Arrangement for raising and lowering a floating offshore platfor

Details Arrangement for raising and lowering a floating offshore platfor Arrangement for raising and lowering a floating offshore platfor

1981-02-27

1983-08-23

Taylor, Dennis L.

Hydraulic and earth engineering

Marine structure or fabrication thereof

With work deck vertically adjustable relative to floor

254107, 405195, 405203, E02B 1708

Patent

active

044001118

ABSTRACT:
An arrangement for raising and lowering a floating offshore platform having legs which are movable relatively to the platform. The legs, in the operating condition, are supported on the bottom of the sea, and a jacking device is blocked against downward movement whenever the floating platform is at a highest point of sea wave motion in a touched-down position of the legs. The jacking device may be in the form of rope winches, with the drive of one jacking device being switched off and the rope winch of the other jacking device being released in take-up direction, while being blockable in payout direction in touched-down position of the legs.

REFERENCES:
patent: 2966336 (1960-12-01), Owen
patent: 3411750 (1968-11-01), Smulders
patent: 3474749 (1969-10-01), Williamson
patent: 3495806 (1970-02-01), Sutton
patent: 3628336 (1971-12-01), Moore
patent: 4227831 (1980-10-01), Evans

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