{"type":"FeatureCollection","features":[{"type":"Feature","id":5519,"geometry":{"type":"LineString","coordinates":[[-91.24790999999999,29.540020000000027],[-91.24151999999998,29.53326000000004],[-91.23460999999998,29.53102000000007],[-91.22673999999995,29.53376000000003],[-91.20670999999999,29.55935000000005],[-91.19654999999995,29.59224000000006],[-91.19154999999995,29.596470000000068],[-91.18300999999997,29.598460000000046],[-91.16140999999999,29.59241000000003],[-91.15472999999997,29.597380000000044],[-91.15282999999994,29.60468000000003],[-91.13842999999997,29.60994000000005],[-91.12268999999998,29.607660000000067],[-91.11891999999995,29.609360000000038],[-91.11763999999994,29.61683000000005],[-91.10261999999994,29.618730000000028],[-91.09579999999994,29.62367000000006],[-91.08945999999997,29.62209000000007],[-91.08205999999996,29.626320000000078],[-91.08458999999999,29.63337000000007],[-91.09307999999999,29.63987000000003],[-91.10614999999996,29.642190000000028],[-91.09965999999997,29.658150000000035],[-91.09960999999998,29.661790000000053]]},"properties":{"ESRI_OID":5519,"MSI_UID":5519,"ATU":8,"TITLE":"New Orleans Port Arthur/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116384625,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:secneworlexcecozon:sechouexcecozon:secneworltersea:sechoutersea:secneworlsublanact:sechousublanact:neworl","WATERWAY_NAME":"New Orleans Port Arthur","CREATE_DATE":1732032119000,"MODIFIED_DATE":1774964947000,"BEGIN_DATE":1733702400000,"END_DATE":1780358399000,"DESCRIPTION":"Atchafalaya River - Avoca Island Cutoff - Bayou Chene - Bayou Boeuf - Bayou Black - Dredge Operation --- From: 2024-12-09 To: 2026-05-31 --- The Dredge MIKE HOOKS and attendant plant will conduct dredging and disposal operations in Bayous Chene, Boeuf, and Black.  Work will take place 24-hours a day, 7-days a week.  Floating and submerged line will be in the project area connecting and leading to multiple disposal sites.  Numerous work and support vessels associated with this dredging operation will be in the project area.  All vessels requiring the majority of the channel to navigate safely should contact the dredge 1-hour in advance.  VHF-FM Channels: 13 and 16,  POC: (337) 485-5121 or (337) 909-9041","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-91.24791,29.54002],[-91.24152,29.53326],[-91.23461,29.53102],[-91.22674,29.53376],[-91.20671,29.55935],[-91.19655,29.59224],[-91.19155,29.59647],[-91.18301,29.59846],[-91.16141,29.59241],[-91.15473,29.59738],[-91.15283,29.60468],[-91.13843,29.60994],[-91.12269,29.60766],[-91.11892,29.60936],[-91.11764,29.61683],[-91.10262,29.61873],[-91.0958,29.62367],[-91.08946,29.62209],[-91.08206,29.62632],[-91.08459,29.63337],[-91.09308,29.63987],[-91.10615,29.64219],[-91.09966,29.65815],[-91.09961,29.66179]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":5531,"geometry":{"type":"LineString","coordinates":[[-91.08436999999998,29.62495000000007],[-91.07787999999994,29.62719000000004],[-91.07110999999998,29.626070000000027],[-91.06161999999995,29.621970000000033],[-91.05909999999994,29.620390000000043],[-91.05308999999994,29.621590000000026],[-91.05494999999996,29.630220000000065],[-91.05370999999997,29.634190000000046],[-91.04058999999995,29.644100000000037],[-91.03362999999996,29.64775000000003],[-91.02986999999996,29.66113000000007]]},"properties":{"ESRI_OID":5531,"MSI_UID":5531,"ATU":8,"TITLE":"Atchafalaya River - Avoca Island Cutoff Channel/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116384931,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:secneworlexcecozon:secneworltersea:secneworlsublanact:atccha:atcriv:avoislcutcha","WATERWAY_NAME":"Avoca Island Cutoff Channel","CREATE_DATE":1732033779000,"MODIFIED_DATE":1774963572000,"BEGIN_DATE":1733702400000,"END_DATE":1780358399000,"DESCRIPTION":"Bayou Chene - Bayou Boeuf - Bayou Black - Dredge Operation --- From: 2024-12-09 To: 2026-05-31 --- The Dredge MIKE HOOKS and attendant plant will conduct dredging and disposal operations in the area, 24-hours a day, 7-days a week.  Floating and submerged line will be in the project area connecting and leading to multiple disposal sites.  All vessels requiring the majority of the channel to navigate safely, should contact the dredge 1-hour in advance.  