Japan-based classification society, ClassNK, has granted approval in principle (AiP) for a conversion plan of a medium-sized self-elevating platform (SEP) vessel. The vessel will be used for the installation of large wind turbine generators (WTGs) on a semi-sub floater in port, jointly developed by TOA Corporation (TOA), NIHON SHIPYARD CO., LTD (NSY), and Japan Marine United Corporation (JMU).
This project addresses the current challenge of a lack of port facilities for installing a large wind turbine on a foundation at ports in Japan. The solution involves the conversion of a medium-sized SEP vessel to be used as a jacked-up tall crane in a port, enabling the installation of large wind turbines even at ports without adequate facilities. TOA, NSY and JMU jointly researched and developed this method based on an SEP vessel equipped with a 1250 t crane under construction at JMU shipyard. The vessel will be co-owned by two companies, including TOA Corporation, upon delivery.
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ClassNK conducted a review of the conversion plan in accordance with Part O of the Rules for the Survey and Construction of Steel Ships, and issued the AiP after verifying conformity to the prescribed requirements. This conversion plan is expected to promote the expansion of floating offshore wind power generation by providing a wider range of base port options.
As a certification body, ClassNK is committed to supporting advanced initiatives aimed at the broader adoption of offshore wind power generation and contributing to the decarbonisation of society.
