Na, I think that might be a QB2. Mine was a 'B' class cat, ie., 20ftx10ft with 30ft mast and if I remember correctly, 300squ ft of sail built by Lindsay Cunningham. The Tornado is/was? a 'B' class cat. Thanx for the pics though.
The old Fireballs are still racing and had a good turnout at their Nats on Brisbane water this year, (Gosford SC).