单项选择题

A current moving across a lock entrance toward the river or toward the dam is called a(n)（）.

A.cutoff
B.outdraft
C.lockwash
D.springpool

点击查看答案&解析

上一题目录下一题

相关考题

单项选择题

A common occurrence when a vessel is running into shallow water is that（）.

A.the wake is less pronounced
B.the vessel is more responsive to the rudder
C.squat will cause a decrease in bottom clearance and an increase in draft
D.All of the above

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.

A.Buoyancy
B.Freeboard
C.Draft
D.Displacement

单项选择题

Your vessel is damaged and is listing to port. The rolling period is short. There is sufficient freeboard so that deck edge submersion is not a problem. What corrective action should be taken FIRST in regard to the vessel’s stability?（）.

A.Press up any slack double-bottom tanks to eliminate free surface
B.Flood any empty double-bottom tanks to add weight low and down
C.Jettison topside weights to reduce KG and KB
D.Shift any off-center weights from port to starboard