VHF-FM Channels: 13 and 16,  POC: (337) 485-5121 or (337) 909-9041","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-91.08437,29.62495],[-91.07788,29.62719],[-91.07111,29.62607],[-91.06162,29.62197],[-91.0591,29.62039],[-91.05309,29.62159],[-91.05495,29.63022],[-91.05371,29.63419],[-91.04059,29.6441],[-91.03363,29.64775],[-91.02987,29.66113]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":5816,"geometry":{"type":"LineString","coordinates":[[-97.25884999999994,26.015610000000038],[-97.32868999999994,25.97643000000005],[-97.38681999999994,25.95604000000003]]},"properties":{"ESRI_OID":5816,"MSI_UID":5816,"ATU":8,"TITLE":"Laguna Madre Channel - Brownsville Channel/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116385092,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:seccorchrexcecozon:seccorchrtersea:seccorchrsublanact:brasanpas:lagmadcha:brocha","WATERWAY_NAME":"Brownsville Channel","CREATE_DATE":1732304281000,"MODIFIED_DATE":1754070395000,"BEGIN_DATE":1732665600000,"END_DATE":1778025599000,"DESCRIPTION":"Brownsville Ship Channel - Brazos Island Harbor Channel - Dredge Operation --- From: 2024-11-27 To: 2026-05-04 --- The Dredge GENERAL MACARTHUR is conducting dredging operations in the Brownsville Ship Channel.  The dredge will work 24-hours a day, 7-days a week.  On-scene vessels and equipment will include barges, tugboats, survey boats, skiffs, and floating and submerged pipeline.  Vessels should coordinate passing arrangements with the dredge 1-hour in advance.  Mariners are urged to transit the area at their slowest safe speed and proceed with caution.  VHF-FM Channels: 13 and 72,  POC: USACE (956) 638-2026","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-97.25885,26.01561],[-97.32869,25.97643],[-97.38682,25.95604]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":8491,"geometry":{"type":"LineString","coordinates":[[-91.54911999999996,29.184960000000046],[-91.43788999999998,29.31051000000008]]},"properties":{"ESRI_OID":8491,"MSI_UID":8491,"ATU":8,"TITLE":"Sector New Orleans, Submerged Land Act (SLA) - Atchafalaya Channel/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116384918,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:secneworlexcecozon:secneworltersea:secneworlsublanact:atccha","WATERWAY_NAME":"Atchafalaya Channel","CREATE_DATE":1736263768000,"MODIFIED_DATE":1773940426000,"BEGIN_DATE":1736208000000,"END_DATE":1798847999000,"DESCRIPTION":"Atchafalaya Bar Channel - Dredge Operation --- From: 2025-01-07 To: 2026-12-31 --- The Agitation Dredge ARULAQ will be dredging in the Atchafalaya Bar Channel, between Miles 167.0 and 156.0, 24-hours a day, 7-days a week.  Mariners should coordinate passing arrangements with the M/V JOHN E. GRAHAM and transit the area at their slowest safe speed to minimize wake.  VHF-FM Channels: 13 and 16,  POC: USACE (504) 862-2360, (504) 862-2153 and (504) 862-2630","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-91.54912,29.18496],[-91.43789,29.31051]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":30942,"geometry":{"type":"LineString","coordinates":[[-93.33252999999996,30.007510000000025],[-93.32698999999997,30.060290000000066],[-93.32546999999994,30.08439000000004],[-93.32497999999998,30.092250000000035],[-93.32879999999994,30.10405000000003],[-93.33298999999994,30.10958000000005],[-93.33470999999997,30.11247000000003],[-93.33403999999996,30.117830000000026],[-93.33012999999994,30.131520000000023],[-93.33165999999994,30.147190000000023],[-93.33260999999999,30.15247000000005],[-93.33108999999996,30.15527000000003],[-93.32059999999996,30.16071000000005],[-93.31906999999995,30.164010000000076],[-93.31801999999999,30.174650000000042],[-93.31658999999996,30.178030000000035],[-93.31372999999996,30.180420000000026],[-93.29741999999999,30.190810000000056],[-93.28114999999997,30.201370000000054],[-93.27437999999995,30.205490000000054],[-93.27256999999997,30.206390000000056],[-93.26817999999997,30.206230000000062],[-93.26359999999994,30.207050000000038],[-93.26016999999996,30.209940000000074],[-93.25879999999995,30.212100000000078],[-93.25888999999995,30.21482000000003],[-93.26017999999999,30.218030000000056],[-93.25950999999998,30.21915000000007],[-93.25788999999997,30.21968000000004],[-93.25462999999996,30.219110000000057]]},"properties":{"ESRI_OID":30942,"MSI_UID":30942,"ATU":8,"TITLE":"General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116856986,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:sechouexcecozon:sechoutersea:sechousublanact:calriv","WATERWAY_NAME":"Calcasieu River","CREATE_DATE":1761324458000,"MODIFIED_DATE":1761325145000,"BEGIN_DATE":1761264000000,"END_DATE":1782950399000,"DESCRIPTION":"Calcasieu River - Dredge Operation --- From: 2025-11-05 To: 2026-06-30 --- The Dredge VANETA MARIE will be working in the Calcasieu River between approximate Miles 17.0 and 34.0.  The dredge will work 24-hours a day, 7-days a week.  Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made.  