A.removing loose water
B.adding weight low in the vessel
C.closing crossover valves between partly filled double bottom tanks
D.All of the above
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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
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
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If the cause of a sudden severe list is negative initial stability，counterflooding into empty tanks may（）.
Stability is determined principally by the location of the point of application of two forces: the downward-acting gravity force and the（）.
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（）.
The angle of loll is a stability term which applies to a floating ship with（）.
The effects of free surface on a vessel’s initial stability do NOT depend upon the（）.
In astern towing，a tow span，also called the tow bar or towing arch，is used to（）.
The maximum angle at which the intact stability curves are valid for ship’s is the angle for（）.
The moment of a force is a measure of the（）.
To prevent loss of stability from free communication flooding you should（）.
Repair of vital machinery and services on a ship should be accomplished（）.