Abstract:
An apparatus (1') for transportation, installation and retrieval of marine structures (10) is disclosed and illustrated. It comprises at least two suitably connected vessels (1,2) with adjustable buoyancy, each having a first end (5) and a second end (8). The apparatus is equipped with lifting mechanism for lifting a marine structure on and from it. The vessels (1,2) are connected to each other at each said first end (5) at an angle (4) and are free at each said second end (8),thus forming a V-shape. The invention also embraces the methodology for transportation, installation and retrieval of marine structures, using the apparatus (1').
Abstract:
A vessel with drilling and workover capability is constructed rapidly in a shipyard or dry dock by using an existing vessel that has most of the required hull. Bow and stern sections (20, 22) of the existing vessel are separated to leave them at opposite ends of a shipyard space, and a mid hull section (24) is built in that shipyard space in the usual manner by welding together steel plates. The bow and stern sections are moved against opposite ends of the mid hull section and welded to it. Topside equipment is already on the bow and stern sections, and is added to the new mid hull section.
Abstract:
A tanker (1) is converted to a floating production ship by a vertical opening (1) being cut out in the hull (1) and a cassette-like plate structure (7) inserted in the opening. The cassette (7) is composed of plate elements (12, 13) which are designed to fit and connect with the cut elements in the hull's opening. The cassette (7) will thereby form part of the ship's hull strength. The cassette has a vertical shaft (8) for mounting a turret (14) in/near the ship's bottom area. The turret (14) is wet- mounted in the shaft.
Abstract:
A method of reinforcing a metal panel or pipe of an existing structure comprising the steps of attaching a reinforcing metal layer to said metal panel or pipe in spaced apart relation to thereby form at least one cavity between inner surfaces of said metal panel and said reinforcing metal layer, injecting an intermediate layer comprised of an uncured plastics material into said at least one cavity, and curing said plastics material so that it adheres to said inner surfaces of said metal panel or pipe and said reinforcing metal layer.
Abstract:
Disclosed is a hull (2) for a container ship (1), said hull (2) having a length and a beam (b), said hull (2) comprising: two hull sides (5), each hull side comprising outer shell plating (22) spaced from inner skin plating (23), a bottom (6) connecting said hull sides (5), a cargo hold area for stowing shipping containers (19) below deck, a plurality of transverse bulkheads (16, 17) dividing said cargo area longitudinally into cargo holds and container bays (12), each container bay (12) having a hatch opening (35), a transverse box structure (20) forming the upper part of said transverse bulkheads (16, 17), said transverse box structures (20) connecting said hull sides (5), a deck (29) surrounding said hatch openings (35), said deck (29) being formed by deck plating (30) and said deck (29) being adapted for supporting hatch covers (24) for covering said hatch openings (35) and for supporting above deck shipping containers (19),said deck plating (30) forming an upper side (25) of said transverse box structure (20) and said deck plating (30) being connected to an upper end of said inner skin plating (23), a lengthwise torsion box (31) being formed by connecting said outer shell plating (22) to said deck plating (30), two outer support structures (32), each outer support structure (32) extending lengthwise along a portion of one of the hull sides (5); characterized in that said outer support structures (32) provide support for at least one outer row of above deck shipping containers (19) at a level that substantially corresponds to the level of an upper surface of said at least one hatch cover (24) placed over said opening (35); and in that each hull side (5) comprises at least one lengthwise extending crew passageway (18) arranged in said hull side (5) between said outer shell plating (22) and said inner skin plating (23), wherein the torsion box (31) and the passageway (18) extend lengthwise over at least a portion of the length of the container ship through amidships.
Abstract:
A vessel (1) and a stern extension (4) for being mounted on the watertight hull (2) of a vessel as an extension to the stern, the stern extension comprising: a stern unit (5) extending in a rearwards direction from the stern, the stern unit comprising side faces (6) adjoined along a vertical center plane thereof, the side faces (6) providing a barrier (8) partly defining a stern unit enclosure (9), wherein the side faces (6) constitute a continuous extension of the hull shape of the stern; and a mounting mechanism for securing the stern unit to the hull of the vessel, wherein the stern unit is externally mounted on the watertight hull, thereby providing an extension of the stern without prolonging the watertight hull (2).
Abstract:
A method of preparing a tank ship (1) for sand transportation and fluidized unloading, wherein the method includes: - disposing fluidizing pipes (10) having inflow openings (12) and also a slurry inlet (34) for fluidized sand, within a sand cargo tank (4); and - connecting a slurry pump (38) between a slurry inlet (34) and an unloading pipe (40).