Good to Sea

Designer of clean maritime transport

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Green Catamarans

Acting sustainably and changing the way we think by designing boats equipped with electro-hydrogen propulsion, Green Navy is a major player in energy transition and the decarbonisation of maritime transport. Innovation and the evolution of electro-hydrogen technologies are at the heart of our projects. At Green Navy, we offer innovative solutions to the current energy and environmental challenges facing maritime transport providers.



Modular superstructure, suiting your needs

A design that enhances 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-metre catamarans (LOA), designed as versatile working tools. We offer a PAX, CARGO or MIXED option for sale or long-term lease.


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.






Tons of Freight

Our PAX catamaran offers unparalleled performance in the world of new maritime energies in terms of navigational comfort, independence and operational costs.

  • Complete reduction of the noise pollution and odour nuisance – an exceptional passenger experience compared to a diesel vessel.
  • Simplified design – a very attractive solution for commuters and tourists.

Our CARGO catamaran: your smart freight transport solution.

  • Adaptability of hydrogen storage to the desired transport capacity – an adjustable configuration allows shipowners to carry out island/mainland refuelling missions.
  • Accessibility to city centres by river, in an environmentally friendly, safe and cost-effective way – a zero-emission goods transport solution, offering an alternative to congested road transport networks.

Our MIXED version is intended to transport both goods and passengers. A versatile concept, our multipurpose catamaran allows you to adapt your activity to suit market opportunities.


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, commenced in the third quarter of 2023.

Electro-hydrogen propulsion

The future of clean mobility.

The challenge we are undertaking at Green Navy is to develop an innovative alternative to diesel powered boats. By combining the most recent technologies in the market, we design and build vessels which perform better, in terms of flexibility and care for the environment, than diesel current standards.


The propulsion system of Green Navy boats is unique.


Our catamarans are equipped with electro-hydrogen systems that triple propulsion efficiency chain, compared to standard thermal propulsion. This enhances the energy efficiency of our catamarans primary focus.


Our team of engineers has optimised the propulsion system and the architecture of the vessel to reduce its mass and provide an adaptable, efficient and environmentally-friendly solution.

On board, different energy management strategies which are used depending on the desired range. Two 130 KW engines propel our boats are powered by fuel cells combined with intermediate storage batteries.


Our boats are powered with Green Hydrogen derived from the electrolysis of water using renewable energy.

guillemets GH2 – zero emissions during production and use. guillemets

Impressive performance thanks to an intelligent propulsion management system:

  • 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.
Courbe Courbe

Define your project


Regardless of your desired configuration, our boats are available for medium and long-term lease and outright sale. Our team is available to discuss your project and build a solution to meet your needs.

Guy Saillard

Co-founder of Green Navy, Guy is a naval architect and maritime expert with 50 years of experience. He has demonstrated his commitment to carbon-free mobility by working on the design and improvement of precursor boats in this sector – in particular, the Energy Observer and the Planet Solar. We owe to him the design of the Green Navy prototype boat.

Atila Perez

Founder of Green Navy (2019), Atila Perez is committed to reducing the environmental footprint in the maritime transport sector. Born in Mexico, he has lived in France since 1999. After an early career in the catering sector, Atila is now at the helm of three Carrefour retail shops.

Grégoire Lebigot

Partner of Green Navy, Grégoire is also the Chairman and Founder of VALLAIR, a Franco-Luxembourgish group specialising in the maintenance of airliners (MRO), as well as in the recycling activities of mature aircraft, engines and aeronautical components. With a cumulative experience of 30 years in aviation, notably at Airbus and Air France, Grégoire has developed a pioneering aircraft disassembly and cargo conversion business in Europe.

Charles Cardi

Our newly appointed Chief Executive Officer. Cardi is a maritime expert with cross-functional experience and a background in electro-technical studies, he joins the organisation from UNI Bateaux in Ajaccio, Corsica, where he was responsible for all sales and charter operations of motor yachts, catamarans, trawlers and NUC passenger boats.

Click here to read the press release: EN FR


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    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.

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