VHF-FM Channel: 13 or 16,  POC: (504) 862-2971 and (337) 529-7510","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-93.33253,30.00751],[-93.32699,30.06029],[-93.32547,30.08439],[-93.32498,30.09225],[-93.3288,30.10405],[-93.33299,30.10958],[-93.33471,30.11247],[-93.33404,30.11783],[-93.33013,30.13152],[-93.33166,30.14719],[-93.33261,30.15247],[-93.33109,30.15527],[-93.3206,30.16071],[-93.31907,30.16401],[-93.31802,30.17465],[-93.31659,30.17803],[-93.31373,30.18042],[-93.29742,30.19081],[-93.28115,30.20137],[-93.27438,30.20549],[-93.27257,30.20639],[-93.26818,30.20623],[-93.2636,30.20705],[-93.26017,30.20994],[-93.2588,30.2121],[-93.25889,30.21482],[-93.26018,30.21803],[-93.25951,30.21915],[-93.25789,30.21968],[-93.25463,30.21911]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":31471,"geometry":{"type":"LineString","coordinates":[[-73.55370999999997,41.00834000000003],[-73.22583999999995,41.00642000000005]]},"properties":{"ESRI_OID":31471,"MSI_UID":31471,"ATU":1,"TITLE":"General/Marine Construction (Excluding Bridges)/Facilities, Barriers, Manmade Reefs, Riprap, Jetties/Dikes","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Facilities, Barriers, Manmade Reefs, Riprap, Jetties/Dikes","WTRW_UID":100116381546,"MRN":"urn:mrn:iala:wwy:us:navIV:dis1:seclonislsouexcecozon:seclonislsoutersea:seclonislsousublanact:bloislsouandgarbay:lonislsoueaspar:lonislsouwespar","WATERWAY_NAME":"Long Island Sound Western Part","CREATE_DATE":1762200350000,"MODIFIED_DATE":1762200357000,"BEGIN_DATE":1762128000000,"END_DATE":1781654399000,"DESCRIPTION":"General/Marine Construction (Excluding Bridges)/Facilities, Barriers, Manmade Reefs, Riprap, Jetties/Dikes\n\nFrom: 2025-11-10 To: 2026-06-16\n\n\nSoundWaters, Inc. will be deploying anchors, grow lines and regulatory buoys for growing sugar kelp, Long Island Sound, Stamford, CT, approximately 3200' SW of Stamford Harbor Ledge Light, from November 10, 2025, to June 15, 2026, 24 hours a day, in positions 41° 0' 30.05\" N; 73° 33' 13.37\" W; 41° 0' 23.12\" N; 73° 13' 33 10.04\" W. The area will be marked by eight (8) white and orange regulatory buoys.\n\nLocation:\n41-00-30.024N/073-33-13.356W\n41-00-23.112N/073-13-33.024W\n\n","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-73.55371,41.00834],[-73.22584,41.00642]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":34393,"geometry":{"type":"LineString","coordinates":[[-93.66608999999994,29.417030000000068],[-93.66700999999995,29.48201000000006],[-93.69435999999996,29.505610000000047],[-93.80364999999995,29.598400000000026],[-93.82573999999994,29.644460000000038],[-93.83517999999998,29.68608000000006],[-93.85073999999997,29.70814000000007],[-93.86527999999998,29.72733000000005],[-93.88323999999994,29.748790000000042],[-93.89033999999998,29.75714000000005],[-93.90818999999999,29.762000000000057]]},"properties":{"ESRI_OID":34393,"MSI_UID":34393,"ATU":8,"TITLE":"Sector Houston-Galveston, Submerged Land Act (SLA) - Sabine Pass/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116385196,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:sechouexcecozon:sechoutersea:sechousublanact:sabpas","WATERWAY_NAME":"Sabine Pass","CREATE_DATE":1767036729000,"MODIFIED_DATE":1775056640000,"BEGIN_DATE":1766966400000,"END_DATE":1806883199000,"DESCRIPTION":"Sabine Bank Channel - Sabine Pass - Dredge Operation --- From: 2026-02-09 To: 2027-04-03 --- Dredging will be conducted throughout the Sabine Bank Channel and in Sabine Pass.  Operations will be conducted 24-hours a day, 7-days a week.  Dredged material will be disposed in offshore disposal sites.  On-scene vessels may include the Dredges DODGE ISLAND, AMELIA ISLAND, ELLIS ISLAND or GALVESTON ISLAND, the Survey Vessel LADY BECKY, and the Survey Vessel JONATHAN WOODWARD.  Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made.  VHF-FM Channels: 13 and 16","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-93.66609,29.41703],[-93.66701,29.48201],[-93.69436,29.50561],[-93.80365,29.5984],[-93.82574,29.64446],[-93.83518,29.68608],[-93.85074,29.70814],[-93.86528,29.72733],[-93.88324,29.74879],[-93.89034,29.75714],[-93.90819,29.762]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":36038,"geometry":{"type":"LineString","coordinates":[[-94.82096999999999,29.310960000000023],[-94.81513999999999,29.310860000000048],[-94.80014999999997,29.310960000000023],[-94.79167999999999,29.312860000000057],[-94.78434999999996,29.318250000000035],[-94.78045999999995,29.322140000000047],[-94.77793999999994,29.328520000000026],[-94.77599999999995,29.33341000000007],[-94.77107999999998,29.34169000000003]]},"properties":{"ESRI_OID":36038,"MSI_UID":36038,"ATU":8,"TITLE":"Houston Ship Channel - Galveston Channel/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116385127,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:sechouexcecozon:sechoutersea:sechousublanact:galbayentcha:houshicha:galcha","WATERWAY_NAME":"Galveston Channel","CREATE_DATE":1769712017000,"MODIFIED_DATE":1771861057000,"BEGIN_DATE":1770163200000,"END_DATE":1781222399000,"DESCRIPTION":"Galveston Channel - Dredge Operation --- From: 2026-02-06 To: 2026-06-10 --- The Dredge MISSOURI H will be working in the Galveston Channel, 24-hours a day, 7-days a week.  