Astro Navigation
Shareware that calculates position by means of stars observations, designed by a seaman for seamen. Includes an introduction to celestial navigation theory.
CelestNav
Palm Pilot shareware for finding your geographic position with a sextant.
Geo Magnetic Info
A Palm Pilot application to compute the magnetic declination, inclination, and magnitude for any location on Earth.
Navigator Light Software
Celestial and chart navigation software. Star finder. Nautical Almanac.