Keppel Offshore & Marine Technology Centre Pte Ltd

Offshore Technology Development Pte Ltd

Keppel Fels Limited

Rune Henriksen

Kok Seng Foo

Asbjørn Mortensen

Toh Tung Wong

Cheng Choong Chan

Teng Kiat Lim

Hock Chye Michael Chia

Tom Aksel Waitz Østvold

Yeong Jin King

Asbjorn Mortensen

Chai Wah Koh

Tom Aksel Waitz Ostvold

Installation vessels and methods for offshore wind turbine installation are disclosed. In one embodiment, a cantilever mast is used to transfer of wind turbine components from an installation vessel to an offshore installation site and guide the transfer to prevent undesired swinging movements of the wind turbine components. In another embodiment, a main crane is used in cooperation with a guide arm to transfer and guide wind turbine components from an installation vessel to an offshore installation site.

Offshore wind turbine installation

A racking assembly for receiving and storing at least one pipe. The racking assembly comprises a set back assembly including a selectively rotatable member having a plurality of radial slots sized for receiving a portion of the pipe(s) in sliding engagement, and a base for supporting the pipe(s). The base is coupled to the selectively rotatable member so as to permit mutual rotation. A barrier is located about a peripheral edge of the base, such that the setback assembly rotates relative to the barrier. The barrier is arranged to prevent the pipe(s) from moving radially from the base. The barrier has a gap sized to permit selective lateral movement of the pipe(s). Mutual rotation of the selectively rotatable member and the base permit alignment of the gap and a selected slot of the selectively rotatable member, and thus permits the pipe stands to be moved laterally into the setback assembly.

Pipe handling system and method

A system and method for configuring and supporting mooring lines deployed on offshore structures, e.g. Spar-type platform, are provided with recessed portions that are located around the splash/ice zones for 'cutting' through waves. An offshore structure may be provided with a chain tensioning mechanism that applies a desired tension to a hull chain and mooring line during mooring. Upon mooring the offshore structure, a chain lock mechanism maintains the tension in the hull chain and mooring line, while the chain tensioning mechanism releases a portion of the hull chain which is to be stored in a chain housing which is fully submerged underwater. This way, the recessed portions of the offshore structure around the splash/ice zones would be substantially free of the hull chains. Additionally, a disconnect mechanism may be provided to allow quick and safe disconnection of the offshore structure from the mooring position.

System and method for mooring of offshore structures

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Norway, Norway

Rune Henriksen