The jacket, topside and yoke assembly were separately lifted and installed by using a derrick barge.
导管架、上部结构和软刚臂分别是用浮吊吊装的。
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.
我在墨西哥湾的一个海面油田做职业潜水员，一次被指派到一艘吊杆起重驳船上工作。
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.
我在墨西哥湾的一个海面油田做职业潜水员，一次被指派到一艘吊杆起重驳船上工作。
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