Community Research and Development Information Service - CORDIS


Offshore Construction and Decommissioning Vessel - OCDV

Project ID: ENK6-CT-1999-00018
Funded under: FP5-EESD


The objective of the OCDV project has been to develop a concept for a new type of heavy lift vessel devoted to perform safe, environmentally friendly and cost-effective removal and installation of offshore platforms, where the entire platform Topsides and Jackets are removed (or installed) in single lift operations.
Importantly the new concept will make significant reductions in the requirement for offshore personnel, support vessels, offshore accommodation and shuttle transportation, beneficial to overall safety, as well as costs, when working in a potentially hostile environment such as the North Sea. The dismantling onshore at a purpose built facilities under controlled industrial conditions will be more cost effective, safer and environmentally sound than any method of offshore dismantling.
The developed heavy lift vessel, also named Offshore Construction and Decommissioning Vessel (OCDV) takes the form of a U-shaped floater which is vertically moored and tensioned to "active" suction anchors in order to almost eliminate the vessel swell and wave induced vertical motions. The load transfer operation of Topsides and other heavy construction elements to/from the vessel will then be better controlled and thus avoiding damage to the structures in the installation/removal operation and it will improve safety for the personnel involved in this sensitive operation.

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