单项选择题
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
单项选择题 A current moving across a lock entrance toward the river or toward the dam is called a(n)（）.
单项选择题 A common occurrence when a vessel is running into shallow water is that（）.
单项选择题 （）is the vertical distance measured on the vessel’s side amidships from the load water line to the upper side of the freeboard deck or a point corresponding to it.