In addition to executing the offshore work scopes, Maersk Supply Service is delivering the project as an integrated solution including project management, engineering, subcontractor management, offshore planning, interface management, and management of the recycling and waste disposal of recovered infrastructure.
The lift of the 26m-long South towhead, weighing 260 tonnes, represents the heaviest lift performed from a Maersk Supply Service vessel to date, and the first time
such a structure has been lifted and recovered by a subsea construction vessel. With its 400-tonne active heave-compensated crane, the I-class vessels are an effective, cost efficient platform for subsea recovery.
Having been installed with no conventional features for lifting, the Leadon towheads were secured to the vessel’s crane and recovery slings using remotely operated vehicles. The towheads were then lifted by Maersk Inventor’s 400-tonne crane, and a tagging winch system was used for rotating the structures