Company : All about Watt&Sea

Values & missions

Safety, comfort and respect of the environment

Watt&Sea’s aim is to conceive, manufacture and market energy systems for marine use, to help reduce the impact on our planet and to bring more freedom, comfort and safety to the yachtsmen: this is the daily motivation for the team of Watt&Sea.

The innovations of our hydro generators are the result of intensive work and research.
To provide its advantages to a large number of yachtsmen in the world is a strong mission and a challenge for the company and its team.

Team Watt&Sea

Yannick Bestaven

Yannick Bestaven is a knowledgeable and experienced offshore racer. He is also a talented businessman.  In 2007, on his own personal conviction, he launched a project to go round-the-world by using only renewable energy (sun, wind, water….). This conviction led to the conception of the Watt&Sea hydro generators, which were fine-tuned within its "2008 Vendée Globe race". Yannick has sailed 14 trans-atlantics and shares his time between his racing projects and the company Watt&Sea.


Matthieu Michou is a talented and perfectionnist engineer : he brings the best from the products he develops. Together with Yannick, they designed the Watt&Sea hydro generators whose output, performances and reliability are unequalled. In August 2009, they created the company, Watt&Sea.  Nothing stops this dedicated engineer.

Production and after-sales Manager

Florent Violet has joined the team in 2013. He takes care of suppliers' relation and insure after-sales' technical follow up.

Sales Department

Yola Dréan joined the team in 2015. She takes care of customers.

Sales Dept

Sabrina Huet, over 10 years experience in the Marine Industry for boat equipment manufacturers. She is in charge of the daily contact with customers.

Our story

A project born during the Vendée Globe race 2008

Yannick Bestaven makes the start of this race, with the ex «Aquitaine innovations» from Yves Parlier. He wishes to reduce its weight to increase its performance.  The idea is to substitute the 300 liters of fuel embarked to produce electrical energy on board, by a reliable and light hydro generator, respectful of the environment.

The stirring up adventure !

2009 : Yannick Bestaven and Matthieu Michou begin the adventure together. The limited liability company Watt&Sea is created in August 2009.

2010 : the hydro generators are presented on several international Boat Shows: Grand Pavois in La Rochelle (France), METS in Amsterdam (The Netherlands) and Nautic in Paris (France). They meet a great success.

December 2010 :  Watt&Sea is 2010 award winner of the Bateau Bleu price, organized by French Marine Industry Federation.

2011: many media present this major innovation. Heading on the sales development in France and internationally !