单项选择题

A.pitching increasesB.list increasesC.rolling increases……

Bilge keels are more effective at dampening rolls as the（）.

A.pitching increases
B.list increases
C.rolling increases
D.draft decreases

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热门试题

单项选择题Before counterflooding to correct a list，you must be sure the list is due to（）.

A.negative GM
B.flooding
C.off-center weight
D.reserve buoyancy

单项选择题At an angle of loll，the righting arm (GZ) is（）.

A.maximum
B.negative
C.positive，but reflexive
D.zero

单项选择题At an angle of loll，the capsizing moment is（）.

A.maximum
B.negative
C.positive
D.zero

单项选择题At all angles of inclination，the metacenter is（）.

A.vertically above the center of buoyancy
B.vertically above the center of gravity
C.at the intersection of the upright vertical centerline and the line of action of the buoyant force
D.at the geometric center of the underwater volume

单项选择题As a ship moves through the water，it causes a wake，which is also moving forward relative to the sea. In addition to a fore and aft motion，this wake also has a(n)（）.

A.downward and inward flow
B.downward and outward flow
C.upward and inward flow
D.upward and outward flow