Austral 20 was a 6 m (20 ft) catamaran produced by Charles Cunningham in Australia in the early 1960s period of experimentation.
[1] By now I was earning a proper wage and I wanted to build my own trimaran.
I reckoned that I could rely on Lockie and other yachtie friends to advise me on boatbuilding, and save a lot of time by purchasing a ready-made main hull.
No-one, of course; but Charles Cunningham was turning out fibreglass shells for his 6-metre Austral 20 catamaran.
I bought one of these, decked it with plywood, built timber-and-ply crossbeams and floats to Lockie's design and fabricated much of the hardware from stainless-steel plate.