The International 10 Rater (10R) is a class of radio controlled sailing yacht used for competitive racing. It is a measurement controlled classes administered by the International Radio Sailing Association. The class is a designated IRSA International class entitled to hold World Championships officially recognised by the World Sailing. A 10 rater is the longest and tallest of all the international classes and has rules that allow the most scope for development.

Year	Gold	Silver	Bronze	Ref.
1999, Changi  Singapore	Graham Bantock (GBR) Design - Prizm (Own Design)	Philip Playle (GBR) Design - Prizm	Mark Dennis (GBR)
2016, Lake Garda  Italy	Brad Gibson (GBR) Trance (Own Design)	Graham Bantock (GBR) Diamond (Own Design)	Christophe Boisnault (FRA) Diamond
2018, Biblis  Germany	Brad Gibson (GBR) Trance (Own Design)	Christophe Boisnault (FRA) Kamsin	Matteo Longhi (ITA) Nioutaine	[1]
2020, West Kirby  United Kingdom	Cancelled COVID 19
2023 Castiglione del Lago  Italy	Matteo Longhi (ITA) Design - "Trance" by Brad Gibson	Graham Bantock (GBR) Design - "Diamond" (Own Design)	Patrice Montero (FRA) Design - "Diamond"	[2][3]

Unclear of the status of these events as the International Radio Sailing Association only joined ISAF in the mid 1990s.

Event	Gold	Silver	Bronze
1975, Gosport	Lennart AKESSON (SWE)
1978, Durban	Squire KAY (GBR)
1980, Ottawa	Squire KAY (GBR)
1982, Dunkerque	Pierre JAHAN (FRA)
1987, Gothenburg	Janusz WALICKI (GER)
1991, Viry-Châtillon	Paul LUCAS (FRA)
1993, Lake Bonney SE	Janusz WALICKI (GER)

• International Radio Sailing Association Website
• ISAF 10 Rater Microsite Website