Got me wondering, it seems that FAI have separate classes for...
Ballooning
Class D gliders
15m gliders
World class gliders
World class gliders
Parachuting
Manpowered (Okay, I can just about understand that one, men do usually have a bit better power to weight - hence different olympic classes.)
Hang gliding
Except that looking closer, they're actually divided into "feminine" and "general" - so effectively there's an open class, and then a separate class for women only.
Seems rather like something out of the 19th century.
G