As I said in my page on the 'Sailing Aerofoil'... "In the past, such an idea was met with complete scepticism and authoritative claims of "ABSOLUTELY IMPOSSIBLE".

At least you have modified the 'impossibility aspect' to "theoretical impossibility". I'm sure you would agree that there are two TYPES of knowledge... theoretical and empirical. The former is based upon 'scientific' belief and generally-accepted mathematical formulae (often which have proven to be erroneous); Whereas empirical knowledge is that which is based upon REAL (practical) experience, not 'theoretical' calculations.

I am not currently in a position to prove beyond doubt that a 'Sailing Aerofoil' is a real possibility, but let me point out that large sea-birds travelling in 'ground-effect' are not powered by engines and propellers, and although they may enter into GE through the 'powered' momentum of free-flight, seem to 'sail' in GE further than the initial input of inertia SHOULD allow for. Check it out the next time you are at the beach.

No, I am not referring to Jon Howes monofoil concept (a very interesting concept, which I believe has the potential to raise the WWSSR incrementally above the current record, but), which still depends upon one foil in the water.

Yes, I refer to a concept which sails completely free from the water surface. As to 'theoretical impossibility', I believe this THEORY will eventually be shown to be erroneous. (Perhaps sooner than you think). Don't get me wrong - I do not propose that this concept would be 'practical' for regular sail craft purposes, nor do I propose that the craft would be capable of sailing at substantial heights above the water surface (with current technology). Think about a thin lubricating dynamic air cushion which provides separation from the drag of a relatively smooth water surface for speed purposes only, and has the potential to increase the WWSSR to the 60 - 70 knot range.

Spend some time thinking about 'possibilities' rather than concentrating on what is generally considered 'impossible'. I do not believe in 'impossibilities'. Go ahead and call me 'crazy' - (boat designers are used to that)... Remember NOAH ? - everybody thought he was crazy too!

Cheers

Foxx