单项选择题

A tank which carries liquid is dangerous to the stability of a vessel when it is（）.

A.low in the vessel
B.completely empty
C.completely full
D.slack

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单项选择题

A semisubmersible which will not remain upright and will assume a list either to port or starboard is likely to have（）.

A.a large TCG
B.a negative GM
C.excessive ballast
D.insufficient deck load

单项选择题

A disk with a horizontal line through its center，equivalent to the summer load line，is called the（）.

A.deadrise mark
B.maximum allowable draft mark
C.plimsoll mark
D.tonnage mark

单项选择题

A deep draft VLCC (100，000 DWT+) navigating in a narrow channel or canal（）.

A.draws more water than when underway in deep water
B.draws less water with an increase in speed
C.requires less power for a given speed
D.steers better under full power