The Complete On-Board Celestial Navigator, 2007-2011 Edition: Everything But the SextantEbookThe Complete On-Board Celestial Navigator, 2007-2011 Edition: Everything But the SextantbyGeorge C. BennettRating: 0 out of 5 stars0 ratingsSave The Complete On-Board Celestial Navigator, 2007-2011 Edition: Everything But the Sextant for later