Dredged material will be pumped via floating, pontoon, and submerged pipeline to the disposal site on Pelican Island.  On-scene vessels will include tender boats, survey vessels, and supply barges.  Mariners should coordinate passing arrangements with the dredge 1-hour in advance and are urged to transit with caution.  VHF-FM Channels: 13 and 16, POC: (337) 302-2355","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-94.82097,29.31096],[-94.81514,29.31086],[-94.80015,29.31096],[-94.79168,29.31286],[-94.78435,29.31825],[-94.78046,29.32214],[-94.77794,29.32852],[-94.776,29.33341],[-94.77108,29.34169]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":36306,"geometry":{"type":"LineString","coordinates":[[-71.22725999999994,41.62195000000003],[-71.22885999999994,41.52264000000008],[-71.24487999999997,41.488530000000026]]},"properties":{"ESRI_OID":36306,"MSI_UID":36306,"ATU":1,"TITLE":"Sector Southeastern New England, Submerged Lands Act (SLA) - Sakonnet River/General/Marine Construction (Excluding Bridges)/Survey Operations","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Survey Operations","WTRW_UID":100116382355,"MRN":"urn:mrn:iala:wwy:us:navIV:dis1:secsounewengexcecozon:secsounewengtersea:secsounewengsublanact:sakriv","WATERWAY_NAME":"Sakonnet River","CREATE_DATE":1770128091000,"MODIFIED_DATE":1770128097000,"BEGIN_DATE":1770076800000,"END_DATE":1798847999000,"DESCRIPTION":"General/Marine Construction (Excluding Bridges)/Survey Operations\n\nFrom: 2026-02-03 To: 2027-01-01\n\nVATN Systems will be conducting AUV testing in the Sakonnet River, from Island Park to Third Beach, from February 2, 2026, to December 31, 2026, between 8:00am to 5:00pm. Equipment on scene will be a support vessel, AUV with a boat in tow, monitoring VHF-FM CH 16.\n\n\n","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-71.22726,41.62195],[-71.22886,41.52264],[-71.24488,41.48853]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":38387,"geometry":{"type":"LineString","coordinates":[[-74.02064999999999,40.66207000000003],[-74.04994999999997,40.63220000000007],[-74.02705999999995,40.56964000000005],[-73.68098999999995,40.417860000000076],[-73.34452999999996,40.33591000000007],[-73.40357999999998,40.28635000000003],[-73.67777999999998,40.41333000000003]]},"properties":{"ESRI_OID":38387,"MSI_UID":38387,"ATU":1,"TITLE":"Sector New York, Submerged Lands Act (SLA) - Ambrose Channel/General/Marine Construction (Excluding Bridges)/Survey Operations","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Survey Operations","WTRW_UID":100116382165,"MRN":"urn:mrn:iala:wwy:us:navIV:dis1:secnewyorexcecozon:secnewyortersea:secnewyorsublanact:ambcha","WATERWAY_NAME":"Ambrose Channel","CREATE_DATE":1772650289000,"MODIFIED_DATE":1772650296000,"BEGIN_DATE":1772582400000,"END_DATE":1776383999000,"DESCRIPTION":"General/Marine Construction (Excluding Bridges)\n\nFrom: 2026-03-04 To: 2026-04-16\n\nThe vessel SHELIA BORDELON will be conducting rock net installation and ROV operations along the export cable corridor associated with Lease Area OCS-A 0512 in the New York/New Jersey Bight, in position 40°20’26.44N, 73°26’51.58W. Operations will commence on or about March 5, 2026 until approximately April 15, 2026 and will be conducted 7 days per week, 24 hours per day. The vessel will be restricted/limited in her ability to maneuver. During operations, the remotely operated vehicle may operate as far as 150m (500 feet) away from the host vessel with a power and communications umbilical running between the vessel and the remote vehicle. The SHELIA BORDELON will be monitoring VHF-FM CH 16, for any concerned traffic.