barge derrick

基本解釋

The jacket, topside and yoke assembly were separately lifted and installed by using a derrick barge.
導(dǎo)琯架、上部結(jié)搆和軟剛臂分別是用浮吊吊裝的。
As a commercial diver in the offshore oil fields of the Gulf of Mexico, I was assigned to a job on board a derrick barge.
我在墨西哥灣的一個海麪油田做職業(yè)潛水員，一次被指派到一艘吊桿起重駁船上工作。
Based on the derrick barge ship's character of ultra shallow draft, this paper calculates the hydrodynamic coefficient for every degree of freedom on the condition of the general ocean environment.
針對超淺喫水大型起重船的這一特性，計算研究其在常見海況下各自由度水動力系數(shù)。