DIFFERENTIAL GPS DISCONTINUANCE
NDGPS service has been discontinued in accordance with the NDGPS Federal Register Notice USCG-2018-0133. With the rollout of the new GPS III satellites combined with the permanent termination of Selective Availability, DGPS is no longer deemed a necessary augmentation for close harbor approach.
2018 March - NDGPS Federal Register Notice USCG-2018-0133: The U.S. Coast Guard (USCG) announces the discontinuance of its remaining 38 maritime Differential Global Positioning System (DGPS) sites. - DHS (US Coast Guard).
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