Pretty amazing sailboat design. Huge weight saving by eliminating a keel and instead having an outboard hydraulic hydrofoil generating force like a buttress holding the sailboat from heeling (heeling is lateral roll or tilt caused by force of wind on the sail versus drag of the hull in the water)
You can start at 2:19 in this video for an explanation of the "canting T-foils" that buttress the boat from the leeward side.
And you can start at 1:46 in this video for an analysis of hull design, with the lift created by the upper surface of the deck described at 5:03.
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