A.insure that the hawser leads directly aft as it passes over the stern of the towing vessel
B.increase the stability of the towing vessel by raising the hawser off the deck
C.reduce chafing of the towing hawser
D.prevent fouling of the hawser on deck gear located on the stern of the towing vessel
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A.increase the righting moment
B.cause an increase in the righting arm
C.bring the vessel to an upright equilibrium position
D.cause the vessel to flop to a greater angle
A.contaminating food with extinguishing agent
B.spreading through the engineering space
C.loss of stability
D.a grease fire in the ventilation system
A.the vessel must be moored snugly
B.each tank must be partially full to show it does not leak
C.all dunnage，tools，and extraneous items are secured
D.water under vessel must be deep enough to prevent grounding
A.which exists when the wind speed is less than 50 knots
B.before collision
C.after flooding
D.at the maximum load
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
最新試題
Stability is determined by the relationship of the center of gravity and the（）.
What is the principal danger from the liquid in a half full tank onboard a vessel?（）
If the cause of a sudden severe list is negative initial stability，counterflooding into empty tanks may（）.
When a vessel has positive stability，the distance between the line of force through B and the line of force through G is called the（）.
Initial stability refers to stability（）.
The maximum angle at which the intact stability curves are valid for ship’s is the angle for（）.
What is the definition of transverse metacenter?（）
To ensure the ship’s general stability，（）.
The angle of loll is a stability term which applies to a floating ship with（）.
In astern towing，a tow span，also called the tow bar or towing arch，is used to（）.