Product Description
The ultimate manual for bluewater navigation, complete with all the forms and data, for when your electronics fail.
From the Inside Flap
"Celestial Navigation when your GPS fails!" is about finding position at sea from the Sun, Moon, planets or stars. If you have a sextant and the time, in both senses, this book contains all you need to find your position.
This book is for real and aspiring blue water sailors, those who leave the sight of land and rely on various electronic devices for navigation. When satellite navigation fails because of seawater in the electronics or just plain battery failure then being lost at sea is a life-threatening situation, especially when night falls. A sailor, undertaking celestial navigation, needs a sextant and a watch, but also knowledge of how to do celestial navigation and how to use the appropriate tables and make the calculations.
This book contains everything you need apart from the sextant and a watch. A calculator is handy but not essential. There is complete instruction on how to use a sextant, on making astronomical observations and on how to do the calculations with or without the forms. There are all tables and the forms needed to make the calculations, here and on the associated website. You do not need any further almanacs or tables for the next ten years!