Abstract: A device for positioning and lifting a marine structure, particularly a platform deck, with the use of a U-shaped lifting vessel (1). The device has at least two adjustable lifting frames (12,12), each able to incline towards the middle of the docking area. Each of the lifting frames (12) consists of an upper horizontal lifting beam (13), preferably situated on a level above the top of the lifting vessel (1). The near-vertical part of the lifting frame (16) is connected to the lifting beam (13) in the upper end and in the lower end hinged (21) to the lifting vessel (1). The near-horizontal part of the lifting frame (18) is in one end connected to the lifting beam (13) and in the other end adjustably connected to the lifting vessel (1).
Type:
Grant
Filed:
June 7, 2000
Date of Patent:
January 11, 2005
Assignee:
MPU Enterprise AS
Inventors:
John Schia, Tor Ole Olsen, Kolbjörn Hoyland, Kare O. Haereid, Jorn Bastholm Hansen, Trond Landbö
Abstract: A lifting vessel (1) consisting of a lower U-shaped pontoon foundation (2a, 2b, 2c), a number of vertical columns (5) attached to the pontoon foundation and extending upwards and through the water surface, and each column (5) being free-standing above the pontoon foundation (2a, 2b, 2c). Methods for positioning, lifting and handling of a platform dock and a platform jacket is also described.
Type:
Grant
Filed:
June 7, 2002
Date of Patent:
December 30, 2003
Assignee:
MPU Enterprise AS
Inventors:
John Schia, Tor Ole Olsen, Kolbjorn Hoyland, Kare O. Haereid, Jorn Bastholm Hansen, Trond Landbo