单项选择题
Keeping the draft at or below the load line mark will insure that the vessel has adequate（）.
A.ballast B.reserve buoyancy C.displacement D.rolling periods
单项选择题 It’ll affect neither the draft（）the rotation of discharging.
单项选择题 It is apparent that there was not sufficient depth of water（）and I claim that the estimated arrival draft as radioed to the agent to report to you was a close one.
单项选择题 Intact buoyancy is a term used to describe（）.
