BUOYANT TURRET MOORING BUOY WITH A MOVABLE RISER-SUPPORTING FRAME

摘要

This invention relates to a vessel comprising a turret, rotatable relative to the vessel, a receiving cavity at the bottom of the turret, a mooring buoy having an annular buoyant member with a central shaft, mooring lines attached to the buoyant member and to the sea bed, a riser supporting frame movable within said shaft, the frame carrying a number of risers attached to a sub sea hydrocarbon well and being provided with an attachment member for attaching to a pull-in cable that is connected to a winch on the vessel for hauling in the riser supporting frame from a submerged position into the cavity.