Sailing became Australia's most successful sport at the London Games as Nathan Outteridge and Iain Jensen took gold in the 49er skiff at Weymouth.
The duo added to Tom Slingsby's gold in the Laser class on Monday to make sailing the only sport so far to produce multiple gold medals for Australia at these Olympics, brining the nation's tally to five.
Outteridge and Jensen were assured of victory on Monday after amassing an unassailable lead at the head of the fleet.
They just had to compete in Wednesday's medal race, which they finished fourth, to rubber stamp the win.
"It was amazing, we've sailed brilliantly for four years and this week has been one our best weeks so far," Outteridge told the BBC.
"It was great for it to happen at the Olympics and today was just about enjoying the race.
"... I think it's just great for the sport of sailing in Australia and hopefully that puts us in shape for the next Games. Now the campaign starts again."
Jensen added: "It's a great feeling and it's starting to sink in now."
The medal race was essentially a lap of honour for the Australians and New Zealand pair Blair Tuke and Peter Burling, who were assured of silver.
Only the bronze medal was still up for grabs, and Denmark's Allan Norregaard and Peter Lang took it after finishing the medal race third.
Outteridge boarded the Kiwis' boat after crossing the finishing line and bundled Tuke into the water.
The pair are training partners and great mates and Outteridge said it was special to be able to share the moment.
Outteridge and Jensen posed with their coach Emmett Lazich with an Australian flag before deliberately capsizing their boat.
The sailors had about 40 friends and family at Weymouth's Nothe peninsula.
Australia is hoping to win two more golds at the Olympic regatta.
World champion 470 dinghy sailors Malcolm Page and Mat Belcher take a four-point lead into their medal race on Thursday.
Only British pair Luke Patience and Stuart Bithell can snatch the gold from the Aussies.
The women's match racing crew, skippered by Olivia Price, continue their quarter-final clash with the Netherlands on Wednesday afternoon.
The match racing final is on Saturday.