Fundamentals of Kayak Navigation: Master the Traditional Skills and the Latest Technologies, Revised Fourth Edition [Paperback]
GPS Backup with a Mark 3 Sextant: All Instructions and Tables Included; For Any Ocean, on Any Date; No Background in Celestial Navigation Required. [Paperback]
Hawaii by Sextant: An In-Depth Exercise in Celestial Navigation Using Real Sextant Sights and Logbook Entries [Paperback]