Celestial Navigation in the GPS Age
John Karl is a physicist, artist, pilot, writer, and a sailor. He learned celestial navigation 50 years ago and has been sailing for 60 years. He s taught celestial navigation workshops at the University of Wisconsin and aboard the 3-masted S/V Denis Sullivan. He s conducted marine research in the Great Lakes on the R/V Salmo and in the Gulf of California aboard the R/V Melville. Karl has sailed the Pacific Ocean, East Coast, Great Lakes, Florida Keys, and the Bahamas.