APPARATUS FOR RAISING AND LOWERING A FLOATING OFFSHORE PLATFORM

摘要

Apparatus for raising and lowering a floating offshore platform provided with legs which are movable relatively to it and which, in the operating condition, are supported on the bottom of the sea or on a substructure lowered to the bottom of the sea, characterized in that the jacking equipment is blocked against downward movement whenever the floating platform is at the highest point of the wave motion in the touched-down position of the legs.