Abstract: Methods and apparatus for offshore operations including individually significant aspects comprising:1. Methods and apparatus for providing lateral force transmitting arch means extending across a vessel passageway which is laterally bounded by upwardly projecting portions of a substructure and bounded on the top by an integrated deck:2. Methods and apparatus for assembling an integrated deck with a substructure wherein there are effected horizontal and vertical shock absorbing action, motion dampening, and desired alignment; and3. Methods and apparatus for assemblying an integrated deck with a substructure wherein, at a relatively slower rate, an integrated deck is lowered into engagement with a substructure and, at a subsequent more rapid rate, a vessel initially supporting the integrated deck is vertically separated therefrom.

Abstract: A subsea grout distributor is disclosed for supplying grout sequentially to a plurality of subsea grout-receiving locations from a primary grout supply conduit. The subsea distributor comprises a frame submergible beneath a water surface. A plurality of secondary grout supply conduits have inlet ends secured to the frame and outlet ends communicable with respective ones of the grout receiving locations. A carriage is movably mounted on the frame. A receiver is movably mounted on the carriage and is connectible with an outlet end of the primary grout supply conduit which extends to the water surface. A displacing mechanism is provided for moving the carriage to sequentially position the receiver adjacent the inlet ends of the secondary grout supply conduits.

Abstract: A method and apparatus for connecting and disconnecting a buoyant structure and tower jacket characterized by mutually telescope portions of mated stanchions extending between the buoyant structure and tower jacket, which telescopingly mated stanchion portions are mutually secured by clamping means guidingly carried by the buoyant structure.