US Navy U.S. Navy Home Page U.S. Naval Observatory Navigator of the Navy Military Sealift Command Office of Naval Intelligence - Piracy Index of U.S. Navy Websites
US Coast Guard USCG Home Page USCG Navigation Center (NAVCEN) USCG District Local Notice to Mariners (LNM) USCG Light Lists USCG Navigation Rules Global Positioning System (GPS) Information Differential GPS Information LORAN Information
National Oceanographic and Atmospheric Administration (NOAA) National Weather Service - Marine Forecasts Office of Coast Survey Nautical Products US Coast Pilots NOAA Chart Updates
Miscellaneous The On-line Nautical Almanac Nautical Chart Correction Kits
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