Test / Birdyfish : A simple flying boat, easy to build and to sail !

© Martin Viezzer

In the first part of our test of the Birdyfish, a flying dinghy on foil, we come back to the philosophy of the project and its consequences on the construction and design of this small sailboat, both accessible and fast.

Three fellow students with a passion for sailing

As is often the case with business creation adventures, Birdyfish was born out of a friendship between 3 study buddies in La Rochelle, Pierre Rhimbault, Alban Satgé and Jean-Baptiste Morin. During their last year of engineering school at EIGSI, Pierre and Alban worked on the idea of a foil dinghy. Already a high-level sailor during his studies with the French 470 youth team, he became a professional match-race skipper, then a Figaro skipper in the CMB Course au Large program, after graduating. But the project is not abandoned and obtains awards that finally convince its initiators to create the Birdyfish company in September 2018 to take the plunge.

Le Birdyfish a pour programme d'ouvrir le vol en bateau à tous, y compris les jeunes
Birdyfish's program is to open up boat flying to everyone, including young people

A double-handed dinghy, flying and accessible

For Pierre Rhimbault, the objective was clear from the start: to make flying accessible to inexperienced yachtsmen, at a reasonable budget, on a dinghy designed for double-handed sailing. To achieve this, he set the course from the start to the naval architect in charge of the project. "The specifications we gave to Etienne Bertrand put on the same level the boat's ability to fly and its ease of construction, with a view to being able to do series. With his experience of the Mini 6.50, and the fact that he is building the prototype, we were confident that we would be able to build a boat without any problems" explains the founder of Birdyfish.

With its marotte and its beautiful width of 1.90 meters, the sailboat of 4.70 meters long can accommodate according to the regulations 3 persons or 225 kg, in design category D.

Un dériveur à foil aux formes et à la conception simple
A foil dinghy with a simple shape and design

Use the right materials for the right purpose

To combine performance and cost control, the hull is made of foam-fiberglass sandwich and polyester resin. The construction is made in infusion. For reasons of weight and strength, carbon and epoxy resin were chosen for the foils and rudder. In order to rationalize, the starboard and port foils are interchangeable. To do this, the 3D printed end pieces used to secure the appendage in the lowered position are simply replaced.

The mast is made of standard aluminum profile, made with AG Spar, remaining in the most common materials. The final weight of the equipped boat is 135 kg.

In a concern for sustainable development, Birdyfish is also working on bio-composite alternatives to fiberglass. The company has recently produced a first hull made of flax fibers with Roland Jourdain's company Kaïros, but no commercial offer is planned at this time.

More articles on the theme