It is hard not to be impressed by the inherent stability of the UptiP foils in recent racing catamarans (GC32, Nacra20 FCS, Flying Phantom, ... ). I wonder in what configuration these could be made useful in a HP?

If my understanding for a catamaran is up to date, the main foil is designed to carry 80% of the weight and the rudder foil about 20%. The vertical part of the main foil prevents leeway, the horizontal part provides lift, the twist and hook stabilize pitch, height and yaw. The rudder foil controls yaw and trims pitch. The main windward foil retracts, the rudder foils do not. 

Luc

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