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【单选题】

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

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更多“The catenary in a towline is（）.”相关的问题
第1题
[单选题] The anchors should be dropped well out from the pier while at a Mediterranean moor to（）.

A、eliminate navigational hazards by allowing the chain to lie along the harbor bottom  B、increase the anchor's reliability by providing a large catenary in the chain  C、permit the ship to maneuver in the stream while weighing anchors  D、prevent damage to the stern caused by swinging against the pier in the approach  

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第2题
[单选题] An advantage of the Christmas Tree towing method is to（）.

A、increase the towing hawser's catenary and provide more spring  B、reduce catenary，allow operation in shallower water，and to release one barge without breaking up the entire tow  C、enable one tug and its crew without any outside assistance to make up or break down the tow  D、provide rapid delivery of logs from the northwestern United States to Hawaiian sawmills  

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第3题
[] The most doubtful and unpredictable factor in a mooring system is the（）.

A、A.ability of the anchors to hold in a seabed  B、B.anchor chain catenary length  C、C.variability of the fairlead  D、D.angle of the flukes  

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第4题
[单选题] In a combination chain and wire rope mooring system，the anchor chain is deployed at the anchor end of the line to（）.

A、increase fatigue life of the system  B、reduce the time to retrieve the line  C、increase the holding power  D、reduce the catenary  

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第5题
[单选题] A towing vessel should be on the crest of a wave at the same time as its tow and in the trough at the same time. The term used to describe this is（）.

A、tow strain  B、catenary length  C、being in step  D、Williamson's Tow  

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第6题
[单选题] To reduce the amount of catenary you may（）.

A、shorten the hawser or increase the tug's speed  B、lengthen the hawser or reduce the tug's speed  C、place your tug in irons  D、make a sharp turn  

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第7题
[] Which statement is TRUE concerning hawser towing? （）

A、A.The catenary in a hawser should be sufficient so that the hawser just touches the bottom  B、B.The hawser is of sufficient length for towing when taut between tug and tow  C、C.Increasing speed usually increases the catenary in the hawser  D、D.Shortening the tow hawser generally decreases the maneuverability of the tug  

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第8题
[单选题] A term used to describe the dip in a towline that acts as a shock absorber is（）.

A、catenary  B、step  C、shock dip  D、bight  

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第9题
[单选题] A chain bridle is used when towing astern because it（）.

A、Is easy to connect  B、Provides an effective catenary and absorbs shock due to its weight  C、Makes rigging a swivel unnecessary  D、Prevents the tow from yawing by the drag of the chains in a seaway  

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