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The top documents tagged [ndgps sites]
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ndgps sites
U.S. COAST GUARD NAVIGATION CENTER. NAVCEN Missions Meet SOLAS and Titles 14 & 33 CFR Operate radionavigation services per Federal Radionavigation Plan.
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U.S. COAST GUARD NAVIGATION CENTER
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Nationwide Differential GPS (NDGPS) Water Vapor Observations During Hurricane Georges
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