The 12-Meter Class yacht Australia II, bearing sail number KA6, represented the Royal Perth Yacht Club in its 1983 challenge for the America's Cup . The defender, the New York Yacht Club, had held the cup since 1851, dominating challengers and sustaining the longest winning streak in sports. Australia II, skippered by John Bertrand faced Dennis Conner sailing the 12-Meter Liberty in the ocean off of Newport, Rhode Island, USA, September, 1983.  Australia II came from behind to prevail 4 races to 3. The victory was a landmark event for the nation of Australia, not to mention the New York Yacht Club.