The main hoist winch and a system of elevators lift 1,250 tons of pipes and machinery through the 72 inches wide hole at the bottom of the boat.
主起吊绞车和升降机系统可通过船底72英尺宽的洞，提升1，250吨重的管道和机械。
2
The connecting hole on the upper arm of the hoist is penetrated by a connecting shackle connected with a main steel cable hanging rope.
吊具上臂的连接孔穿有连接卸扣，连接卸扣连接主钢丝绳吊系；
3
The hole of the auxiliary hanging rope connecting plate of the upper arm of the hoist is connected with an auxiliary steel cable chain hanging rope and a small steering rope.