单项选择题

A flooded leg on a lift boat would adversely affect the vessel’s stability underway by（）.

A.increasing the righting moment
B.decreasing the vessel's displacement
C.increasing the reserve buoyancy
D.shifting the CG (center of gravity) off center

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单项选择题

（）is the tendency of a vessel to return to its original position after it is displaced therefrom.

A.Inclining moment
B.Stability
C.Shearing force
D.Bending moment

单项选择题

The tendency of a vessel to return to its original trim after being inclined by an external force is（）.

A.equilibrium
B.buoyancy
C.transverse stability
D.longitudinal stability

单项选择题

The pivoting point of a fully loaded vessel with normal trim proceeding ahead at sea speed is（）.

A.right at the bow
B.one-third the length of the vessel from the bow
C.one-half the length of the vessel from the bow
D.two-thirds the length of the vessel from the bow