Jim Brown has been designing multihulls since the 1960s, following his association with designer Arthur Piver. He is best known for his work on the Searunner trimarans and as the inventor of the Constant Camber boat construction method.
He worked in partnership with John Marples for more than 20 years, developing the line of Searunner multihulls. Jim Brown also designs for Windrider. The Windrider 16 is claimed to be the first roto-molded polyethylen trimaran ever built.