\n\n","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-74.02065,40.66207],[-74.04995,40.6322],[-74.02706,40.56964],[-73.68099,40.41786],[-73.34453,40.33591],[-73.40358,40.28635],[-73.67778,40.41333]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":38555,"geometry":{"type":"LineString","coordinates":[[-90.15741999999995,30.375720000000058],[-90.15965999999997,30.37504000000007]]},"properties":{"ESRI_OID":38555,"MSI_UID":38555,"ATU":8,"TITLE":"The Rigolets - Lakes Pontchartrain And Maurepas/General/Marine Construction (Excluding Bridges)/Facilities, Barriers, Manmade Reefs, Riprap, Jetties/Dikes","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Facilities, Barriers, Manmade Reefs, Riprap, Jetties/Dikes","WTRW_UID":100117410918,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:secneworlexcecozon:secneworltersea:secneworlsublanact:graislcha:lakbor:therig:lakponandmau","WATERWAY_NAME":"Lakes Pontchartrain And Maurepas","CREATE_DATE":1772833826000,"MODIFIED_DATE":1773239868000,"BEGIN_DATE":1772755200000,"END_DATE":1785887999000,"DESCRIPTION":"Lake Pontchartrain - Tchefuncte River - Breakwater Construction --- From: 2026-03-09 To: 2026-08-03 --- Breakwater construction will be conducted in Lake Pontchartrain at the mouth of the Lower Tchefuncte River, near approximate positions 30-22-30.16N 090-09-34.78W and 30-22-32.61N 090-09-26.74W.  Operations will be conducted daily, from 7:00 a.m. to 5:30 p.m.  Mariners are urged to transit the area at their slowest safe speed to minimize wake and proceed with caution. VHF-FM Channel: 16,  POC: (361) 533-3805","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-90.15742,30.37572],[-90.15966,30.37504]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":38768,"geometry":{"type":"LineString","coordinates":[[-95.00804999999997,29.68065000000007],[-94.98392999999999,29.684370000000058],[-94.98145999999997,29.681370000000072],[-94.98360999999994,29.68584000000004],[-94.98428999999999,29.686860000000024],[-94.98721999999998,29.69038000000006],[-94.99761999999998,29.69813000000005],[-95.00157999999999,29.699910000000045],[-95.01173999999997,29.701320000000067],[-95.01483999999994,29.702350000000024],[-95.01874999999995,29.705710000000067],[-95.02064999999999,29.709730000000036],[-95.02079999999995,29.721740000000068],[-95.02465999999998,29.72724000000005],[-95.02846999999997,29.730020000000025],[-95.04601999999994,29.731670000000065],[-95.05240999999995,29.734650000000045],[-95.05827999999997,29.738630000000057],[-95.06852999999995,29.756890000000055],[-95.07400999999999,29.76090000000005],[-95.07991999999996,29.763510000000053],[-95.08588999999995,29.763340000000028],[-95.08959999999996,29.761360000000025],[-95.09617999999995,29.751090000000033],[-95.10643999999996,29.742360000000076],[-95.11592999999999,29.738920000000064],[-95.12483999999995,29.734610000000032],[-95.12985999999995,29.734360000000038],[-95.13746999999995,29.72879000000006]]},"properties":{"ESRI_OID":38768,"MSI_UID":38768,"ATU":8,"TITLE":"Galveston Bay Entrance Channel - Houston Ship Channel/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116385131,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:sechouexcecozon:sechoutersea:sechousublanact:galbayentcha:houshicha","WATERWAY_NAME":"Houston Ship Channel","CREATE_DATE":1773072148000,"MODIFIED_DATE":1773941647000,"BEGIN_DATE":1763424000000,"END_DATE":1784678399000,"DESCRIPTION":"Houston Ship Channel - Dredge Operation --- From: 2026-01-26 To: 2026-07-20 --- Mechanical maintenance dredging will be conducted in the Houston Ship Channel, from the Barbours Cut Terminal to Boggy Basin.  Operations will be conducted 24-hours a day, 7-days a week.  The dredge is currently operating between Houston Ship Channel Light 123 (LLNR-25490) and Houston Ship Channel Light 127 (LLNR-25695).  Dredged material will be transported in scows to the east side of Lost Lake where an offloading barge will pump dredge spoils inside the island.  On-scene vessels will include the Dredge DB CATALINA, T/Vs CORRINE C., MABEL C., COLUMBIA and HELEN, three scows, the Crew Boat MISS LEIGHTYN and MONICA C., a survey vessel, and an offloading barge.  The dredge will work within the channel and may reduce the channel limits by approximately 150 ft.  Vessels should coordinate with the dredge 30-minutes in advance.  Mariners are urged to transit at their slowest safest speed to minimize wake and proceed with caution after passing arrangements have been made.  