Celestial Navigation Forum: Discussion forum and live chat.
Celestial Navigation Net: Annotated hub site of resources relating to navigating by the stars, including theory, practice, history, instruments, and classroom links.
German Institute of Navigation (DGON): About the organization.
How Columbus and Apollo Astronauts Navigated: Comparative analysis of techniques used then and now including dead reckoning and celestial navigation. Discussion of the "longitude problem."
International Association of Institutes of Navigation: About the organization. Online newsletter. Membership information. Definitions of navigation terms. International directory of organizations.
Lunar Rover Demonstration Navigation Group: About the Carnegie Mellon researchers creating a prototype for a new lunar rover that can navigate rugged terrain and the navigation system they're using.
Navigation and Related Subjects: Covers celestial navigation theory, sextant errors and corrections, rhumb line caluclations and coastal navigation and conning.
Near-Earth Navigation and Geodesy: Describes the activities and research of the Navigation Research Office at the European Space Operations Center.
Nordic Institute of Navigation: About the organization. Membership information. Meeting programs. Discussion forum.
Royal Institute of Navigation: About the London based organization. Membership information. Online newsletter and briefings. Mailing list. Search the organizations library or journals. Competitions and events schedule.
The Institute of Navigation: Meeting programs with abstracts. Award winners and nomination forms. Membership information. Online version of the quarterly newsletter. Index of the organization's annual journal.
The Navigation Foundation: A non-profit corporation dedicated to the preservation of the art of celestial navigation. Mission, membership benefits, contact information.
US Coast Guard Navigation Center: News, updates and advisories. Links to local US Coast Guards sites. Downloadable publications.