Navigation

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• Science: Earth Sciences: Geomatics: GPS 
• Reference: Maps 

• CelestNav  - Showcases this full-featured calculator developed for celestial navigation.
• Institute of Navigation  - Dedicated to the advancement of the art and science of navigation features membership information, publications and meetings.
• The Navigation Foundation  - Non-profit corporation which preserves the art of celestial navigation. Includes group mission, profile, products and services.
• Navigator Software  - Designed for celestial navigation, presents software features and methodology.
• NavStation  - Software suite for recreational sailors, offers information related to tides and global positioning systems. Plus get purchasing details.
• NAVTEQ  - Specializes in providing digital map data. Includes market solutions, map updates, investor relations and company profile.
• Nordic Institute of Navigation  - Nordic Nations professional forum for navigation, position-fixing, precise time and frequency standards. With list of conferences, proceedings and links.
• U.S. Coast Guard Navigation Center  - United States Coast Guard's navigation center of excellence; operates navigation information system and nationwide differential global positioning systems areas.