Probably the Shark Cats.....out of Australia... I think he built them in the 70's. Buzzi was making his little outboard demons in about 1980....... The Shadow and Brownie(Cougar) cats came along in 1980-81.... I believe we debuted at the New York Boat show in January..... Brownie in Miami in February.
Active Cats( Cougar Designed) from Michigan arrived in about 1982..if memory serves.
BUT........ Yamaha made a hell of a big 22 foot cat in 1967.
Take your pick.