SHIPBOARD DAMAGE CONTROL, PERSONNEL PROTECTION, FIREFIGHTING AND CBR-D
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DAMAGE CONTROL MUSEUM
DC EQUIPMENT Museum
 
Damage Control Equipment
 
The Hydraulic Jack
 
Several types of jacks were on the repair locker hull allowance. The purpose of the jack was to move extremely heavy equipment or other objects over relatively short distances.

The hydraulic jack was extremely powerful and could lift ten tons, much more weight than a block and tackle or chain falls; however, it could not lift weight very far. In some cases, additional equipment was required and used in tandem, such as lift and push or pull jacks with a block and tackle or chain falls.

Its shape was more conventional than the push and pull screw jack. It had an 8-inch by 30-pound steel rectangular plate base and a hydraulic telescopic tube called a ram. The ram was controlled by hydraulic fluid inside the jack. A lever and handle at the base of the jack pumped the ram upward, and a screw on the opposite side, when turned open, released the pressure and let the ram down.

 
 
For more information, see the Index.