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A design engineer by profession, Cross worked for Ford Motor Company, then spent 16 years with General Dynamics' Convair Division in their department of wind-tunnel model design and towing basin testing. [1]
Constant Camber 26 is a 26 ft (7.9 m) cruising sloop trimaran sailboat designed in the 1970s by John Marples featuring berths for two adults and two children. [1] [2] The constant camber hull is constructed using a single master template to produce each panel, resulting in a design with unchanging curvature, imparting extraordinary strength similar to an eggshell.
The vessel was designed by LOMOcean Design (formerly Craig Loomes Design Group Ltd.) and built by Calibre Boats in Auckland, New Zealand. [13] The wave-piercing trimaran design allowed for improved speed and stability. The boat was fully submersible, able to cut through 15-metre (49 ft) waves and go 7 m (23 ft) underwater. [2]
Jim Brown stayed with Piver's narrow-waisted hulls while introducing the centerboard, center cockpit, and cutter rig. Of the 47 multihulls we spoke outside U.S. waters, 13 were Brown designs. While poor payload capacity and hobby-horsing are owner complaints with the 31 and 37, his 40-footer gets high marks.
During Crowther's career, over 2500 of his designs were built. [3] A notable design was the trimaran Spirit of America, an early user of GRP-foam sandwich construction featuring composite beams with unidirectional fibres and turned-down ends. Crowther also developed 'bulbous bows' to reduce pitching, and thus increase speed when sailing upwind ...
The design concept comprises a narrow, long hull that cuts through waves. The outriggers then provide the stability that such a narrow hull needs. While the aft sponsons act as trimaran sponsons do, the front sponsons do not touch the water normally; only if the ship rolls to one side do they provide added buoyancy to correct the roll.
Kraken 18 was a day racing trimaran sailboat designed by Lock Crowther in the wake of his successful Bunyip 20 design, [1] [2] as a scaled-down version of the earlier Kraken 25 with similar performance. [3] Its smaller size and folding beams made it more practical and led to its greater success. [3]
Crowhurst became convinced that the trimaran model, with its potential for extreme speed, would serve him best to win the race. The Electron was based on designs for Arthur Piver’s Victress-class trimaran. However, significant structural and aesthetic deviations from the original designs were made at Crowhurst's request, in order to make the ...