Captain Joshua Slocum was the first person to sail alone around the world and "San Diego Boat Tours" are members of the Joshua Slocum Society International. We quote from their website;

Nova Scotia born, with family roots in New England, Captain Slocum commanded some of the finest tall ships that ever sailed the seas. On April 24, 1895, at the age of 51, he departed Boston in his tiny sloop Spray and sailed around the world single-handed, a passage of 46,000 miles, returning to Newport, Rhode Island on June 27, 1898. This historic achievement made him the patron saint of small-boat voyagers, navigators and adventurers all over the world.

Solo circumnavigation in any age is a great accomplishment, but being the first to achieve this and to complete the venture in the late 1800's is truely very inspiring.