I’ve been pretty woman centered in my searches (seeing as how I am a girl and all), so to be fair I am adding the granddaddy of circumnavigators Joshua Slocum to this series. Click the link above to read the full Wikipedia article.
Joshua Slocum (February 20, 1844 – on or shortly after November 14, 1909) was the first man to sail single-handedly around the world. He was a Nova Scotian born, naturalised American seaman and adventurer, and a noted writer. In 1900 he wrote a book about his journey Sailing Alone Around the World, which became an international best-seller. He disappeared in November 1909 while aboard his boat, the Spray.