Downloading AstroNav 1.1.7 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. The actual developer of the software is NavSoft. The most popular version of the software is 1.1. The default filename for the program's installer is AstroNav.exe. We recommend checking the downloaded files with any free antivirus. The software lies within Education Tools, more precisely Science Tools.
From the developer:
AstroNav is an electronic Nautical Almanac that includes a comprehensive catalog of stars.
By identifying any star from an altitude and azimuth it dramatically increases a sextant’s potential. Every visible body is a potential position line.
The speed with which sights can be plotted means that the quality of the horizon, can be determined by the result.
You may want to check out more software, such as StatPlus 2007, GenScn or Flashcard Tables, which might be related to AstroNav.