title: International Marblehead
text: # International Marblehead
  
  The International Marblehead is a class of radio controlled sailing yacht used for competitive racing. It is a measurement controlled class administered by the International Radio Sailing Association.
  
  As a designated International IRSA class it is entitled to hold World Championships officially recognised by the International Sailing Federation. A Marblehead has a maximum length of 1290 mm and a maximum draught of ca 700 mm, but no minimum displacement. Up to six rigs are allowed, the tallest being about 2200 mm.
  
  ## Events
  
  ### World Championships
  
  | Yearvte | Gold | Silver | Bronze |
  | - | - | - | - |
  | 1998 Viry-Châtillon France | Graham Bantock (GBR) Rad (Own Design) | Guillermo BELTRI (ESP) | Janusz Walick (GER) |
  | 2000 Los Narejos Spain | Guillermo BELTRI (ESP) | Graham Bantock (GBR) Rok (Own Design) | Janusz WALICKI (GER) |
  | 2002 Ravenna Italy | Guillermo BELTRI (ESP) Skapel Mk4 | Graham Bantock (GBR) Prime Number (Own Design) | Martin ROBERTS (GBR) |
  | 2006 Fleetwood United Kingdom | Martin ROBERTS (GBR) Starkers 2 | Ante_Kovacevic (CRO) Prime Number | Zvonko_Jelacic (CRO) Rok |
  | 2012 Ploërmel France | Brad GIBSON (GBR) Grunge (Own Design) | Graham Bantock (GBR) Prime Numbers (Own Design) | Martin ROBERTS (GBR) Starkers 2 |
  | 2014 Gouda Netherlands | Brad GIBSON (GBR) Grunge (Own Design) | Graham Bantock (GBR) Quark (Own Design) | Ante Kovacevi (CRO) Quark |
  | 2016 Lake Garda Italy | Brad Gibson (GBR) Grunge (Own Design) | Matteo Longhi (ITA) UNKNOWN | Graham Bantock (GBR) Quark (Own Design) |
  | 2018 Biblis Germany | Brad Gibson (GBR) Grunge (Own Design) | Christophe Boisnault (FRA) Grunge (Brad Gibson) | Peter Stollery (GBR) Up (Roger Stollery) |
  | 2020 West Kirby United Kingdom | CANCELLED DUE TO COVID 19 | CANCELLED DUE TO COVID 19 | CANCELLED DUE TO COVID 19 |
  | 2023 Castiglione del Lago Italy | Patrice Montero (FRA) Grunge (Brad Gibson) | Christophe Boisnault (FRA) Expresso (Own design) | Ante Kovacevic (CRO) Grunge (Brad Gibson) |
  