Four men have been winched to safety after their boat flipped near Fraser Island off Queensland.
A helicopter rescue crew plucked four men from the hull of the vessel off the Fraser Island coast near Bundaberg on Saturday afternoon.
RACQ LifeFlight said the catamaran's occupants activated an EPIRB emergency beacon after it flipped. It is believed the tourists were trying to turn the 5.2-metre vessel around.
The helicopter located the vessel west of Wathumba Creek before each of the four men were winched individually to the helicopter.
Aircrew officer Brent Maiden, who operated the winch, said the men were wet and cold after being stranded for about 90 minutes.
"They had set off flares to try to alert other boats that they needed help, but it seems nobody saw them, perhaps due to significant smoke haze around the island," he said.
The four men were flown to the Hervey Bay hospital where one was treated for a minor leg injury.
They were able to found quickly because they "did all the right things".
"They were wearing life jackets, they had flares, they set off a registered beacon," Mr Maiden said.
"One of them had the beacon tied to himself. Thanks to all those safety measures, we were able to find them quickly and rescue them."