Scores of sailors from across the country have made the long journey into the Outback to take part in the event in the middle of the Simpson Desert.
A monsoon in Queensland in February, during which six inches of rain fell in one day, with some towns recording their average annual rainfall in just 24 hours, has sent flows of water rushing into a series of inland lakes and rivers in remote South Australia.
The influx of water has been so large and sustained that, for the first time in more than 20 years, some of the desert lakes are now deep enough to sail on.