Skimmer Catamarans

Because of my formal education and hands on experiences with surface vessels and jet aircraft, I have optimized my catamaran hull shape with respect to "form drag, skin drag, and induced drag". My design creates very little bow wave, has less draft, goes faster and has more interior room.

These line drawings show some features of my boat hulls. She has a "Fine Fullness Forward," with a small U section that flattens out to a hard chine amidships but with a slight camber athwartships, that ends in a flat run at the transom. Aside from the Fluid Dynamics of the shape, it eliminates adding floors and soles (i.e. weight) which results in more head room in the hulls with out having to add height that adds unwanted windage. Also, this shape has about the same wetted surface as the famous "U" section. That famous U section tends to pitch pole and hobby horse. Boats with transoms of that design have more drag.

The slight fullness forward keeps the bow up, going off the wind. She has a flat run aft to reduce drag. She is designed for speed while giving a comfortable ride. She incorporates features of Sail Boards, Planing Sailing Dinghies & Power boats. Yet her beam of 3 ft. at the waterline (approximate 4 ft. at the deck) and a length of 45 ft. gives a length to beam ratio of 16:1. A 40-footer will be about 14:1 ratio. Even with this paradox of fine and full, she has a moderate weight carrying capacity with a relatively shallow draft of 18 inches on the larger hulls; only 12 inches on the 28 footer. If you want a Gin Palace who's only claim to sailing and speed is, "she is tied Fast to the dock," Then my boats are not for you.

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