单项选择题
A backlash below a lock is defined as a（）.
A.current setting your vessel on the wall
B.current setting into the lock chamber
C.an eddy working along the lower guide wall
D.current setting counterclockwise
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相关考题
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单项选择题
A “spring line” is（）.
A.any wire rope used for mooring
B.a fire-warp
C.a mooring line running diagonally to the keel
D.a mooring line perpendicular to the keel -
单项选择题
A “sheepshank” is used to（）.
A.keep a line from fraying
B.join lines of unequal size
C.stop off a line
D.shorten a line -
单项选择题
A “reaching” course is one in which the wind（）.
A.comes directly over the bow
B.comes directly over the stern
C.comes over an area extending from broad on the bow to the quarter
D.has no effect on the vessel
