You are using an outdated browser For a better experience using this site, please upgrade to a modern web browser. Subscribe Get Daily Email Subscribe --> Contact Us Sign in Home News & Features Compliance Costs Bunker Prices Bunker Intelligence EMEA News Latest Features World Americas EMEA Asia/Pacific Home News & Features EMEA UK Hydrogen Vessel Retrofit Wins LR Certification UK Hydrogen Vessel Retrofit Wins LR Certification by Ship & Bunker News Team Thursday June 11, 2026 Tweet Follow @shipandbunker The vessel will be the first seagoing vessel retrofitted with hydrogen propulsion. Image Credit: LR The UK -flagged research vessel Prince Madog has received certification from Lloyd's Register (LR) for its hydrogen fuel cell retrofit project. The certification covers the vessel's hydrogen storage system and the integration of fuel cells, batteries and associated equipment, LR said in an email statement on Wednesday . The project is being delivered by UK-based vessel owner and engineering company O.S. Energy in partnership with hydrogen propulsion specialist Ecomar Propulsion . “This significant milestone reflects the hard work and dedication of the entire project team over the last 3 years, Oliver Cornforth , Head of Projects at O.S. Energy, said. “We now look forward to completing the Hydrogen-Battery retrofit and demonstrating the zero-emission operation of the Prince Madog.” The project was launched in 2023 and the conversion was valued at £5.5 million . The certification follows an earlier approval in principle from Lloyd's Register and was presented at Seaworks 2026 in Southampton . O.S. Energy said the project is expected to result in the first seagoing, crewed hydrogen vessel retrofit of its kind and will demonstrate zero-emission vessel operations once completed. Ship & Bunker News Team To contact the editor responsible for this story email us at [email protected] Also in the News Fratelli Cosulich New Methanol-Ready Bunker Tanker Heads