A.lower than the keel
B.at the same height as the center of gravity
C.exactly at midships
D.at the center of the waterplane area
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A.shape of the vessel's underwater hull remains the same
B.vessel's center of gravity shifts to the center of the vessel's underwater hull
C.vessel's center of buoyancy shifts to the center of the vessel's underwater hull
D.vessel's mean draft increases
A.total weight of liquid loads
B.total displacement
C.lightweight
D.deadweight
A.LCG
B.transverse moment
C.righting moment
D.inclining moment
A.height of the metacenter
B.height of the righting arm
C.height of the center of buoyancy
D.metacentric height
A.the length between perpendiculars
B.the registered length
C.the length overall
D.the length of waterplane on summer draft
A.free surface
B.marginal stability
C.reserve buoyancy
D.freeboard
A.inclining moments
B.righting moments
C.vertical moments
D.longitudinal position of the center of gravity
A.increase reserve buoyancy
B.decrease the righting moments
C.decrease KG
D.increase KM
A.an engine
B.an overall length
C.a displacement
D.a draft
A.lifesaving equipment
B.stability
C.mooring tension
D.riser tension
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The center of buoyancy and the metacenter are in the line of action of the buoyant force（）.
Load line regulations are designed to insure that a vessel has adequate structural strength and sufficient（）.
The term that indicates how many tons of cargo a vessel can carry is（）.
For a floating vessel，the center of flotation is the point in the waterplane（）.
A vessel’s LCG is determined by（）.
The term length of a vessel in International Regulations for Preventing Collision at Sea 1972 means（）.
A moment is obtained by multiplying a force by its（）.
In the absence of external forces，the center of gravity of a floating vessel is located directly above the（）.
The upward pressure of displaced water is called（）.
Vessel shall possess（）valid for duration of charter Party showing winches and derricks in order.