US Coast Guard Navigation Center

News, updates and advisories. Links to local US Coast Guards sites. Downloadable publications.
http://www.navcen.uscg.gov/

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.
http://www-2.cs.cmu.edu/afs/cs/project/lri-3/www/lrd/nav-home.html

Celestial Navigation Net

Annotated hub site of resources relating to navigating by the stars, including theory, practice, history, instruments, and classroom links.
http://www.celestialnavigation.net/

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.
http://www.rin.org.uk/

Nordic Institute of Navigation

About the organization. Membership information. Meeting programs. Discussion forum.
http://www.nornav.org/

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.
http://www.ion.org/

Near-Earth Navigation and Geodesy

Describes the activities and research of the Navigation Research Office at the European Space Operations Center.
http://nng.esoc.esa.de/

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."
http://vesuvius.jsc.nasa.gov/er/seh/navigate.htm

International Association of Institutes of Navigation

About the organization. Online newsletter. Membership information. Definitions of navigation terms. International directory of organizations.
http://www.rin.org.uk/iain/frame1.htm

A Short Guide to Celestial Navigation

Downloadable electronic book. Also several shareware programs.
http://home.t-online.de/home/h.umland/

German Institute of Navigation (DGON)

About the organization.
http://www.dgon.de/content/englisch/englisch.htm

Celestial Navigation Forum

Discussion forum and live chat.
http://jollyroger.com/zz/yna4d/CelestialNavigationhall/shakespeare1.html

Visual Global Positioning System

About a map-based three dimenesional air or two dimensional marine or land based navigation system.
http://members.ispwest.com/vgps

Navigation and Related Subjects

Covers celestial navigation theory, sextant errors and corrections, rhumb line caluclations and coastal navigation and conning.
http://jacq.istos.com.au/sundry/navig.html