单项选择题 （）refers to the depth of a vessel below the waterline，measured vertically to the lowest part of the hull，propellers or other reference points.

单项选择题 Your vessel was damaged and initially assumed a significant list and trim; however，further increase has been slow. Based on this data，what should you expect?（）

单项选择题 Your vessel is damaged with no list，but down by the stern. There is progressive flooding and trim by the stern is increasing. What is the effect on transverse stability after the deck edge at the stern is submerged?（）