Location: The Bermuda Triangle
Joshua Slocum, the first man to sail solo around the world in 1895, was considered one of the best sailors of his time. His boat, The Spray, was an old fishing boat that he had rebuilt.
He never should have been lost at sea, but it appears that's exactly what happened. In 1909, Slocum left the East Coast of the United States and headed to Grand Cayman for the winter. Slocum was never heard from or seen again.
He wasn't declared legally dead until 1924. No one knows for sure that Slocum disappeared within Triangle waters, but Bermuda buffs claim Slocum's story as part of the legacy of the Devil's Triangle.