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chart.\n","COORDINATES_TYPE":"Point","COORDINATES_JSON":"{\"type\":\"Point\",\"coordinates\":[-76.3444,38.01422]}","AID_UID":200100295988,"PRIMARY_LIGHT_LIST_NUMBER":16505,"COLOR":"RW","DESCRIPTION_TYPE":"LB","MSI_UID":52935,"MRN":"urn:mrn:iala:wwy:us:navIV:dis5:secvirexcecozon:secvirtersea:secvirsublanact:checha:potriv","DECIMAL_LONGITUDE":-76.34440000000001,"DECIMAL_LATITUDE":38.01422,"ESRI_OID":52935,"AID_NAME":"Potomac River Mid-Channel Lighted Whistle Buoy A","AID_TYPE":"FD"}},{"type":"Feature","id":52936,"geometry":{"type":"Point","coordinates":[-76.53095999999994,38.11505000000005]},"properties":{"MSI_GROUP":"ATON","TITLE":"Chesapeake Channel - Potomac River/ATON/ATON Changes","STATUS":"Approved","SUB_CATEGORY":"ATON Changes","TYPE":null,"WTRW_UID":100119317736,"WATERWAY_NAME":"Potomac River","ATU":5,"CREATE_DATE":1788431064000,"MODIFIED_DATE":1788431077000,"BEGIN_DATE":1788393600000,"END_DATE":1789689599000,"DESCRIPTION":"ATON/ATON Changes\n\nFrom: 2026-09-03 To: 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