O-Classes
O-Classes
O-125
2007 Toomas Mets (EST) World Champion 2005
O-175
2010 Manuel Zambelli (ITA) World Champion
O-250
2008 René Behncke (GER) World Champion 2009, 2010, 2011, 2013
O-350
2010 Alessandro Cremona (ITA) World Champion 2008, 2010, 2015
OSY-400
2010 Oliver Lucas (AUT), World Champion 2004, 2005 and 2010
O-500
2010 Tiziano Trombetta (ITA), World Champion 2000, 2003, 2004, 2005, 2007 and 2010
O-700
2010 Attila Havas (AUT/HUN), World Champion 1999, 2000, 2006, 2007, 2008, 2009, 2010, 2011
O-850
Renato Molinari (ITA), World Champion 1976 and 1979
O-1000
1976 Bill Rucker (USA)
O-1500/OI
Schulze (GER)
O-2000/ON
Billy Seebold (USA), World Champion 1977 and 1981
O-Unlimited/OZ
Billy Seebold (USA), World Champion 1978 and 1979
