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Green Navy vessel is a first for EODev fuel cell

At the Hyvolution 2025 exhibition in Paris, Green Navy announced that the PROMETEO, an electro-hydrogen catamaran, will be the first vessel to integrate the EODev REXH2 hydrogen fuel cell since the technology attained the Type Approval Certificate (TAC) from Bureau Veritas Marine & Offshore. The REXH2 is a secure “plug and play” model that utilizes Toyota’s advanced Proton Exchange Membrane (PEM) fuel cell technology.

Green Navy and EODev with the REXH2 hydrogen fuel cell at Hyvolution At Hyvolution 2025, Green Navy announced that the PROMETEO would integrate the newly certified EODev REXH2 hydrogen fuel cell. (Photo: Green Navy)

“Built by EODev, approved by Bureau Veritas, this hydrogen fuel cell technology is based on Toyota’s expertise. Thanks to this certified and innovative solution, our electro-hydrogen catamaran dedicated to passenger transport represents the future of clean energy solutions,” stated Charles Cardi, Green Navy CEO.

Selection of the EODev hydrogen fuel cell for the project was “justified by the maturity of the equipment, its adaptation to the marine environment and its operational safety,” according to Guy Saillard, naval architect and Green Navy project manager.

“The power range is perfectly suited for energy generation on a vessel of PROMETEO’s size and for continuously recharging battery packs,” he stated. “The batteries can deliver instant variable power to the propulsion system. The storage of hydrogen gas in pressurized bottles means that energy supplies can be adapted according to the vessel’s requirements and the operator’s needs.”

PROMETEO will be Europe’s first electro-hydrogen-powered catamaran designed for commercial passenger transport. Green Navy is working closely with various partners including SEE Merré and SECO Marine, as well as the Brittany Region, which is co-financing the project with an investment of Euro 1.5 million.

Rendering of the Green Navy PROMETEO electro-hydrogen catamaran. (Source: Green Navy)

“Our 24-meter catamaran will first be deployed in Brittany, France,” said Cardi. “It will be able to transport 200 passengers with zero emissions, offering a sustainable and scalable solution for regional maritime transport.”

Green Navy is preparing to launch – in collaboration with Bureau Veritas – the second level “Approval in Principle” (AiP) process. This will be carried out in close cooperation with SECO Marine, whose experience in decarbonized solutions and energy transition complements Green Navy’s vision, the company said.

“By undertaking the AiP process with Bureau Veritas, we benefit from the support of a trusted partner to validate the project’s feasibility. This is a key step as we will have the first safety review of the concept and all selected components, including the certified REXH2 fuel cell,” said Cardi. “Our goal is to complete this phase by June next year in coordination with the Ship Safety Centre in Brest. After that, we will order all the necessary hydrogen components for construction.”

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