单项选择题
A.move aft B.move forward C.move lower D.remain stationary
A.made only of wire rope，due to possible weather conditions B.that will have the tow on a crest while your vessel is in a trough C.that will have the tow on a crest while your vessel is on a crest D.with little dip to gain maximum control of the tow
A.increase control of the tow B.prevent the towing vessel from going in irons C.make the towing vessel less maneuverable D.reduce shock stress on the towing hawser