Dove
an obvious Choice but i did not see it listed, If you haven't heard of it it an account of a 16 year old;s 7 year circumnavigation. incredible. Did i mention a single hand circumnavigation.
There is a part In this book where he is becalmed off the coast of Africa where he cannot tell the difference between the Ocean and the stars, at night he rocks the boat just so he can see that he has not floated away into space. Amazing!
Enjoy
I've read that book; definitely worth picking up a copy.