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Good to Sea
Designer of clean maritime transport

Green Catamarans
Acting sustainably and shifting our way of thinking: by designing boats equipped with electric-hydrogen propulsion, Green Navy is a major player in the energy transition and the decarbonisation of maritime transport. Innovation and the evolution of technologies are at the heart of our projects: at Green Navy, we offer innovative solutions to current energy and environmental challenges.
Modular superstructure, suiting your needs
A design conducive to the experience.
Green Navy has developed a unique and smart platform hosting modular superstructures that can be adapted to your requirements. Our ships are 25-meter catamarans (LOA), designed as versatile working tools. In long-term leasing contract or for sale, we offer a PAX, CARGO or MIXED boat.
Design, resistance, adaptability, weight: in partnership with G-sea design, Green Navy pushes the limits of traditional methods, by using calculation software which was until now used only for the design of boats intended for extreme navigation. What seemed impossible is your new reality.
Expertise and innovation
The Merré shipyard, a specialist in naval construction for over a century, produces our boats in France. Merré specifically works with port authorities, shipowners, and operators to provide the vessels needed to protect the environment.
The construction of our first catamaran (passenger version), named Prométéo, began in the third quarter of 2023!
Hydrogen electric propulsion
Electromobility: the future of clean mobility.
The challenge we undertake at Green Navy is to develop an innovative alternative to using diesel powered boats on our seas. By combining the most recent technologies on the market, we design boats which perform better, in terms of autonomy and respect of the environment, than diesel standards.
The propulsion system of Green Navy boats is unique since it allows the removal of the inverters-reducers, which are present on certain types of boats.
Our catamarans are thus equipped with systems that triple the efficiency of the propulsion chain, compared to the standards of thermal propulsion, thus enhancing the optimisation of the energy efficiency of our boats – which is our priority.
Our team of engineers has optimised the propulsion system and the architecture of the boat to reduce its mass and, therefore, optimise its energy efficiency. Our boats offer you an adaptable, efficient and environmentally friendly solution.
On board, different energy management strategies are used depending on the desired range. Two 115 KW engines propel our boats and are powered by Toyota fuel cells combined with intermediate storage batteries.

Our boats are, of course, powered with Green Hydrogen, derived from the electrolysis of water using renewable energy.
GH2 – zero emissions during production and use.
Impressive performance thanks to an intelligent propulsion management.
- Range of 480km at 8.3 knots (15km/h), approximately 36 sailing hours.
- Range of 440km at 9.3 knots (17km/h), approximately 25 sailing hours.
- Maximum speed of 11,2 knots (20km/h), or 14 knots on demand.
- Recharges in just a few hours.
Define your project
Regardless of your desired configuration, our boats are also available for medium and long-term lease but also for outright sale. Our team is available to study your project and meet your needs.
Leaflet
Legal Notices
Green Navy, is a simplified joint-stock company, registered with the R.C.S. of Quimper (France) under number 878 256 296, with VAT number FR95878256296, with a capital share of 162.000 euros, domiciled Route de Port la Forêt 29940 La Forêt-Fouesnant, whose beneficial owners are M. Rafael Perez Martinez et M. Grégoire Lebigot.
Director of Publication : Monsieur Rafael Perez Martinez
Email address of the Director odf Publication : atila.perez@green-navy.com
Company telephone number : +33(0)6 4880 9652
Creation, artistic direction et realization of the website : Mikado Publicis, Luxembourg.
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- Address : 38, avenue J.F. Kennedy, L-1855 Luxembourg