There are a dozen different classes of radio sailing yacht raced. Some are strict one-design i.e. all the boats are the same, whereas others are development classes, where the boat designs are all different shapes but are nominally the same speed. The Dragonforce65 (65 cm long) is strictly one design.
 
The DF Concept was initially conceived quite a few years back by John Tushingham and Mike Weston who had a desire to produce an affordable radio sailing yacht which sailed well, had all the tuning aids that a larger radio yacht had and that was available off the shelf so that fleets could grow quickly.

The DF65 is an affordable competition class yacht that can be enjoyed by serious competitors and non-serious hobbyists alike. Sleek lines and competition-developed sails make the DF65 outperform yachts that would be 10 times the price. There are more than 15,000 DF65s sailing around the world.