This boat is also the prototype.... There was atleast 1 other design before the current one. I believe the boat in this pic was built by Martin Fisher in New Calidonia (under the Tropic of Capricorn) and was the first. 2 AHPC prototypes were built after that were a bit different.... These were raced around Oz for a season refining the boats before the Capricorn made its debute at the 2004 Worlds. The boat changed slightly from these upon comencement of production and changed again slightly after that particularly in the transom.... I am currently racing one of the first 2006 spec boats in Oz.