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单选题
The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel’s displacement into the（）.
A
transverse free surface correction for the vessel
B
sum of the vertical moments of the vessel
C
sum of the longitudinal free surface moments of the vessel
D
longitudinal centerline of the vessel
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更多 “单选题The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel’s displacement into the（）.A transverse free surface correction for the vesselB sum of the vertical moments of the vesselC sum of the longitudinal free surface moments of the vesselD longitudinal centerline of the vessel” 相关考题
考题
When the________is large, the ship is stiff;and when it is small,she is tender.A.GMB.Free surfaceC.Longitudinal center of gravityD.transverse center of gravity
考题
Repairing damage to the hull of a ship at or above the waterline reduces the threat of ______.A.free surface effectsB.capsizing the shipC.continued progressive floodingD.wind overturning moments
考题
An upright vessel has negative GM．GM becomes positive at the angle of loll because the ______．A.Free surface effects are reduced due to pocketingB.KG is reduced as the vessel seeks the angle of lollC.Effective beam is increased causing BM to increaseD.Underwater volume of the hull is increased
考题
The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel's displacement into the ______．A.Transverse free surface correction for the vesselB.Sum of the vertical moments of the vesselC.Sum of the longitudinal free surface moments of the vesselD.Longitudinal centerline of the vessel
考题
Which statement about the free surface effect is TRUE ________．A.It increases in direct proportion to the length of the tank times the breadth squaredB.It decreases at increased angles of heel due to pocketing when a tank is 90% fullC.It decreases in direct proportion to increasing specific gravity of the liquid in the tankD.In practice，the correction is considered to be a virtual reduction of KG
考题
The free surface corrections depend upon the dimensions of the surface of the free liquids and the ______．A.volume of liquid in the tankB.displacement of the vesselC.location of the tank in the vesselD.height of the center of gravity of the vessel
考题
The free surface effects of a partially full liquid tank decrease with increased ______．A.Density of the liquidB.Placement of the tank above the keelC.Displacement volume of the shipD.Size of the surface area in the tank
考题
When displacement increases，the free surface corrections for slack tanks ______．A.increaseB.decreaseC.are directly proportionalD.remain unchanged
考题
Floors aboard ship are ______．A.frames to which the tank top and bottom shell are fastened on a double bottomed shipB.transverse members of the ships frame which support the decksC.longitudinal beams in the extreme bottom of a ship from which the ship's ribs startD.longitudinal angle bars fastened to a surface for strength
考题
A vessel’s KG is determined by ______.A.dividing the total longitudinal moment summation by displacementB.dividing the total vertical moment summation by displacementC.multiplying the MTl by the longitudinal momentsD.subtracting LCF from LCB
考题
As the displacement of a vessel increases,. the detrimental effect of free surface ______.A.increasesB.decreasesC.remains the sameD.may increase or decrease depending on the fineness of the vessel’s form
考题
单选题Aboard a vessel，multiplying a load’s weight by the distance of the load’s center of gravity from the centerline results in the load’s（）.A
TCGB
transverse momentC
righting momentD
transverse free surface moment
考题
单选题To calculate the free surface correction，it is necessary to divide the free-surface moments by the（）.A
total weight of liquid loadsB
total displacementC
lightweightD
deadweight
考题
单选题Which of the following is more important in determining the amount of free surface that will be produced?（）.A
Outside temperatureB
Dewpoint of the outside airC
Dewpoint of the air in the cargo holdD
Temperature of the cargp
考题
单选题The effects of free surface on a vessel’s initial stability do NOT depend upon the（）.A
volume of displacement of the vesselB
dimensions of the surface of the liquidC
amount of liquid in slack tanksD
specific gravity of the liquid in the tank
考题
单选题As the displacement of a vessel increases, the detrimental effect of free surface（）.A
increasesB
decreasesC
remains the sameD
may increase or decrease depending on the fineness of the vessel's form
考题
单选题Topside icing decreases vessel stability because it is usually off-center and（）.A
increases displacementB
increases the height of the center of gravityC
increases draftD
reduces the pocketing of free surface
考题
单选题Grinding to eliminate shallow surface defects should be done（）.A
parallel to the longitudinal direction of the chainB
perpendicular to the direction of the anchor chainC
diagonally across the link of the anchor chainD
around the circumference of the chain link
考题
单选题A change of trim may be simply defined as（）.A
the change in difference between the forward and aft draftsB
the sum of free communication，free surface and pocketingC
the moment of inertia of the ship's waterline plane about the athwartship axisD
rolling and listing
考题
单选题The center of the underwater volume of a floating vessel is the（）.A
center of buoyancyB
center of flotationC
uncorrected height of the center of gravity of the vesselD
center of gravity of the vessel corrected for free surface effects
考题
单选题Many vessels are provided with flume tanks，which also have a dump tank located under the flume tanks. In the event the ship is damaged，you could dump the flume tanks into the dump tank which would（）.A
reduce the free surface effect and raise the KGB
not have any effect on free surface and raise the KGC
reduce the free surface effect and lower the KGD
not have any effect on free surface and lower the KG
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A wooden plug fitted tightly in the vent of a damaged tank may prevent the tank from（）.A
filling completelyB
developing free surfaceC
developing free surface momentD
collapsing
考题
单选题The effect of free surface on initial stability depends upon（）.A
the amount of liquid in the compartmentB
the dimensions of the liquid surface and the vessel's displacementC
only the length of the compartmentD
the vertical position of the liquid in the vessel
考题
单选题The effects of free surface on initial stability depend upon the dimensions of the surface of the free liquids and the（）.A
volume of liquid in the tankB
volume of displacement of the vesselC
location of the tank in the vesselD
height of the center of gravity of the vessel
考题
单选题A vessel’s KG is determined by（）.A
dividing the total longitudinal moment summation by displacementB
dividing the total vertical moment summation by displacementC
multiplying the MT1 by the longitudinal momentsD
subtracting LCF from LCB
考题
单选题A serious loss of reserve buoyancy resulting from flooding any compartment of a ship will always（）.A
increase the trimB
change the free surface effectC
cause a serious listD
decrea e ship stabilty
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