Celestial navigation - passage planning.
- Easy to use system for sight reduction of sextant sights to position fixes without tables and almanacs traditionally used. Co-ordinates are computed directly without plotting
- Integral almanac for sun, moon, stars, and planets. Graphic plot of position lines. Running fixes. Star and planet finder and identifier
- Passage planning in Great Circle and Rhumb line up to 99 legs. 234 named waypoints with index. NMEA 0183 interface software
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