BUILDING HULL CONSTRUCTION, PARALLEL MEDIUM BODY FOR A DOUBLE HULL BUILDING, LONGITUDINAL SUBCONJECT KIT, APPLIANCE FOR MOUNTING A FOREIGN WITH A LONGITUDINAL SUBCONNECTIONS SERIES AND METHOD OF BUILDING A HULL

摘要

The parallel midbody (132)for the hull of a tanker is fabricated of modules (124), each made of double-walled longitudinal subassemblies (108) welded to one another and to a bulkhead (118). The sub-assemblies are made of outer cylindrically curved plates (32) welded edge to edge, and inner cylindrically curved plates (32) welded edge to edge. Longitudinal rib plates (66) are extended between and are welded into joints between curved plates in the inner and outer hulls. The curved plates (32) are convex towards the exterior of the vessel. At respective transitions between the bottom and sides, the inner and outer hulls have bilge radii which approximate in size the radii of curvature of others of the plates including ones both adjacent to and remote from the bottom-to-side transitions. A fixture (82) for facilitating welding of the T-joints (104) of the subassemblies is provided. The subassemblies (108) and modules (124) are fabricated in an up-ended orientation. Each successively completed module (124) is tilted-over and joined to the growing midbody (132) with the aid of a variable buoyancy barge (120) and a caisson pontoon (134). IMAGE