{"type":"FeatureCollection","features":[{"type":"Feature","id":52588,"geometry":{"type":"Polygon","coordinates":[[[-90.25676999999996,38.53597000000008],[-90.26024999999998,38.53075000000007],[-90.25867999999997,38.52998000000008],[-90.25511999999998,38.53540000000004],[-90.25676999999996,38.53597000000008]]]},"properties":{"ESRI_OID":52588,"MSI_UID":52588,"ATU":2,"TITLE":"Lower Mississippi River - Upper Mississippi River/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116381438,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:secneworlexcecozon:secneworltersea:secneworlsublanact:soupas:heaofpastoneworl:neworlhar:neworltobatrou:lowmisriv:uppmisriv","WATERWAY_NAME":"Upper Mississippi River","CREATE_DATE":1788179930000,"MODIFIED_DATE":1788179996000,"BEGIN_DATE":1788134400000,"END_DATE":1790812799000,"DESCRIPTION":"Continuing until further notice, the Dredge POTTER will be conducting dredging operations in the vicinity of Mile 172.0.  The dredge and attendant plant will include tender boats, small boats, barges and pipeline.  Work will be conducted 24-hours a day, 7-days a week.  Dredged material will be pumped through a pontoon pipeline or self-floating pipeline, which may cross the channel and will be placed outside of the navigation channel.  Mariners should be on the lookout for tender boats, barges, small survey boats, and pipeline when transiting the dredge project area.  The Dredge POTTER will monitor VHF-FM Channel 13 or 16, and requests 30-minutes advance notice of passage.  Vessels are urged to transit the area at their slowest safe speed and proceed with caution after passing arrangements have been made. 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The breakwaters will be installed via shallow draft barge and will be identical to the existing structures located on the southern half of the island.  On-scene vessels will include, but are not limited to, pushboats, barges, material handlers, and transport vessels.  Mariners are requested to transit the area at no-wake speed.  VHF-FM Channels: 12 and 16, POC: (251) 751-4127 and 251-895-6378","COORDINATES_JSON":"{\"type\":\"Polygon\",\"coordinates\":[[[-88.22271,30.3257],[-88.22486,30.3255],[-88.22629,30.32469],[-88.22735,30.32348],[-88.22788,30.32224],[-88.22752,30.3208],[-88.22651,30.32137],[-88.22636,30.32213],[-88.22612,30.32306],[-88.22541,30.32391],[-88.22423,30.32433],[-88.22318,30.32446],[-88.22181,30.32443],[-88.22087,30.32411],[-88.22018,30.32359],[-88.21919,30.3245],[-88.22112,30.32541],[-88.22271,30.3257]]]}","COORDINATES_TYPE":"Polygon","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":52622,"geometry":{"type":"Polygon","coordinates":[[[-87.58742999999998,37.97584000000006],[-87.58765999999997,37.97548000000006],[-87.58535999999998,37.97448000000003],[-87.58133999999995,37.973020000000076],[-87.58121999999997,37.97333000000003],[-87.58166999999997,37.97344000000004],[-87.58299999999997,37.97394000000003],[-87.58393999999998,37.97438000000005],[-87.58478999999994,37.97461000000004],[-87.58547999999996,37.974860000000035],[-87.58552999999995,37.975040000000035],[-87.58543999999995,37.97523000000007],[-87.58742999999998,37.97584000000006]]]},"properties":{"ESRI_OID":52622,"MSI_UID":52622,"ATU":2,"TITLE":"Lower Mississippi River - Ohio River/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116381306,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:secneworlexcecozon:secneworltersea:secneworlsublanact:soupas:heaofpastoneworl:neworlhar:neworltobatrou:lowmisriv:ohiriv","WATERWAY_NAME":"Ohio River","CREATE_DATE":1788185996000,"MODIFIED_DATE":1788186213000,"BEGIN_DATE":1788134400000,"END_DATE":1789257599000,"DESCRIPTION":"Commencing September 8, 2026, and continuing until September 11, 2026, Mulzer Crushed stone Inc., will be conducting dredging operations immediately upstream of Pigeon Creek, in the vicinity of Mile 792.7.  