VHF-FM Channel: 81,  POC: (619) 992-5392","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-95.00805,29.68065],[-94.98393,29.68437],[-94.98146,29.68137],[-94.98361,29.68584],[-94.98429,29.68686],[-94.98722,29.69038],[-94.99762,29.69813],[-95.00158,29.69991],[-95.01174,29.70132],[-95.01484,29.70235],[-95.01875,29.70571],[-95.02065,29.70973],[-95.0208,29.72174],[-95.02466,29.72724],[-95.02847,29.73002],[-95.04602,29.73167],[-95.05241,29.73465],[-95.05828,29.73863],[-95.06853,29.75689],[-95.07401,29.7609],[-95.07992,29.76351],[-95.08589,29.76334],[-95.0896,29.76136],[-95.09618,29.75109],[-95.10644,29.74236],[-95.11593,29.73892],[-95.12484,29.73461],[-95.12986,29.73436],[-95.13747,29.72879]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":38887,"geometry":{"type":"LineString","coordinates":[[-94.82134999999994,29.310940000000073],[-94.81138999999996,29.30949000000004],[-94.80056999999994,29.309240000000045],[-94.79261999999994,29.311190000000067],[-94.78552999999994,29.315180000000055],[-94.77819999999997,29.322460000000035],[-94.77550999999994,29.33179000000007],[-94.77258999999998,29.337530000000072],[-94.76698999999996,29.340620000000058]]},"properties":{"ESRI_OID":38887,"MSI_UID":38887,"ATU":8,"TITLE":"Houston Ship Channel - Galveston Channel/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116385127,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:sechouexcecozon:sechoutersea:sechousublanact:galbayentcha:houshicha:galcha","WATERWAY_NAME":"Galveston Channel","CREATE_DATE":1773150995000,"MODIFIED_DATE":1774883202000,"BEGIN_DATE":1772755200000,"END_DATE":1784332799000,"DESCRIPTION":"Galveston Channel - Dredge Operation --- From: 2026-04-04 To: 2026-07-16 --- The Dredge LORRAINE HOOKS will be working in the Galveston Channel starting near the west end of the Galveston Harbor near the lift bridge.  Operations will be conducted from 6:00 a.m. to 6:00 p.m., daily.  The dredge will work in the center of the channel and move for vessel traffic, as needed.  Dredged material will be pumped via floating, pontoon, and submerged pipeline to the disposal site on Pelican Island.  On-scene vessels will include the M/Vs GODS GRACE, RONNIE, and ANDI B.  Mariners should coordinate passing arrangements with the dredge 1-hour in advance and are urged to transit with caution.  VHF-FM Channels: 13, 16 and 80, POC: (337) 244-3911","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-94.82135,29.31094],[-94.81139,29.30949],[-94.80057,29.30924],[-94.79262,29.31119],[-94.78553,29.31518],[-94.7782,29.32246],[-94.77551,29.33179],[-94.77259,29.33753],[-94.76699,29.34062]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":39072,"geometry":{"type":"LineString","coordinates":[[-73.94425999999999,41.71461000000005],[-73.94608999999997,41.69581000000005],[-73.94437999999997,41.67607000000004],[-73.95295999999996,41.61817000000008],[-73.95821999999998,41.577090000000055],[-73.99163999999996,41.53830000000005],[-73.99850999999995,41.498290000000054],[-73.99953999999997,41.454210000000046],[-73.97538999999995,41.43131000000005],[-73.96245999999996,41.40453000000008],[-73.94792999999999,41.39646000000005],[-73.95982999999995,41.36160000000007],[-73.96130999999997,41.34648000000004],[-73.98328999999995,41.32465000000008],[-73.98408999999998,41.31726000000003],[-73.94780999999995,41.28640000000007],[-73.97344999999996,41.257670000000076],[-73.94894999999997,41.210510000000056],[-73.93235999999996,41.18011000000007],[-73.88234999999997,41.142030000000034],[-73.87788999999998,41.12824000000006],[-73.88280999999995,41.08064000000007],[-73.88188999999994,41.053630000000055],[-73.88543999999996,41.02575000000007],[-73.89893999999998,40.965370000000064],[-73.89905999999996,40.96512000000007]]},"properties":{"ESRI_OID":39072,"MSI_UID":39072,"ATU":1,"TITLE":"Main Channel - Hudson River/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116382131,"MRN":"urn:mrn:iala:wwy:us:navIV:dis1:secnewyorexcecozon:secnewyortersea:secnewyorsublanact:ambcha:maicha:hudriv","WATERWAY_NAME":"Hudson River","CREATE_DATE":1773315001000,"MODIFIED_DATE":1773315011000,"BEGIN_DATE":1773273600000,"END_DATE":1777679999000,"DESCRIPTION":"General/Marine Construction (Excluding Bridges)/Dredging\n\nFrom: 2026-03-22 To: 2026-05-01\n\nCaldwell Marine International, LLC will be conducting river remediation operations, on the Hudson between positions 41.712359N, -73.944126W and 40.972749N, -73.89461W, from March 22, 2026, to April 30, 2026. Equipment on scene will be the crew transfer vessels MAREN and JOURY, and the tugs FOXY 3 and AUSTIN. Please reach out on VHF-FM CH 73 to ensure that there are no divers in the water. Please keep a 500’ distance away from the barge and 100’ from the set anchors. Please don’t enter the anchor spread.