单项选择题
A vessel moored with two anchors，sometimes，at an exposed roadstead to（）.
A.aid turning the ship B.obtain a fine bearing C.increase ship swings to wind or tide D.lighten the stress of anchor chains
单项选择题 A vessel is wind rode when it is（）.
单项选择题 A vessel brought alongside should be fended off the towing vessel by（）.
单项选择题 A mooring system that results in a spread system without anchor buoys is called a（）.
