“We had two awesome races against him, so we always knew it was in us, but we just had to perform on the last day,” which they did in convincing style, despite losing a man overboard in one race of the final.

Sailing with Robertson were a team of impressive young sailors from the Royal New Zealand Yacht Squadron, Hayden Whitburn, Garth Ellingham, James Williamson, William Tiller and Brad Farrand.

As well as the Warren Jones Memorial Youth Trophy, the winner’s spoils include invitations to the Spanish Open Match Racing Championships, and the Danish Open as well, plus a cheque that will go some way towards the expenses of getting to Europe for these regattas.

After a morning of very light and shifty winds, the legendary Fremantle Doctor eventually found its way up the Swan River by mid afternoon, giving steadier conditions for the final.

The racing with Evan Walker was always going to be tight, and the first heat of the final showed just how tight, when the Australian skipper tried to sneak across the Kiwi team’s bow, and ended up with a hole in his boat.

On the final leg of the second race the lead changed three times, with Walker just grabbing the point, but Robertson took charge of the decider and didn’t let go, to claim the trophy which was originally given to the crew of Australia II by the New York Yacht Club at the America’s Cup Jubilee in 2001.