesC
G is not fixed at large anglesD
there is no G at large angles
考题
单选题At all angles of inclination，the true measure of a vessel’s stability is the（）.A
metacentric heightB
displacementC
righting momentD
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考题
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
考题
单选题For a vessel with list,a decrease in GMT will cause the inclination to（）.A
stabilize at an angle of lollB
decreaseC
increaseD
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考题
单选题In any right triangle, the acute angles are ______.A
EqualB
Adjacent anglesC
Vertical anglesD
Complementary anglesE
Supplementary angles
考题
单选题For a vessel with list，a decrease in GMT will cause the angle of inclination to（）.A
stabilize at an angle of lollB
decreaseC
increaseD
remain constant
考题
单选题The height of the metacenter above the keel will vary depending on the（）.A
draft and beam of the shipB
displacement and deadweight of the shipC
buoyancy and trim of the shipD
tonnage and deadweight of the ship
考题
单选题That REMOVE ANY LIST ON THE V/L AFTER EACH WATCH END means that（）.A
any list，no matter where it is posted，shall be removed prior to ending his watch by the OOWB
the vessel should not be removedC
any and all lists on board the vessel should be taken offD
the inclination of the vessel should be corrected prior to ending his watch by the OOW
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