On a jack-up barge, cranes serve several purposes and are involved in various jobs offshore, such as loading and cargo handling to and from supply vessels, barges, platforms, personnel transfer, support...

Every jacking system has its limitations in terms of weight. Those limitations are not the same for every operation mode. Usually you will find three types of limitations in the operation manual of the...

Jacking Control Systems are used to control the jacking system. This interface allows the operator to raise and lower the rig’s legs, so it could be positioned at the desired height above the water...

Planetary gearboxes serve a major role in the mechanics of jacking system. Their purpose is to provide a mechanical advantage, i.e. to achieve a greater output force (to pinion) than the input force (from...

In a rack-and-pinion system, motors drive the gearbox, which in turn drive the main jacking pinion. Motors produce modest torque, which is then multiplied by the gearbox and delivered to the pinion. Depending...