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"I'm convinced that the Catri is the fastest production trimaran on San Francisco Bay."  Aaron Cooperband, owner, Dragonfly 800

"I was aboard an F28R in this race and I believe you crept up and passed us easily on the approach to Pt. Mugu"  Mike Dobbs, F28R crew, Kings Harbor Race 2003, broad reaching in ~15 knots of wind and choppy seas

HOW IT WORKS
The patented hydrofoil system contains a retractable, inclined daggerboard (Bruce foil) in the forward part of each ama and additional foils at the stern of the amas. The final foil is mounted on the rudder. At boatspeeds of above 5-6 knots the horizontally mounted rudder foil comes into action, minimizing back wave, and associated drag at the stern of the main hull.

As wind strengths increase, the hydrofoil system comes into full action. On any point of sailing, other than running downwind, the Aegean Catri 27 is supported primarily on three points: the rudder mounted foil and the two leeward ama-mounted foils.  The V shaped bottom of the leeward ama skims the water surface, minimizing drag (and thus maximizing speed and efficiency).  Lift to windward (prevention of leeway) is provided by the forward ama-mounted hydrofoil (being angled at about 50 to the horizontal, it provides both horizontal and vertical lift).

The forward mounted daggerboards are asymmetrical  foils which are intrinsically much more efficient at providing lift than a conventional symmetrical centerboard: thus, the windward performance of the Catri is exceptional. The leeward ama acts as a powerful water surface sensor, ensuring that the rear foil is always correctly angled to the water surface. There are minimal moving parts (except for raising and lowering the forward ama mounted foil, as you would with a conventional centerboard), and the hydrofoil system is largely self-tending.

"With the wind now around 20 knots and monohulls wiping out, the boat was always under control."  David Collins, owner, F25C

"A rudder feel to write home about, no kidding." Gunnar Svensson, owner, Catri 26

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