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Waterway Harm BaseGeometry layer, supplied by CG-Zekiah. Modified MRNs, attributes, and added two data layers since initial merge/import that enhance the dataset with new MNS names and MRN hierarchy structure .
Added layer1 - Maritime boundaries depicted by US SLA BOEM 3 nm, Territorial Sea 12 nm and EEZ 200 nm, clipped by USCG Districts and Sectors and bounded to shoreline by Marine Regions coastline and WWH coastal features. US Submerged Lands Act (SLA) of 1953 boundary gathered from boem.gov site, SLA 3nm. Boundaries for Territorial Sea 12nm and EEZ 200mn, Maritime boundaries Limits from noaa.gov gis data service. Features bounded by Marine Regions/IHO v4 2020 initially, split by USCG sectors and adjoined/traced to WWH coastline features. Combined layers to be used for integration in WWH 1.0. Source metadata.
Added layer2-NAVAREAs, supplied by NGA.