A hydrofoil lifts a board above the water on an underwater wing assembly. As water flows around the front wing, it creates lift. With enough speed and control, the hull rises and much of its drag is reduced. The rider maintains balance by shifting body weight and adjusting speed.
The five main parts of a hydrofoil
- Board: the platform for standing and transmitting pressure to the foil.
- Front wing: produces most of the hydrodynamic lift; area, profile, span and aspect ratio affect its behavior.
- Mast: the vertical link between the board and the underwater foil; its height determines clearance and leverage.
- Fuselage: the structural link between the mast, front wing and stabilizer; its length influences pitch behavior.
- Rear stabilizer: helps balance pitching moments and contributes to stability, turning and efficiency.
How does the foil start moving?
In pump foiling, the rider launches from a dock or another suitable starting position and maintains speed through rhythmic loading and unloading of the foil. Wing foiling uses a handheld wind wing to generate speed. Surf foiling and wake foiling use the energy of a wave or wake. In SUP and downwind foiling, paddling and moving water help initiate or maintain flight.
Why different wings feel different
Wings with greater area generally create more lift at lower speeds, while smaller wings usually require greater speed. Longer, narrower wings with a higher aspect ratio can reduce induced drag, but may be less responsive in rolling turns. Exact performance also depends on the foil profile, rider mass and conditions.
Build your DI LARA FOIL system
Explore wing sizes, review our component guide or begin with Build Your Foil.
Important: Always confirm component compatibility and follow manufacturer instructions. Wear a suitable helmet and flotation protection and maintain a safe distance from people and obstacles.