Austral 20 (catamaran)
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|type = Catamaran
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|construction = Fiberglass
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|loa = {{Convert|6|m|ft|abbr=on}}
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|designer = Charles Cunningham
|location = Australia
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Austral 20 was a {{Convert|6|m|ft|abbr=on}} catamaran produced by Charles Cunningham in Australia in the early 1960s period of experimentation.{{cite web|url=http://www.reocities.com/howardstephenson/TRIMARANS.html|title=Trimarans|access-date=12 May 2015|author=Howard Stephenson|archive-url=https://web.archive.org/web/20160305200155/http://www.reocities.com/howardstephenson/TRIMARANS.html|archive-date=5 March 2016|url-status=dead}}
It was apparently produced in reasonable numbers by Charles himself.
{{cquote|By now I was earning a proper wage and I wanted to build my own trimaran. For someone who had never made anything more difficult than a doorstop, this was a major decision. 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. But who made stock trimaran hulls? 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.|author=Howard Stephenson}}