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Description: The Coast Guard is modernizing and rightsizing the buoy constellation, whose designs mostly predate Global Navigation Satellite Systems (GNSS), Electronic Navigation Charts (ENC), and Electronic Charting Systems (ECS), for long-term reliability and serviceability. This effort, which includes buoy discontinuation, will result in the most sustainable navigation risk reduction to support and complement modern mariners, today’s much larger ships, ECS system availability and requirements, and powerful smartphone navigation subscription apps affordably accessible to virtually all waterway users.The Proposed buoy constellation changes are intended to:- Support the navigational needs of the 21st century prudent mariner, vice those of the mid20th century (pre-GPS, AIS, e-charts, mobile device apps, improved radar, etc.), - Deliver effective, economical service – manage vessel transit risk to acceptable levels at acceptable cost, - Best maintain the most critical risk reducing buoys for the long-term, and- Provide resilience against AtoN discrepancies, GNSS disruptions/ECS failures.The proposed buoy discontinuation summary and detailed maps can also be viewed through a smartphone or tablet through the Coast Guard’s Local Notice to Mariners interactive tool on the NAVCEN web page: https://www.navcen.uscg.gov/sites/default/files/pdf/lnms/D1%20Coastal%20Buoy%20%20Modernization%20Initiative%20Proposal%20.pdf"(obtain QR code link and instructions). Track the status of the proposal on the Northeast Ocean Portal’s Coast Guard Proposed Actions page: https://www.northeastoceandata.org/coast-guard-proposed-actions.For more information and instructions for submitting comments, please visit: https://www.northeastoceandata.org/coast-guard-proposed-actions/.

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Copyright Text: U.S. Coast Guard; GIS data downloaded and published to web services by the Mid-Atlantic Ocean Data Portal for visualization purposes. Please refer to the original USCG web service data: https://services9.arcgis.com/Fr5UUTVwNRJlXAkf/ArcGIS/rest/services/D1BuoyDiscontinueCandidates_MSIProposedNotice/FeatureServer/0 .

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