單項選擇題Cross curves of stability show which of the following（）.

A.The righting arms at various angles of inclination and displacement
B.The metacentric height at large angles of heel
C.The height of the center of buoyancy at various angles
D.The metacentric radius at various displacements


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1.單項選擇題At all angles of inclination，the true measure of a vessel’s stability is the（）.

A.metacentric height
B.displacement
C.righting moment
D.inclining moment

2.單項選擇題Addition of weight above the center of gravity of a vessel will ALWAYS（）.

A.reduce initial stability
B.increase righting moments
C.increase GM
D.All of the above

3.單項選擇題Aboard damaged vessels，the MOST important consideration is preserving（）.

A.bilge pumping capacity
B.reserve buoyancy
C.level attitude
D.instability

4.單項選擇題A vessel has a strong wind on the port beam. This has the same affect on stability as（）.

A.weight that is off-center to starboard
B.increasing the draft
C.reducing the freeboard
D.increasing the trim

5.單項選擇題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