單項選擇題

For a floating vessel,true mean draft is always the（）.

A.average of the observed drafts
B.draft at the centre of flotation
C.draft corresponding to the center of buoyancy
D.metacentric height

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單項選擇題

For a vessel inclined by the wind, multiplying the buoyant force by the horizontal distance between the lines of action of the buoyant and gravity forces gives the（）.

A.righting moment
B.vertical moment
C.longitudinal moment
D.transverse moment

單項選擇題

For a vessel with list,a decrease in GMT will cause the angle of inclination to（）.

A.stabilize at an angle of loll
B.decrease
C.increase
D.remain constant