單項(xiàng)選擇題

The catenary in a towline is（）.

A.a short bridle
B.the downward curvature of the hawser
C.another name for a pelican hook
D.used to hold it amidships

你可能感興趣的試題

單項(xiàng)選擇題

he carrick bend is used to（）.

A.add strength to a weak spot in a line
B.join two hawsers
C.be a stopper to transfer a line under strain
D.join lines of different sizes

單項(xiàng)選擇題

The biggest problem encountered when towing bridle legs are too short is（）.

A.retrieval
B.adjusting tension
C.excessive strain
D.hookup to main towline