15 Meter Class Competition Sailplane, featuring full cockpit, and flight spoilers (VTOL up).

This class was created specifically to end the trailing-edge airbrake controversy in the Standard Class. The class has been very successful, being since its inception a feature of all World and European Championships. Technological development has eroded the performance gap that once existed between the Standard and 15-metre classes, which today is perceptible only in strong gliding weather. Some observers argue that the difference is not meaningful enough, that the 18 metre class is the natural successor to the 15 metre class and that the latter should be removed from World Championships to give space to new classes. Notwithstanding, the class has a sizeable following and official support into the foreseeable future.