@ccohanlon Ah, one of my heroes. Absolutely self-taught. He'd never sailed before when he read some books on the subject and then built a boat and sailed it around the world.
He also did it just to go and see the world, rather than for any silly competition or bragging rights. And he brought a camera!
When he finally got married at age 72: "I have never been married, but now that I was 72 years old, I considered myself sufficiently ripe to give it a try."
@yngmar You might enjoy this: http://www.stexboat.com/books/circumnav/ci_table.htm