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单选题
In the absence of external forces，the center of buoyancy of an inclined vessel is vertically aligned directly below the（）.
A
center of gravity
B
amidships station
C
center of flotation
D
geometric center of the waterplane area
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In the absence of external forces，adding weight on one side of a floating vessel causes the vessel to ().A.heel until the angle of loll is reachedB.list until the center of buoyancy is aligned vertically with the center of gravityC.trim to the side opposite TCG until all moments are equalD.decrease draft at the center of flotation
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Jettisoning weight from topside ______.A.returns the vessel to an even keelB.reduces free surface effectC.lowers the center of gravityD.raises the center of buoyancy
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A vessel is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is ______.A.positiveB.negativeC.zeroD.vertical
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For a floating vessel, the center of flotation is the point in the waterplane ______.A.about which the vessel lists and trimsB.which coincides with the center of buoyancyC.which, in the absence of external forces, is always vertically aligned with the center of gravityD.which is shown in the hydrostatic tables as VCB
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In small angle stability, when external forces exist, the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the ______.A.center of gravityB.center of flotationC.metacenterD.metacentric height
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In the presence of external forces, the center of buoyancy of an inclined vessel is vertically aligned with the ______.A.center of gravityB.metacenterC.center of flotationD.Keel
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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
The point to which G may rise and still permit the vessel to possess positive stabilityC
The sum of the center of buoyancy and the center of gravityD
The transverse shift of the center of buoyancy as a vessel rolls
考题
单选题In order to determine the trimming arm for your vessel at any particular draft，which of the following would you compare?（）.A
Longitudinal center of buoyancy and longitudinal center of gravityB
Longitudinal center of floatation and longitudinal center of gravityC
Longitudinal center of floatation and longitudinal center of buoyancyD
Longitudinal tipping center and longitudinal center of gravity
考题
单选题The center of flotation of a vessel is the point in the waterplane（）.A
about which the vessel lists and trimsB
which coincides with the center of buoyancyC
which，in the absence of external forces，is always vertically aligned with the center of gravityD
which is shown in the hydrostatic tables as VCB
考题
单选题The center of flotation of a vessel is（）.A
the center of volume of the immersed portion of the vesselB
the center of gravity of the water planeC
that point at which all the vertical downward forces of weight are considered to be concentratedD
that point at which all the vertical upward forces of buoyancy are considered to be concentrated
考题
单选题When a vessel is inclined by an external force，the（）.A
shape of the vessel's underwater hull remains the sameB
vessel's center of gravity shifts to the center of the vessel's underwater hullC
vessel's center of buoyancy shifts to the center of the vessel's underwater hullD
vessel's mean draft increases
考题
单选题The mean draft of a ship is the draft（）.A
midway between the forward and aft draft marksB
at the center of flotationC
at the load lineD
at the center of buoyancy
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单选题If a vessel lists to port，the center of buoyancy will（）.A
move to portB
move to starboardC
move directly downD
stay in the same position
考题
单选题If a vessel list to port,the center of buoyancy will（）.A
move to portB
move to starboardC
move directly downD
stay in the position
考题
单选题Intact buoyancy is a term used to describe（）.A
the volume of all intact spaces above the waterlineB
an intact space below the surface of a flooded areaC
an intact space which can be flooded without causing a ship to sinkD
the space at which all the vertical upward forces of buoyancy are considered to be concentrated
考题
单选题The center of buoyancy is located at the（）.A
geometric center of the waterplane areaB
intersection of the vertical centerline and line of action of the buoyant forceC
center of gravity of the vessel corrected for free surface effectsD
geometric center of the displaced volume
考题
单选题A vessel is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is（）.A
positiveB
negativeC
zeroD
vertical
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单选题In small-angle stability，when external forces exist，the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the（）.A
center of gravityB
center of flotationC
metacenterD
metacentric height
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单选题In the presence of external forces，the center of buoyancy of an inclined vessel is vertically aligned with the（）.A
center of gravityB
metacenterC
center of flotationD
keel
考题
单选题Stability is determined by the relationship of the center of gravity and the（）.A
water depthB
keelC
center of flotationD
center of buoyancy
考题
单选题In snall angle stability, when external forces exist , the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the（）.A
center of gravityB
center of flotationC
metacenterD
metacentric height
考题
单选题In the absence of external forces, the center of gravity of a floating vessel is located directly above the（）.A
metacenterB
amidshipsC
center of floatationD
geometric center of the displaced volume
考题
单选题Jettisoning weight from topside（）.A
return the vesselto an even keelB
reduces free surface effectC
lowers the center of gravityD
raises the center of buoyancy
考题
单选题In the absence of external forces，adding weight on one side of a floating vessel causes the vessel to（）.A
heel until the angle of loll is reachedB
list until the center of buoyancy is aligned vertically with the center of gravityC
trim to the side opposite TCG until all moments are equalD
decrease draft at the center of flotation
考题
单选题For a floating vessel，the center of flotation is the point in the waterplane（）.A
about which the vessel lists and trimsB
which coincides with the center of buoyancyC
which，in the absence of external forces，is always vertically aligned with the center of gravityD
which is shown in the hydrostatic tables as VCB
考题
单选题The important initial stability parameter，GM，is the（）.A
metacentric heightB
height of the metacenter above the keelC
height of the center of buoyancy above the keelD
height of the center of gravity above the keel
考题
单选题For a floating vessel,the center of the floating is the point in the waterpiane.（）.A
aboat which the vessel lists and trimsB
which coincides with the center of buoyancyC
which, in the absence of external forces, is always vertically aligned with the center of gravityD
which is shown in the hydrostatic tables as VCB
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