- 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.
- National Geospatial Intelligence Agency Maritime Division
- Provides global maritime geospatial intelligence with list of publications, broadcast warnings, and product catalog.
- 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.
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