Tauranga sailor Peter Burling and regular partner Blair Tuke have secured another victory in the 49er class after winning the 2015 South American 49er Championships in Buenos Aires, Argentina.

The triumph comes just days before the outcome of the 2015 ISAF Rolex World Sailor of the Year Awards are revealed, with former Tauranga Boys' College student Burling and Tuke among five finalists for the prestigious award.

Kiwi 49er sailors Peter Burling and Blair Tuke have won the 2015 South American 49er Championships in Buenos Aires, Argentina. Photo: NZL Sailing/Facebook

The winners are set to be announced at a gala dinner on Tuesday evening in China.

Lying in third position overall, with a six point gap to close heading into the final day of the four-day regatta, the possibility of Burling and Tuke continuing their phenomenal 20 consecutive regatta winning streak looked in danger.

However, three single digit races to open the day saw them start the medal race with the overall lead. Going on to place fifth in the medal race, the Kiwis wrapped up the regatta 22 points clear and make it 21 victories in a row.

'It is really nice to take the win,” says Burling.

'We'd just unpacked a new boat and spent some time setting it up, one day on the water and then it was pretty much straight into the first race.”

Burling explains that the Buenos Aires venue throws up some unique challenges.

'It is a different place to sail and a really challenging place to sail,” he says.

'The water is close to fresh water, and there's quite a lot of mud in it. It's really hard to read the puffs – but really rewarding when you get it right.”

'It was a really tricky event. We were sailing early in the day before the sea breeze came in. You can see on the score card that everyone got it wrong at some point, and we were just fortunate that we only got one wrong in the gold fleet series.”

'For us, this regatta was about building and learning with the main event still to come. We're really happy with how we've been going this week, but we have some more work to do.”

Racing for the 2015 49er and 49erFX World Championships get underway on Monday, November 16 and runs for six days.

'It is a really challenging place to get it right all the time,” says Burling, 'so it's going to be a tough venue to sail the World Championships.”

'We'll take tomorrow off and then we will be back on the water.”