The contractor’s floating plant will consist of a crane barge and a material barge.  Work will be conducted from 7:00 a.m. until 4:00 p.m., daily.  The floating plant will monitor VHF-FM Channel 74.  Mariners are urged to transit the area at their slowest safe speed to minimize their wake and proceed with caution. 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The Derrick Barge (DB) Paula Lee and Crane Barge (CB) Harry S along with 4 bottom dumps scows will perform dig and dump dredging in 14 Reaches: \n\n1. Shoal 1 – Hog Island Reach\n2. Shoal 2 – Lower Town Creek Reach\n3. Shoal 2A – Customs House Reach\n4. Shoal 4 – Town Creek Reach\n5. Shoal 4A – Town Creek Turning Basin\n6. Shoal 5 – Meyers Bend\n7. Shoal 5A – Meyers Bend West\n8. Shoal 6 – Drum Island Reach\n9. Shoal 7 – Lower Wando Rech\n10. Shoal 8 – Wando Turning Basin\n11. Shoal 9 – Upper Wando Turning Basin\n12. Shoal 11 – Daniel Island Reach\n13. Shoal 12 – HLT Turning Basin\n14. Shipyard River\n\nDredging will begin in Shoals 8 and 9, Upper Wando and Wando Turning Basins with the DB Paula Lee. The CB Harry S is anticipated to arrive December 1, 2026. For any questions or concerns regarding the dredging operations, please contact the project manager at (415) 717-7214, or the USCG Sector Charleston Command Center at (833) 453-1261. 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Work will be conducted from 7:00 a.m. until 7:00 p.m., Monday through Friday.  The M/V ANGELA K., will monitor VHF-FM Channel 12 or 13 and requests 30-minutes advance notice of passage.  Mariners are urged to transit the area at their slowest safe speed and proceed with caution after passing arrangements have been made.","COORDINATES_JSON":"{\"type\":\"Polygon\",\"coordinates\":[[[-91.3454,43.91127],[-91.34751,43.91097],[-91.34662,43.90927],[-91.34544,43.90615],[-91.34396,43.90622],[-91.34492,43.9094],[-91.3454,43.91127]]]}","COORDINATES_TYPE":"Polygon","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":52629,"geometry":{"type":"Polygon","coordinates":[[[-71.33860999999996,41.72598000000005],[-71.36332999999996,41.71778000000006],[-71.36813999999998,41.714710000000025],[-71.36847999999998,41.691130000000044],[-71.37637999999998,41.682150000000036],[-71.37877999999995,41.66933000000006],[-71.39113999999995,41.67318000000006],[-71.41070999999994,41.68574000000007],[-71.42890999999997,41.67241000000007],[-71.40967999999998,41.65163000000007],[-71.40486999999996,41.627000000000066],[-71.40383999999995,41.60339000000005],[-71.40109999999999,41.59260000000006],[-71.42958999999996,41.585930000000076],[-71.43885999999998,41.574110000000076],[-71.44332999999995,41.56744000000003],[-71.41619999999995,41.52941000000004],[-71.41482999999994,41.51219000000003],[-71.42100999999997,41.49959000000007],[-71.41963999999996,41.48261000000008],[-71.41928999999993,41.47001000000006],[-71.40040999999997,41.45998000000003],[-71.39285999999998,41.46692000000007],[-71.39868999999999,41.489040000000045],[-71.39800999999994,41.492650000000026],[-71.38632999999999,41.49290000000008],[-71.37671999999998,41.50782000000004],[-71.39147999999994,41.51630000000006],[-71.38564999999994,41.537630000000036],[-71.38735999999994,41.554080000000056],[-71.37225999999998,41.569750000000056],[-71.32899999999995,41.574880000000064],[-71.33860999999996,41.58336000000003],[-71.34032999999994,41.59851000000003],[-71.32796999999994,41.623410000000035],[-71.33242999999999,41.630850000000066],[-71.34993999999995,41.635980000000075],[-71.35440999999997,41.649320000000046],[-71.34856999999994,41.66984000000008],[-71.33860999999996,41.72598000000005]]]},"properties":{"ESRI_OID":52629,"MSI_UID":52629,"ATU":1,"TITLE":"Sector Southeastern New England, Submerged Lands Act (SLA) - West Passage/General/Marine Construction (Excluding Bridges)/Survey Operations","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Survey Operations","WTRW_UID":100116382337,"MRN":"urn:mrn:iala:wwy:us:navIV:dis1:secsounewengexcecozon:secsounewengtersea:secsounewengsublanact:wespas","WATERWAY_NAME":"West