[MarketingJason]

Interesting. My first thought was "isn't it wind powered? What are they powering?". Turns out anything below the water line like the hydrofoils are independently battery powered. The cyclists are pedaling to pressurize a hydraulic system that is used to trim and adjust the sails as opposed to the teams working hand crank systems to make adjustments directly. I guess I am just surprised they need that much potential energy for the sails-alone. I'd imagine it's a careful balance between building and storing the energy needed for the next series of adjustments without going too-far and exhausting the crew. Based on the focus on increased wattage output and not increasing resistance with constant output, it sounds to me like they are powering a generator for pressurizing a reservoir versus pressurizing the reservoir directly.

[aidos]

I believe the power is used to control the wing (sail) and the foils. These boats don’t have a keel and instead rely on foils that they drive into the water. I think they’re adjusted constantly as they fly and they swap from side to side as they tack.

Here’s a clip that gives a bit of an idea.

https://youtu.be/VQUl_hf6yo8?si=T3kDqScMxsu0krQF

[MarketingJason]

In the video someone else posted, it's said that the hydrofoils are independently powered https://youtu.be/Gvkx6oF_Zyk?si=PXTcckfCQzPZYmrR&t=660