Patent ID: 6149350
Filing Date: 2000-11-21
Classification: B63B,B63C,E02B

Abstract:
A lifting apparatus for lifting a multi-ton package such as a deck package, sunken vessel, or offshore jacket, comprising:a) a pair of barges, each defining a base that can support a large multi-ton load;b) a truss supported respectively by the barges and positioned about the periphery of the package for forming a load transfer between the barges and the package to be lifted;c) each said truss including at least one diagonally extending lift boom, each lift boom having a lower end attached to a barge and an upper end that can be attached to the deck package;d) lower connections for forming attachments of the truss to the package;e) each boom having a free end with a lifting end portion;f) a receptacle attached to the package that receives the lifting free end portion;g) wherein the lifting end portion engages the receptacle as the boom angle of inclination is gradually increased; andh) means for raising and lowering the combination of the truss and the supported package.