Select your language

After an extensive period of R&D, a new foil racing board “Hydro” is now introduced into the Severne board range. This represents yet another major milestone for the Severne brand. Along with the introduction of the Hydro, a whole new breed of riders will be pushing the board to its limits on the racecourse all around the world.


Severne introduces the “Hydro” foil race board

Severne is thrilled to announce Mateus Isaac as the first-ever full Severne rider followed by Luuc Vanopzeeland, Adrien Mestre, Clement Bourgeois, and Sam Sills who also has been the lead developer of the Hydro foil race board.

What is “HYDRO”?

The Hydro foil race board program is designed using inventive technology and computer modeling for scale tipping performance across all foil racing disciplines. Hydro boards will be available from June 2022.


023 Severne Hydro Mateus Isaac Photo by John Carter 1016 lr

023 Severne Hydro Sam Sills Photo by John Carter 0189 lr

023 Severne Hydro Studio 7 lr


Designer/Developer Sam Sills

One of the main driving forces, as well as, the lead designer on the Hydro board project is Sam Sills. With a background in naval architecture and intricate knowledge of windsurfing, Sam has already worked his way onto the British Sailing team where he currently competes as an iQFOiL athlete.


BEng Naval Architecture
British Sailing Team – IQfoil Athlete
20 Years windsurfing racing experience

Top 3 recent results:
022 Palma World Cup – 5th
021 Silvaplana Worlds – 7th
021 Marseille Euros – 6th
2 x World Champion back in the Techno days


023 Severne Sam Sills 1


Designers’ notes 

Can you describe the process from inception to the introduction of the Hydro board range?

We started with a blank page and the focus of stability and aerodynamics. Several designs were engineered in 3D and built with a CNC process. We then ran comparative testing on the water in many locations with several concepts and looked to find the perfect balance over the range of conditions for each design. For example the 100 Hydro needed to have a much larger operating range and therefore has a slightly different shape concept to the rest of the Hydros.

Why does the Hydro look like it does? 

Without giving away design secrets, the shape is optimised for stability, low aerodynamic drag, early take off and maximum leverage over the foil. The deck convex promotes laminar airflow for longer over the board and you can actually feel this through the wind. The high volume and length increases the mass inertia and stabilizes the board in the air giving you “Autopilot” control. Cutaways help reduce the waterline, making takeoff and touchdowns more efficient.

The high rails give the rider more leverage when canted over to windward and this increases righting moment + forward drive. Ultra Low mast track, reduces the lever between Center of effort in the sail and foil and therefore increases forward drive and hence speed.

The tail bump on the deck has two purposes;
1# gives you a 6th sense when gybing so you can always find your balance.
2#gives you foot support to pump off when taking off in lighter winds.



Are there any key features that you would like to point out?

I think the key to this design is in balancing all the major design aspects, there’s a lot of innovations that were included, and to strike a solid balance without compromise is probably the key feature.

For racing you always have unexpected conditions and scenarios so you need a board that can perform in sub-perfect as well as champagne conditions.  We have also given the board a huge amount of tuning options, with a long mastrack, 5 x longitudinal footstrap inserts. This just helps any rider get set up exactly how they like.

What makes the Hydro stand out?

When you sail it, you’re just faster.  There’s no escaping the laws of physics. Other than that the bullet nose shape is quite a visually striking feature when you first see the design.

What was the design objective for the Hydro?

Low aerodynamic drag and maximum stability without compromising takeoff.

Who is the Hydro for?

It was initially designed for top athletes to push their foiling limits and provide them with the tools to win.

However, to be honest, the aspects of stability that make up a good race board, also make life easier for everyone when foiling, so freeriders really enjoyed testing the board and were genuinely surprised how much easier it was for them to make new P.Bs in speed.



Without your Support, Waterwind wouldn't exist. Become our supporter!

If you want to advertise with us, read here, or contact us.

Collaborate with us. Read here!

Buy our Gadgets! Visit our YouTube channel!


No comments