JKZ1 Rainbow   /   J Class Sloop

A repeat client, the former owner of Windrose of Amsterdam, showed his trust in the Dykstra team to be the Naval Architects and designers for this optimized J-Class yacht. The award winning J-Class Rainbow is built in aluminum and designed according to the JCA (J Class Association) maximum performance rules, based on William Starling Burgess' lines of the original 1934 America's Cup winner. The hull is from Bloemsma Aluminiumbouw and she is finished at Holland Jachtbouw (HJB). Art deco interior design is by deVosdeVries Design.

Dykstra Naval Architects have gained over 35 years of J-Class experience and where responsible for the rebuilds of the J-Class yachts: JK3 Shamrock V, JK7 Velsheda, JK4 Endeavour, performance refit of J5 Ranger, the new builds JK6 Hanuman and JKZ1 Rainbow and J Yankee in build. To keep the J-Class fleet and races alive and to encourage new build yachts to enter the field, JCA maximum performance rules have been developed, including allowing aluminum as building material. The rule is a VPP (Velocity Prediction Program) based rating system which puts limits to the performance. This rule has been developed by the Dykstra Naval Architects office and the Wolfson Unit in Southampton. The aim of the JCA, the Dykstra team and the rule is to bring fair & close racing to the fleet and to give all designs a chance of winning (on a handicap based system). Over the years the Dykstra team gained an enormous amount of hands-on information by racing on all the Dykstra J's in the current fleet.

J-Class Association