单项选择题
Which mooring line prevents sideways motion of a vessel moored to a pier（）.
A.A line led forward from the bow B.A line led aft from the bow C.A line led in the same direction as the keel D.A line led at a right angle to the keel
单项选择题 When lowering lifeboats in heavy seas，a good practice is to rig frapping lines（）.
单项选择题 What term indicates the line drawn at the top of the flat plate keel（）.
单项选择题 What is TRUE about hoisting operations（）.
