INTERNATIONAL CLASS ASSOCIATION World Championships X-41 World Championship 2010 · Arendal · Norway · 3 - 8 August X-41 World Championship 2009 · Scarlino · Italy · 14 to 20 September X-41 International Championship 2008 · 16 to 19 July 2008 · Copenhagen, Denmark European Championship 2010 · 2 to 4 September, Scarlino · Italy X-41 European Championship 2009 · Kiel, Germany · 22 to 28 June