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When displacement increases，the free surface corrections for slack tanks ______．
A.increase
B.decrease
C.are directly proportional
D.remain unchanged
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更多 “ When displacement increases，the free surface corrections for slack tanks ______．A.increaseB.decreaseC.are directly proportionalD.remain unchanged ” 相关考题
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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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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
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a subsequent temperature rise will cause the cargo to overflowB
air pockets may cause the cargo to bubble out of the ullage holeC
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the tank valve may be stiff and a spill will occur before the valve can be closed
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单选题Your vessel is damaged，listing to port and on occasion flopping to the same angle to starboard. It has a long，slow，sluggish roll around the angle of list. There is excessive trim by the stern with little freeboard aft. What action should you take?（）.A
Jettison any off-center topside weights to lower GM and correct the listB
Pump out any slack after double-bottom tanks to reduce free surface and increase freeboard aftC
Pump out the after peak and fill the forepeak to change the trimD
Press up any slack double-bottom tanks forward of the tipping center，then fill the forepeak if empty
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单选题Your vessel is damaged and is listing to port. The rolling period is short. There is sufficient freeboard so that deck edge submersion is not a problem. What corrective action should be taken FIRST in regard to the vessel’s stability?（）.A
Press up any slack double-bottom tanks to eliminate free surfaceB
Flood any empty double-bottom tanks to add weight low and downC
Jettison topside weights to reduce KG and KBD
Shift any off-center weights from port to starboard
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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
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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 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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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
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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
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单选题Increasing the number of slack liquid tanks has effect of raising the（）.A
uncorrected KGB
maximun allowed KGC
virtual height of the center of gravityD
metacentric height
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单选题When preparing a ship for heavy weather，fuel oil day tanks should be（）.A
pumped overboard to calm the seasB
drained to the lower hull to reduce free surfacesC
filled to ensure that sufficient fuel oil is available during a lengthy emergencyD
partially drained to increase free surfaces in order to reduce motions
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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
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单选题Topside icing that blocks freeing ports and scuppers（）.A
is usually below the center of gravity and has little effecton stabilityB
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单选题Why is it important for fuel oil tanks not to be topped off at the inner bottom level when loading on a cold day?（）A
Increased viscosity of the product needs higher loading pressure, which increases the chances of a spillB
Air pockets may cause the fuel to bubble out of the ullage holeC
The temperature rise of the fuel will cause an overflowD
Fueling valve may become stuck closed and cause the fuel oil to spill before the valve can be opened
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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
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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
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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
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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
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单选题When checking a mooring line，you should（）.A
ensure the bight is not fouled between the ship and the dock by taking up slackB
pay out slack smartly and keep free for runningC
secure more turns to hold the line against any strain，then clear the areaD
surge the line so that it maintains a strain without parting
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