The old man can no longer see the osprey, but his life has brought him so close to the creatures of the sea that he understands their behavior instinctually. The sea has become a part of him.
http://thoreau.eserver.org/shore.html
Presence of Walden in Joshua Slocum's Sailing Alone Around the World. Ed. Patricia A. Carlson. Amsterdam: Rodopi, 1986.
The Sprey was the name of his sloop i think named after the Osprey I think.
My favorite name for a boat is the SS Prickly Heat. From a Laurel and hardy movie.