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Hull speed can be calculated by the following formula: where is the length of the waterline in feet, and is the hull speed of the vessel in knots. If the length of waterline is given in metres and desired hull speed in knots, the coefficient is 2.43 kn·m −½.
The J/24 is an international One-Design and Midget Ocean Racing Club trailerable keelboat class built by J/Boats and defined by World Sailing. [1] The J/24 was created to fulfill the diverse needs of recreational sailors such as cruising, one design racing, day sailing, and handicap racing.
No-Vac at speed, 1933 Miss Jarvis on transport trailer, 2010 Hydroplane Miss America II on the Maumee River in Toledo, 1920. A hydroplane (or hydro, or thunderboat) is a fast motorboat, where the hull shape is such that at speed, the weight of the boat is supported by planing forces, rather than simple buoyancy.
Donald Joel Aronow (March 3, 1927 – February 3, 1987) was an American designer, builder, and racer of Formula, Donzi, Magnum Marine, Cary, and Cigarette Racing Team speedboats.
Introduced in 1979, the aim was to build a boat that would be comfortable for a family to cruise or daysail without compromising speed and performance. By striking this balance, the J/30 is a competitive racer that can be comfortably handled by sailors of all age and experience levels. The J/30 ceased production with hull number 545, built in 1986.
The wing keel model has a PHRF racing average handicap of 153 with a high of 165 and low of 141. It has a hull speed of 7.09 kn (13.13 km/h). [1] [2] [5] Catalina 320 Mark II Improved model introduced in 2006. This version has a draft of 6.25 ft (1.91 m) with the standard keel and 4.33 ft (1.32 m) with the optional shoal draft wing keel.
Its displacement/length ratio is 193, which is moderately low, meaning there is not much volume below the waterline and that there is a definite emphasis on speed. But because the 36.2 is intended to be an all-around family boat, the sail area to displacement ratio is a relatively conservative 15.9.
The boat has a draft of 4.50 ft (1.37 m) with the standard keel. The boat has a PHRF racing average handicap of 192 with a high of 196 and low of 189. It has a hull speed of 6.17 kn (11.43 km/h). [7] [8] C&C 27 Mark I C&C 27 Mark II C&C 27 Mk III C&C 27 Mark IV C&C 27 Mark V C&C 27 Mark III Model in production from 1974 to 1981, with 480 produced.