Penta-Ocean Construction (POC) has signed a shipbuilding contract with Seatrium Limited for the construction of a heavy lift vessel (HLV) to support the installation of offshore wind turbine foundations, with an estimated cost of JPY 120 billion.
According to the company, the new HLV will be the world’s largest self-propelled vessel, featuring a 5,000-ton lifting crane and a unique U-shaped notch at the stern for monopile installation. This design minimizes ship motions, ensuring safer and more efficient installation, even in challenging metocean conditions. Additionally, it includes a battery storage system and methanol-ready specifications, aligning with carbon neutrality initiatives.
The vessel will also be equipped with a dynamic positioning system (DPS2) to enhance installation precision. The design and construction will involve multiple global experts: Ulstein Design & Solutions will handle the hull design, Huisman Equipment will supply the crane and upending system, and Seatrium Group will construct the hull.
The HLV will be jointly owned by a new subsidiary of POC and Fuyo General Lease Co., Ltd., each holding a 50% stake. The vessel’s construction is expected for completion by May 2028, with operations expected to begin in the autumn of the same year.
POC is confident that this new HLV will significantly advance the development of offshore wind power in Japan by ensuring safe, efficient, and cost-effective foundation installations.
