Since the hull generated by the student is aimed at being a representative hull of sailing catamarans produced in South Africa it was named Representative Hull 1 or RH1.

Catamaran hull ratio. This article was inspired by a question about the rocker line in the new 85m cat Design 256 and I want to stick to the point so we wont turn it into a book but Ill discuss two issues hull fineness ratio and some aspects of the rocker profile. The Prismatic Coefficient Cp is a measure of the fullness of the ends of a boat the higher the number the fatter the ends and - surprisingly - the more efficient at high speeds. It is derived by simply dividing the waterline length of the hull by the waterline beam of the hull.

Beam WL beam of the hull at the waterline in feet. Beam WL Hull Fineness Ratio Max. This puts me far beyond that LB ratio in the teens that you mentioned.

Hull Fineness Ratio HFR The Hull Fineness Ratio known as the hulls beam-to-length ratio is an interesting number. With such wide aft hull ends the boat will have a lot more buoyancy than I need. BeamLength ratio 58 Static stability about 55 knots.

MAXSURF a strip theory based seakeeping calculation package which uses slender body strip theory method is. Apr 06 2013 - 0954 AM. And if I bring the aft end width down to 16 inches the hulls then have a LB ratio of 301.

The formula for catamaran hull speed is 134wetted length12. Typically this will be 8-101 for a slow cruising catamaran or the main hull of most trimarans 12-141 for a performance cruiser and 201 for an extreme racer. H-16 Mast 26 feet approx 156 of boat length Boat is actually 16 feet 7 inches According to the Hobie site the H.

Optimising Hull Lines for Performance. Four values of catamaran hull separation distances were modeled corresponding to four values of SL the ratio of hull separation distance S to hull length L. Most modern catamarans have a LWL to Beam ratio of about 81.