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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]
USA-17—a 90-foot-long (27 m) trimaran, type BOR90. A traditional paraw double-outrigger sailboat from the Philippines. A trimaran (or double-outrigger) is a multihull boat that comprises a main hull and two smaller outrigger hulls (or "floats") which are attached to the main hull with lateral beams.
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.
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.
In 1962, Piver built himself a 35-foot ketch-rigged trimaran named Lodestar and sailed it around the Pacific Ocean via New Zealand. [citation needed] In England, Cox Marine started building his boats and found a ready market, often with Americans who would sail them home. In 1964, Derek Kelsall bought a Lodestar bare hull, completed it with a ...
He constructed his first trimaran, a 40-footer with $600 that he borrowed from his grandmother in 1961. Although influenced by Piver's designs, Horstman diverged by using Boeing technology to make flush-decked sailboat ""with accommodation in all three hulls—the dreadnaught class of trimarans" [ 2 ]
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.
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 ...