470 (dinghy)

470 (dinghy)
Barbetorte · CC BY-SA 3.0 · source
Name	470
Designer	André Cornu
Year	1963
Role	Two-person dinghy
Length	4.70 m
Beam	1.68 m
Hull	Fiberglass
Rig	Bermuda sloop

470 (dinghy)

The 470 is a double-handed monohull sailing dinghy designed by André Cornu in 1963 and adopted widely for international sailing competition and Olympic Games classes. The design became central to World Sailing events, International Sailing Federation circuits, and national yacht club championships across France, United Kingdom, Australia, Japan, and United States fleets. Major regattas such as the World Championships, European Championships, Asian Games, Pan American Games, and Mediterranean Games have featured the class alongside keelboat classes like the Star (keelboat), Finn (dinghy), and Nacra 17.

Design and development

André Cornu conceived the 470 in the context of postwar yacht design innovation influenced by designers like Olin Stephens, Jack Holt, and Uffa Fox, aiming for a planing hull that balanced performance with accessibility. Early development trials involved shipyards in France and testing at venues such as La Trinité-sur-Mer and Marseille, with construction techniques derived from fiberglass pioneers like Berry Brothers and practices used in Sparkman and Stephens projects. The class association, modeled after frameworks like the International Olympic Committee recognition processes and overseen by World Sailing, codified class rules covering hull shape, spars, and sail dimensions to preserve one-design integrity.

Specifications

The class rules specify a length overall of 4.70 m, a beam near 1.68 m, and minimum hull weight consistent with standards set by builders such as Zevan Boats, LaserPerformance, and Harken-equipped lofts. The 470 carries a mainsail, jib, and asymmetric spinnaker on a Bermuda sloop rig with a centerboard and trapeze for the crew, comparable in sail plan complexity to classes like 49er and 470's contemporary counterparts. Spars typically use aluminum or carbon fiber from manufacturers such as Selden, Z-Spar, and Mastcraft, while running rigging and hardware often come from Ronstan, Harken, and Spinlock.

Racing and competition

The 470 is contested at class-regulated regattas including the 470 World Championships, continental championships like the European Championships and Asian Championships, and major multi-sport events such as the Olympic Games and Pan American Games. Fleet racing formats follow race management standards from World Sailing and employ protest procedures based on the Racing Rules of Sailing adjudicated by judges from associations like the International Sailing Federation. Notable venues hosting 470 regattas include Aarhus, Hyères, La Rochelle, Enoshima, Weymouth and Portland, and Marina del Rey.

Olympic history

Selected as an Olympic class in 1976 for Montreal competitions, the 470 has been sailed in both men’s and women’s events and mixed formats, paralleling other Olympic classes like Laser, Finn, 470 (Olympic counterpart)', and Star over successive Olympiads. Olympic regattas featuring the 470 have occurred at venues including Sydney Harbour for the 2000 Summer Olympics, Athens for the 2004 Summer Olympics, Beijing for the 2008 Summer Olympics (sailing events in Qingdao), and Tokyo for the 2020 Summer Olympics (held in Enoshima). National Olympic committees such as Australian Olympic Committee, British Olympic Association, French National Olympic and Sports Committee, Japan Olympic Committee, and United States Olympic & Paralympic Committee fielded crews who progressed through selection regattas and world championship qualification.

Performance and handling

The 470 is known for responsive upwind performance, planing downwind with an asymmetric spinnaker, and tactical demands similar to high-performance dinghies like the 49er and technical skiffs exemplified by the 470 class's emphasis on teamwork. Crews use hiking and trapeze techniques standardized in training programs run by federations including the Royal Yachting Association, Fédération Française de Voile, Australian Sailing, and Japan Sailing Federation. Handling characteristics depend on sail trim, mast bend, and crew weight distribution—areas of focus in coaching by figures from national teams and clubs at training centers such as Sailability initiatives and performance units at Nottinghamshire and Auckland.

Builders and variants

Construction has been undertaken by builders including Harken, Zevan Boats, Beneteau-affiliated yards, and specialist builders in France, Spain, Portugal, and United Kingdom. Variants include standard one-design hulls and limited development rigs using carbon spars or upgraded fittings supplied by companies like Selden and Z-Spar, with class associations approving modifications under tight rule control to preserve parity, similar to governance in classes like the Laser Standard and Flying Dutchman.

Notable sailors and records

Prominent 470 sailors have included Olympic medalists and world champions from national programs such as crews from Australia (including athletes from Sydney and Melbourne training centers), Great Britain with links to clubs on the River Thames and Cowes, France with competitors originating in Marseille and La Rochelle, Japan with sailors from Enoshima and Kanagawa, and Argentina with competitors trained in Buenos Aires. Record achievements in the class have been set at World Sailing events, national championships organized by federations like the Royal Yachting Association and Fédération Française de Voile, and Olympic podiums at Los Angeles, Barcelona, Rio de Janeiro, and Tokyo editions.

Category:Dinghies