单项选择题
A.avoid any swing in a restricted space
B.shelter the ship from strong winds
C.prevent from touching with other vessels
D.make a convenience of cargo discharging
单项选择题 Installing tandem anchors on the same mooring line is referred to as（）.
单项选择题 In a crossing situation，a vessel fishing must keep out of the way of a vessel which is（）.
单项选择题 In a combination chain and wire rope mooring system，the anchor chain is deployed at the anchor end of the line to（）.