A J shaped foil holds the current world record on VESTAS Sailrocket 2. @ 65.45 knotscglazier wrote: ↑Wed May 29, 2019 4:43 amOn race boards (remember them) the very best riders whould ride with their boards edged away from them so their fins were the only thing in the water. This was like hydrofoiling but on the fins. Soon we all figured out that an actual hydrofoil setup worked even better.
On the speed boards that are currently used when going for high speeds, the fin is really of whats in the water along with the edge of the tail (as Peter says above) so really it is almost like hydrofoiling. The classic hydroil shape that we are familiar with has two wings, a fuselage and a mast but is certainly not the optimum shape for speed. Probably a J shaped hydrofoil like you see on Americas Cup boats will be the shape to set new speed records.
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