About

Welcome to our blog, which accompanies the main site:
http://www.navigation-spreadsheets.com/

Here you will find examples showing how to use our Excel spreadsheets and T-Plotters to establish and track your position at sea independently of GPS using traditional astronomical observations.

You can also follow us on Facebook by joining the “Celestial navigation with Excel” group and by becoming a fan of the “Navigation Spreadsheets” page.

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