--WDS comment: I'm dubious. Does this guy really navigate using chronometer, sextant, and spherical trigonometry? I doubt anybody has done that for decades. I have no idea about the navigation qualities of Mike Edmunds, but I can confirm that in Austria and Germany still a course in celestial navigation is mandatory to get certain sailing certificates. As far as I know from two colleagues that passed this exam a few years ago, they had also to work with a sextant. One colleague is a very experienced sailor and he keeps instructing me that on sea reliability is much more important than comfort. A sextant is compatible with salt water, works perfect without electricity, cannot be destroyed by a lightning strike, ... http://en.wikipedia.org/wiki/Celestial_navigation mentions that the U.S. Air Force and U.S. Navy continued instructing military aviators on the use of celestial navigation until 1997. A place which offers courses in celestial navigation is http://www.celestial-navigation.sailingschool.com/ Christoph