Description: Almanac and Sight Reduction Tables for Astro Navigation
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Welcome to the Backbearing Astronavigation website.
In this day of GPS, chartplotters and all manner of electronic aids, many sailors, amateur as well as professional, are using less and less the traditional methods of navigation. Take the name of this website for example; Backbearing.
Traditionally, a ships 'departure' would be a position determined from a back bearing taken of the last bit of land the navigator could see. Once out of sight of land he was then solely dependent on his own skill and the accuracy of his Sextant, Almanac and Sight Reduction Tables.