Passage","CREATE_DATE":1788188742000,"MODIFIED_DATE":1788188750000,"BEGIN_DATE":1788134400000,"END_DATE":1790985599000,"DESCRIPTION":"General/Marine Construction (Excluding Bridges)/Survey Operations\n\nFrom: 2026-08-31 To: 2026-10-02\n\nFrom August 31 to October 1, 2026, sunrise to sunset, manned and unmanned wing-in-ground effect vehicles will conduct surface and ground-effect testing in the West Passage of Narragansett Bay. The vehicles will launch from the Port of Davisville and may operate at speeds up to 60 knots. Mariners should transit the area with extreme caution. REGENT support vessel SEABEE will monitor VHF Channel 16 for concerned traffic. Additional testing dates will be announced.\n\n","COORDINATES_JSON":"{\"type\":\"Polygon\",\"coordinates\":[[[-71.33861,41.72598],[-71.36333,41.71778],[-71.36814,41.71471],[-71.36848,41.69113],[-71.37638,41.68215],[-71.37878,41.66933],[-71.39114,41.67318],[-71.41071,41.68574],[-71.42891,41.67241],[-71.40968,41.65163],[-71.40487,41.627],[-71.40384,41.60339],[-71.4011,41.5926],[-71.42959,41.58593],[-71.43886,41.57411],[-71.44333,41.56744],[-71.4162,41.52941],[-71.41483,41.51219],[-71.42101,41.49959],[-71.41964,41.48261],[-71.41929,41.47001],[-71.40041,41.45998],[-71.39286,41.46692],[-71.39869,41.48904],[-71.39801,41.49265],[-71.38633,41.4929],[-71.37672,41.50782],[-71.39148,41.5163],[-71.38565,41.53763],[-71.38736,41.55408],[-71.37226,41.56975],[-71.329,41.57488],[-71.33861,41.58336],[-71.34033,41.59851],[-71.32797,41.62341],[-71.33243,41.63085],[-71.34994,41.63598],[-71.35441,41.64932],[-71.34857,41.66984],[-71.33861,41.72598]]]}","COORDINATES_TYPE":"Polygon","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":52675,"geometry":{"type":"Polygon","coordinates":[[[-79.06408999999996,33.66608000000008],[-79.06634999999994,33.66492000000005],[-79.06607999999994,33.66474000000005],[-79.06468999999998,33.66556000000003],[-79.06433999999996,33.665590000000066],[-79.06381999999996,33.66582000000005],[-79.06408999999996,33.66608000000008]]]},"properties":{"ESRI_OID":52675,"MSI_UID":52675,"ATU":7,"TITLE":"Winyah Bay Channel - Little River Winyah Bay/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116384275,"MRN":"urn:mrn:iala:wwy:us:navIV:dis7:secchaexcecozon:secchatersea:secchasublanact:winbaycha:litrivwinbay","WATERWAY_NAME":"Little River Winyah Bay","CREATE_DATE":1788219515000,"MODIFIED_DATE":1788220132000,"BEGIN_DATE":1788134400000,"END_DATE":1789430399000,"DESCRIPTION":"General/Marine Construction (Excluding Bridges)/Dredging\n\nBeginning on or about September 1, 2026 and until approximately September 7, 2026, Coastal Dredging LLC will begin mechanical maintenance dredging activities in the vicinity of 380 Chamberlin Rd., located at 33-39-54.684N, 79-03-53.892W, adjacent to the AIWW on the Wacamaw River in Myrtle Beach, South Carolina and will be transporting sediment via containment barge approximately 1,550 feet to a landing located on the Wacamaw River. Hours of operation will be approximately 7 a.m. to 7 p.m., Monday to Sunday.\nDuring this period all vessels operating in the vicinity of this area need to keep a sharp lookout for containment barges transporting material and operate their vessels at a safe speed. All vessels in this vicinity should monitor VHF-FM channel 16 or channel 66 while approaching and passing dredge activity. If you need additional information you may call Billy Jordan captbillyjordan@gmail.com / (843)670-1209 or Jonathan Yopp coastaldredgingllc@yahoo.com / (910) 389-7604. Thank you for you cooperation.","COORDINATES_JSON":"{\"type\":\"Polygon\",\"coordinates\":[[[-79.06409,33.66608],[-79.06635,33.66492],[-79.06608,33.66474],[-79.06469,33.66556],[-79.06434,33.66559],[-79.06382,33.66582],[-79.06409,33.66608]]]}","COORDINATES_TYPE":"Polygon","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}}]}