默认题库 - 船舶浮性资料

单选题

It is apparent that there was not sufficient depth of water（）and I claim that the estimated arrival draft as radioed to the agent to report to you was a close one.

A. for my vessel crossing safely
B. my vessel is to cross safely
C. for my vessel to cross safely
D. for my vessel's crossing safely

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单选题

Intact buoyancy is a term used to describe（）.

A. the volume of all intact spaces above the waterline
B. an intact space below the surface of a flooded area
C. an intact space which can be flooded without causing a ship to sink
D. the space at which all the vertical upward forces of buoyancy are considered to be concentrated

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单选题

Reserve buoyancy is the（）.

A. unoccupied space below the waterline
B. volume of intact space above the waterline
C. excess of the buoyant force over the gravity force
D. difference in the buoyant force in salt and fresh water

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单选题

The center of the underwater volume of a floating vessel is the（）.

A. center of buoyancy
B. center of flotation
C. uncorrected height of the center of gravity of the vessel
D. center of gravity of the vessel corrected for free surface effect

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单选题

The difference between the initial trim and the trim after loading is known as（）.

A. trim
B. change of trim
C. final trim
D. change of draft

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单选题

On a semisubmersible ship，reserve buoyancy is increased by the presence of void spaces above the waterline in the（）.

A. submerged hulls
B. quarters
C. columns and upper structure
D. submerged connecting structure

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单选题

A semisubmersible which will not remain upright and will assume a list either to port or starboard is likely to have（）.

A. a large TCG
B. a negative GM
C. excessive ballast
D. insufficient deck load

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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 surface
B. Flood any empty double-bottom tanks to add weight low and down
C. Jettison topside weights to reduce KG and KB
D. Shift any off-center weights from port to starboard

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单选题

A common occurrence when a vessel is running into shallow water is that（）.

A. the wake is less pronounced
B. the vessel is more responsive to the rudder
C. squat will cause a decrease in bottom clearance and an increase in draft
D. All of the above

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单选题

A current moving across a lock entrance toward the river or toward the dam is called a(n)（）.

A. cutoff
B. outdraft
C. lockwash
D. springpool

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