\n\n","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-73.94426,41.71461],[-73.94609,41.69581],[-73.94438,41.67607],[-73.95296,41.61817],[-73.95822,41.57709],[-73.99164,41.5383],[-73.99851,41.49829],[-73.99954,41.45421],[-73.97539,41.43131],[-73.96246,41.40453],[-73.94793,41.39646],[-73.95983,41.3616],[-73.96131,41.34648],[-73.98329,41.32465],[-73.98409,41.31726],[-73.94781,41.2864],[-73.97345,41.25767],[-73.94895,41.21051],[-73.93236,41.18011],[-73.88235,41.14203],[-73.87789,41.12824],[-73.88281,41.08064],[-73.88189,41.05363],[-73.88544,41.02575],[-73.89894,40.96537],[-73.89906,40.96512]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":39239,"geometry":{"type":"LineString","coordinates":[[-118.49965999999995,33.724600000000066],[-117.90610999999996,33.29490000000004]]},"properties":{"ESRI_OID":39239,"MSI_UID":39239,"ATU":11,"TITLE":"Sector Los Angeles, Territorial Sea/General/Marine Construction (Excluding Bridges)/Survey Operations","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Survey Operations","WTRW_UID":100116385454,"MRN":"urn:mrn:iala:wwy:us:navXII:dis11:seclosangexcecozon:seclosangtersea","WATERWAY_NAME":"Sector Los Angeles, Territorial Sea","CREATE_DATE":1773679312000,"MODIFIED_DATE":1773693502000,"BEGIN_DATE":1774569600000,"END_DATE":1778543999000,"DESCRIPTION":"EGS Group will be conducting 24/7 cable route survey operations for a proposed undersea telecommunications cable in US Pacific coastal and marine waters. The scope of operations includes stern deployment of a sonar towfish tethered with steel cable at varying water depths to collect geophysical and bathymetric mapping data. The towfish towing wire layback will be three times the water depth behind the vessel stern, with a maximum tow operation depth of 1,200 meters. The sonar sensor will be towed approximately 20–40 meters from the seafloor within a 250-meter-wide survey corridor centered on the survey centerline.\n\nSurvey operations are scheduled to take place from April 10, 2026, through May 10, 2026.\n\nSurvey activities will occur between approximately 33.72460° N, -118.49966° W and 33.29490° N, -117.90611° W.\n\nThe R/V Bold Explorer will monitor VHF Channels 16 and 13 throughout the operation.\n\nFor additional information or 24-hour contact, please reach the Survey Party Chief/Bridge at +1-929-481-5774.\n\nAll mariners are advised to transit the area with caution.","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-118.49966,33.7246],[-117.90611,33.2949]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":40353,"geometry":{"type":"LineString","coordinates":[[-76.68995999999999,34.708980000000054],[-76.66977999999995,34.696420000000046],[-76.66636999999997,34.68763000000007],[-76.68627999999995,34.60603000000003],[-76.68662999999998,34.605740000000026]]},"properties":{"ESRI_OID":40353,"MSI_UID":40353,"ATU":5,"TITLE":"Morehead City Harbor Channel/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116382870,"MRN":"urn:mrn:iala:wwy:us:navIV:dis5:secnorcarexcecozon:secnorcartersea:secnorcarsublanact:beainl:morcitcha:bogsou:morcitharcha","WATERWAY_NAME":"Morehead City Harbor Channel","CREATE_DATE":1775052802000,"MODIFIED_DATE":1775561227000,"BEGIN_DATE":1764547200000,"END_DATE":1777593599000,"DESCRIPTION":"General/Marine Construction (Excluding Bridges)/Dredging\n\nFrom: 2025-12-24 To: 2026-04-30\n\nLocation:\n34-42-32.328N/076-41-23.856W\n34-41-47.112N/076-40-11.208W\n34-41-15.468N/076-39-58.932W\n34-36-21.708N/076-41-10.608W\n34-36-20.664N/076-41-11.868W\nGreat Lakes Dredge and Dock will be performing dredging operations in Morehead City Channel.  January through April 2026 the Hopper Dredge Amelia Island, Galveston Island, and Liberty Island can be reached on VHF channels 13 and 16.  Project manager Bryan Dast (630) 699-9995. MSI # 40353.\n\n","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-76.68996,34.70898],[-76.66978,34.69642],[-76.66637,34.68763],[-76.68628,34.60603],[-76.68663,34.60574]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":40359,"geometry":{"type":"LineString","coordinates":[[-95.77675999999997,28.748820000000023],[-95.78119999999996,28.748680000000036],[-95.78368999999998,28.748360000000048],[-95.80391999999995,28.743070000000046],[-95.81123999999994,28.74111000000005],[-95.84376999999995,28.73115000000007],[-95.88496999999995,28.71783000000005],[-95.91503999999998,28.70935000000003],[-95.92736999999994,28.704450000000065],[-95.96472999999997,28.687230000000056],[-96.00057999999996,28.67064000000005],[-96.01965999999999,28.66193000000004],[-96.04309999999998,28.659140000000036],[-96.04472999999996,28.658510000000035],[-96.06337999999994,28.647970000000043],[-96.06618999999995,28.645890000000065],[-96.06872999999996,28.642970000000048],[-96.07201999999995,28.638780000000054],[-96.07456999999994,28.63712000000004],[-96.07662999999997,28.63647000000003],[-96.08437999999995,28.634990000000073],[-96.08803999999998,28.633660000000077],[-96.09310999999997,28.630520000000047],[-96.09902999999997,28.626630000000034],[-96.10125999999997,28.62585000000007],[-96.10368999999997,28.625800000000027],[-96.10820999999999,28.626270000000034],[-96.10986999999994,28.625950000000046],[-96.16462999999999,28.61110000000008],[-96.16869999999994,28.608970000000056],[-96.17180999999994,28.60623000000004],[-96.19452999999999,28.57591000000008]]},"properties":{"ESRI_OID":40359,"MSI_UID":40359,"ATU":8,"TITLE":"Matagorda