Transcript for Man spends 12 hours sitting on capsized boat off Australian coast

And we're back now with the close call for an American in rough and shark-infested waters off of Australia. Stranded on the hull of his capsized catamaran. ABC's linsey Davis picks up the story. Reporter: This 29-year-old is thankful just to be alive this Thanksgiving. Levi verwoest spent 12 hours overnight sitting on his boat after it capsized off the coast of Australia. I noticed the boat slowing down and went out on deck and there was a hatch cover miss, allowing water to flow in and by the time I was able to get out of the cabin and even attempt to do anything, the hull was already full of water. The boat was went -- capsized. Under a minute. Reporter: Verwoest is from Hawaii, but he spent the last three years exploring the great barrier reef in his catamaran. The sailor tried to right his boat but couldn't. After a long, cold night in shark-infested waters, verweost activated his personal locator beacon. If I didn't have that, I'd still be drifting out there, hoping someone sailed past. Reporter: Rescuers were able to reach him by helicopter just 12 minutes later. Verwoest says within one hour of calling for help, he was back on shore where he was fully examined by a medical team. He plans to continue sailing as soon as possible. Whit? Linsey, thank you. When we come back, police

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