Josh Ku completes foil crossing from Uluwatu to G-Land At some point in the 56-mile adventure, the Australian 34-year-old lost contact with his support boat and had to trust his instinct and rely on one liter of water to get safe to terra firma.

Ku took four hours and 30 minutes to complete the 57-mile (92-kilometer) adventure between the two iconic surf breaks. The problem was that, at some point, he lost his support boat.

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