GPS Backup with a Mark 3 Sextant: All Instructions and Tables Included; For Any Ocean, on Any Date; No Background in Celestial Navigation Required.
by David Burch
GPS Backup with a Mark 3 Sextant is an instructional reference for ocean navigation without relying solely on GPS. It includes the necessary instructions and tables for using a Mark 3 sextant on any date and in any ocean, and is written for readers with no prior background in celestial navigation.
About This Book
GPS Backup with a Mark 3 Sextant presents an alternative approach to ocean navigation using a Mark 3 sextant.
The book includes instructions and tables designed for use on any date and in any ocean.
Written for readers without a background in celestial navigation, it focuses on making the process accessible and practical.
Its subject is the use of sextant-based navigation as a backup when GPS is unavailable or needs support.
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