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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 vessel
B
dimensions of the surface of the liquid
C
amount of liquid in slack tanks
D
specific gravity of the liquid in the tank
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Freeboard is a measure of which of the following？Ⅰ．The amount of reserve buoyancy．Ⅱ．The initial stability of the vessel．A.Ⅰ onlyB.Ⅱ onlyC.Both Ⅰ and ⅡD.Neither Ⅰ nor Ⅱ
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The Chief Mate must ascertain that the deck loads are stowed in such a manner as ______.A.not to affect the draught trimB.not to affect the cargo ventilationC.not to affect the free surfaceD.not to affect the vessel's stability
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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
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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
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In order to minimize the effects of a tender vessel，when carrying a cargo of lumber，you should ______．A.Maximize your deck loadB.Distribute lumber so that those stowing most compactly per unit of weight are in the upper holdsC.Place the heaviest woods in the lower holdsD.Keep the vessel's frame spaces free from lumber
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
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
GM is a measure of ______.① The initial stability of a vessel.② The rightingness of the vessel.A.① onlyB.② onlyC.Both ① and ②D.Neither ① nor ②
考题
单选题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
考题
单选题Your vessel was damaged and initially assumed a significant list and trim; however，further increase has been slow. Based on this data，what should you expect?（）A
The slowing is only temporary and the vessel will probably suddenly capsize or plunge from loss of stability due to change in the waterplane areaB
The vessel can probably be saved if further flooding can be stoppedC
The vessel will continue to slowly list and/or trim due to the free surface effect and free communication effectD
The vessel will suddenly flop to the same or greater angle of list on the other side and may capsize
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
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 th eload’s（）.A
TCGB
transverse momentC
righting momentD
transverse free surface moment
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A flooded lifeboat on board a vessel would adversely affect the vessel’s stability by（）.A
increasing the righting momentB
decreasing the vessel's displacementC
increasing the reserve buoyancyD
shifting the CG（center of gravity）off center
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You may improve a vessels stability by （）.A
keeping the fuel tanks topped offB
increasing the free surface effectC
keeping the fuel tanks at least half MID
keeping at least one fuel tank empty for slops
考题
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
考题
单选题Master must ascertain that deck loads are stowed in such a manner as（）.A
not to affect the vessel's stability and trimB
to affect the vessel's stabilityC
to affect the vessel's trimD
to affect the vessel's atability or trim
考题
单选题In order to minimize the effects of a tender vessel，when carrying a cargo of lumber，you should（）.A
maximize your deck loadB
distribute lumber so that those stowing most compactly per unit of weight are in the upper holdsC
place the heaviest woods in the lower holdsD
keep the vessel's frame spaces free from lumber
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What is the principal danger from the liquid in a half full tank onboard a vessel?（）A
Corrosion from the shifting liquidB
Rupturing of bulkheads from the shifting liquidC
Loss of stability from free surface effectD
Holing of the tank bottom from the weight of the shifting liquid
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If the cause of a sudden severe list is negative initial stability，counterflooding into empty tanks may（）.A
increase the righting momentB
cause an increase in the righting armC
bring the vessel to an upright equilibrium positionD
cause the vessel to flop to a greater angle
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
decrease ship stability
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