默认题库 - 船舶货运基本知识

单选题

At an angle of loll，the capsizing moment is（）.

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

单选题

During counterflooding to correct a severe list or trim aggravated by an off-center load，a ship suddenly takes a list or trim to the opposite side. You should（）.

A. continue counterflooding in the same direction
B. continue counterflooding，but in the opposite direction
C. immediately stop counterflooding
D. deballast from the low side

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单选题

Heave is motion along the（）.

A. longitudinal axis
B. transverse axis
C. vertical axis
D. centerline axi

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单选题

Pitching is angular motion of the vessel about what axis?（）.

A. Longitudinal
B. Transverse
C. Vertical
D. Centerline

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单选题

That center around which a vessel trims is called the（）.

A. tipping center
B. center of buoyancy
C. center of gravity
D. turning center

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单选题

The center of flotation of a vessel is the point in the waterplane（）.

A. about which the vessel lists and trims
B. which coincides with the center of buoyancy
C. which，in the absence of external forces，is always vertically aligned with the center of gravity
D. which is shown in the hydrostatic tables as VCB

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单选题

The difference between the forward and aft drafts is（）.

A. list
B. heel
C. trim
D. flotatio

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单选题

Semisubmersibles A and B are identical. However，A is more tender than B. This means that A relative to B has a（）.

A. lower KG
B. smaller GM
C. smaller roll angle
D. larger GZ

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单选题

In the absence of external forces，the center of gravity of a floating vessel is located directly above the（）.

A. metacenter
B. amidships
C. center of flotation
D. geometric center of the displaced volume

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单选题

In the absence of external forces，adding weight on one side of a floating vessel causes the vessel to（）.

A. heel until the angle of loll is reached
B. list until the center of buoyancy is aligned vertically with the center of gravity
C. trim to the side opposite TCG until all moments are equal
D. decrease draft at the center of flotatio

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