单项选择题
A.unoccupied space below the waterline B.volume of intact space above the waterline C.excess of the buoyant force over the gravity force D.difference in the buoyant force in salt and fresh waters
Reserve buoyancy is（）.A.also called GMB.the void portio...
单项选择题Reserve buoyancy is（）.
A.also called GM B.the void portion of the ship below the waterline which is enclosed and watertight C.affected by the number of transverse watertight bulkheads D.the watertight portion of a vessel above the waterline
Reducing the liquid free surfaces in a vessel reduces t...
单项选择题Reducing the liquid free surfaces in a vessel reduces the（）.
A.roll period B.metacentric height C.waterplane area D.vessel's draft
Owing to the big draft，the ship is not permitted to go ...
单项选择题Owing to the big draft，the ship is not permitted to go alongside until the time of（）.
A.ebb tide B.flood tide C.spring tide D.slack water
