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
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 stability
B.only when there is negative stability
C.only when there is neutral stability
D.at all times
相关考题：
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
With no environmental forces acting on the vessel，the center of gravity of an inclined vessel is vertically aligned with the ______．A.longitudinal centerlineB.center of flotationC.original vertical centerlineD.metacenter
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
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
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
单选题The difference between the height of the metacenter and the height of the center of gravity is known as the（）.Ametacentric heightBheight of the righting armCfore and aft perpendicularDheight of the center of buoyancy
单选题What is the definition of transverse metacenter?（）AThe distance between the actual center of gravity and the maximum center of gravity that will still allow a positive stabilityBThe point to which G may rise and still permit the vessel to possess positive stabilityCThe sum of the center of buoyancy and the center of gravityDThe transverse shift of the center of buoyancy as a vessel rolls
单选题In the absence of external forces，the center of buoyancy of an inclined vessel is vertically aligned directly below the（）.Acenter of gravityBamidships stationCcenter of flotationDgeometric center of the waterplane area
单选题The center of buoyancy and the metacenter are in the line of action of the buoyant force（）.Aonly when there is positive stabilityBonly when there is negative stabilityConly when there is neutral stabilityDat all times
单选题When a vessel is inclined by an external force，the（）.Ashape of the vessel's underwater hull remains the sameBvessel's center of gravity shifts to the center of the vessel's underwater hullCvessel's center of buoyancy shifts to the center of the vessel's underwater hullDvessel's mean draft increases
单选题If a vessel list to port,the center of buoyancy will（）.Amove to portBmove to starboardCmove directly downDstay in the position
单选题The center of buoyancy is located at the（）.Ageometric center of the waterplane areaBintersection of the vertical centerline and line of action of the buoyant forceCcenter of gravity of the vessel corrected for free surface effectsDgeometric center of the displaced volume
单选题In the presence of external forces，the center of buoyancy of an inclined vessel is vertically aligned with the（）.Acenter of gravityBmetacenterCcenter of flotationDkeel
单选题Stability is determined principally by the location of two points in a vessel: the center of buoyancy and the（）.AmetacenterBgeometric center of the waterplane areaCcenter of gravityDcenter of flotation
单选题When cargo is shifted from the main deck into the lower hold of a vessel，（）.AThe metacenter will move downwardBThe GM will increaseCThe center of buoyancy will move upwardDThe list of the vessel will become great
单选题The center of the underwater volume of a floating vessel is the（）.Acenter of buoyancyBcenter of flotationCuncorrected height of the center of gravity of the vesselDcenter of gravity of the vessel corrected for free surface effects
单选题In the absence of external forces, the center of gravity of a floating vessel is located directly above the（）.AmetacenterBamidshipsCcenter of floatationDgeometric center of the displaced volume
单选题Which of the following is the reason that the metacentric height is a valid measure of only the initial stabilit?（）.AThe metacenter does not remain in the same position for large angles of inclinationBThe center of gravity shifts due to inclinationCThe center of gravity shifts above the metacenter as the vessel is inclinedDThe mean draft will change as the vessel is inclined
单选题An unstable upright equilibrium position on a vessel means that the metacenter is（）.Alower than the center of gravityBat the same height as the center of gravityChigher than the baselineDon the longitudinal centerline
单选题At all angles of inclination, the metacenter is（）.Avertically above the center of buoyancyBvertically above the center of gravityCat the intersection of the upright vertical centerline and the line of action of the buoyant forceDat the geometric center of the underwater volume
单选题For a floating vessel, the center of buoyancy and the metacenter are in the line of action of the buoyant force（）.Aonly when there is positive stabilityBonly when there is negative stabilityConly when there is neutral stabilityDat all times
单选题In the absence of external forces，adding weight on one side of a floating vessel causes the vessel to（）.Aheel until the angle of loll is reachedBlist until the center of buoyancy is aligned vertically with the center of gravityCtrim to the side opposite TCG until all moments are equalDdecrease draft at the center of flotation
单选题For a floating vessel，the center of flotation is the point in the waterplane（）.Aabout which the vessel lists and trimsBwhich coincides with the center of buoyancyCwhich，in the absence of external forces，is always vertically aligned with the center of gravityDwhich is shown in the hydrostatic tables as VCB
单选题A neutral equilibrium position for a vessel means that the metacenter is（）.Alower than the keelBat the same height as the center of gravityCexactly at midshipsDat the center of the waterplane area
单选题When cargo is shifted from the main deck into the lower hold of a vessel,（）.AThe metacenter will move downwardBThe GM will increaseCThe center of buoyancy will move upwardDThe list of the vesel will become great
单选题The important initial stability parameter，GM，is the（）.Ametacentric heightBheight of the metacenter above the keelCheight of the center of buoyancy above the keelDheight of the center of gravity above the keel
单选题For a floating vessel,the center of the floating is the point in the waterpiane.（）.Aaboat which the vessel lists and trimsBwhich coincides with the center of buoyancyCwhich, in the absence of external forces, is always vertically aligned with the center of gravityDwhich is shown in the hydrostatic tables as VCB