主绞车（40级和50级 ）采用气胎离合器换档，适合远距离操作，方便快捷。
The main drawworks (40 and 50 model) utilize air-tube clutch to shift gears, which are suitable for remote control, fast and convenient maintenance.
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。
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.
钻塔：主起吊绞车和升降机系统可通过船底72英尺宽的开口，提升1,250吨重的管道和机械。
Derrick: the main hoist winch and a system of elevators lifts 1,250 tons of pipes and machinery through the 72.
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