Patent ID: 8459901

Claim:
A jacking system for jacking a structure, for jacking offshore platforms or vessels out of the water, said jacking system comprising: a leg having a longitudinal axis and comprising first and second engagement parts along said leg, said second engagement parts of said leg comprising at least one rail along said leg; and a guiding frame displaceable along said leg, said guiding frame comprising at least a first, second, third and fourth actuator, said actuators each having a first and second actuator part which in operation are displaceable with respect to one another along said leg, said first actuator part of said actuators coupled to said guiding frame, said second actuator parts of said actuators each coupled to a guide slidable over said rail and to first engagement parts for engaging and disengaging said first engagement parts of said leg for providing abutment in the longitudinal direction of said leg, said second actuator parts of said actuators displaceable along said leg past one another, and said actuators being arranged in pairs opposite one another with respect to a longitudinal plane of said leg, wherein, said second actuator parts are further coupled to further engagement parts for engaging the respective second engagement parts of said leg to provide abutment in the transverse direction of said leg, and said further engagement parts coupled to said actuators abut said rail in a direction having a radial component and in a direction having a tangential component and are slideable along said rail.