GBR Sail Numbers

GBR is the World Sailing national letter prefix carried on the sails of British-registered racing boats, for example GBR followed by the hull’s class or registration number. World Sailing (formerly ISAF) assigns each member nation a three-letter code under the Racing Rules of Sailing and the class rules; GBR identifies Great Britain, USA the United States, AUS Australia, and so on. The prefix plus number lets race officers and rivals identify a boat on the water and in results. The Royal Yachting Association administers GBR allocations for British classes.