A FOOTING FOR A MARINE STRUCTURE SUPPORT LEG, AND METHOD OF INSTALLING AND REMOVING A JACK-UP PLATFORM

摘要

A footing for a support leg (4) for a marine structure (2) comprises a base (6) connected to the lower end of the leg and configured for supportive interaction with a seabed (B) and having a cavity (29) fluidly connected with one or more orifices (31) to the outside of the base. A housing (14) has an internal chamber (32) which at a first end is fluidly connected to the cavity (29) and at a second end has a fluid opening (20) to the outside of the housing. A valve assembly (12) is arranged in the chamber and operable between an open position and a closed position in order to control the fluid flow through the opening.