Ship Channel - Matagorda Bay/General/Marine Construction (Excluding Bridges)/Facilities, Barriers, Manmade Reefs, Riprap, Jetties/Dikes","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Facilities, Barriers, Manmade Reefs, Riprap, Jetties/Dikes","WTRW_UID":100116384787,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:seccorchrexcecozon:seccorchrtersea:seccorchrsublanact:matshicha:matbay","WATERWAY_NAME":"Matagorda Bay","CREATE_DATE":1775059385000,"MODIFIED_DATE":1775059580000,"BEGIN_DATE":1775001600000,"END_DATE":1785196799000,"DESCRIPTION":"GIWW - Dredge Operation --- From: 2024-03-30 To: 2026-07-26 --- The Dredge CONSTELLATION will conduct dredging operations in the GIWW, between Miles 428.0 and 457.0, WHL.  The dredge will operate 24-hours a day, 7-days a week.  On-scene vessels and equipment will include floating and submerged pipeline, a supply barge, an anchor barge, a crane barge and three tender boats.  Additional pipeline will be staged along the GIWW within the project area.  Mariners are urged to transit the area at their slowest safe speed to minimize wake and proceed with caution.  VHF-FM Channel: 13, 16, and 66","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-95.77676,28.74882],[-95.7812,28.74868],[-95.78369,28.74836],[-95.80392,28.74307],[-95.81124,28.74111],[-95.84377,28.73115],[-95.88497,28.71783],[-95.91504,28.70935],[-95.92737,28.70445],[-95.96473,28.68723],[-96.00058,28.67064],[-96.01966,28.66193],[-96.0431,28.65914],[-96.04473,28.65851],[-96.06338,28.64797],[-96.06619,28.64589],[-96.06873,28.64297],[-96.07202,28.63878],[-96.07457,28.63712],[-96.07663,28.63647],[-96.08438,28.63499],[-96.08804,28.63366],[-96.09311,28.63052],[-96.09903,28.62663],[-96.10126,28.62585],[-96.10369,28.6258],[-96.10821,28.62627],[-96.10987,28.62595],[-96.16463,28.6111],[-96.1687,28.60897],[-96.17181,28.60623],[-96.19453,28.57591]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":40361,"geometry":{"type":"LineString","coordinates":[[-96.30252999999999,28.506120000000067],[-96.31385999999998,28.53508000000005],[-96.31339999999994,28.53860000000003],[-96.27803999999998,28.602720000000033],[-96.22641999999996,28.695920000000058]]},"properties":{"ESRI_OID":40361,"MSI_UID":40361,"ATU":8,"TITLE":"Matagorda Bay - Palacios Channel/General/Marine Construction (Excluding Bridges)/Facilities, Barriers, Manmade Reefs, Riprap, Jetties/Dikes","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Facilities, Barriers, Manmade Reefs, Riprap, Jetties/Dikes","WTRW_UID":100116385137,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:seccorchrexcecozon:seccorchrtersea:seccorchrsublanact:matshicha:matbay:palcha","WATERWAY_NAME":"Palacios Channel","CREATE_DATE":1775059616000,"MODIFIED_DATE":1775060398000,"BEGIN_DATE":1780272000000,"END_DATE":1788134399000,"DESCRIPTION":"GIWW - Dredge Operation --- From: 2024-08-04 To: 2026-08-29 --- The Dredge CONSTELLATION will conduct dredging operations in the Palacios Channel.  The dredge will operate 24-hours a day, 7-days a week.  On-scene vessels and equipment will include floating and submerged pipeline, a supply barge, an anchor barge, a crane barge and three tender boats.  Additional pipeline may be staged along the GIWW within the project area.  Mariners are urged to transit the area at their slowest safe speed to minimize wake and proceed with caution.  VHF-FM Channel: 13, 16, and 66","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-96.30253,28.50612],[-96.31386,28.53508],[-96.3134,28.5386],[-96.27804,28.60272],[-96.22642,28.69592]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":40395,"geometry":{"type":"LineString","coordinates":[[-90.67079999999999,29.234610000000032],[-90.66770999999994,29.23082000000005],[-90.66456999999997,29.22762000000006],[-90.65649999999994,29.22153000000003],[-90.64253999999994,29.211340000000064],[-90.61472999999995,29.190960000000075],[-90.61220999999995,29.188360000000046],[-90.61008999999996,29.18557000000004],[-90.60819999999995,29.181670000000054],[-90.59246999999993,29.143490000000043],[-90.58101999999997,29.115350000000035],[-90.57672999999994,29.104810000000043],[-90.57626999999997,29.101560000000063],[-90.57661999999999,29.098460000000046],[-90.57787999999994,29.095060000000046],[-90.58428999999995,29.082750000000033],[-90.58525999999995,29.078800000000058],[-90.58542999999997,29.07475000000005],[-90.58262999999994,29.065500000000043],[-90.57532999999995,29.04486000000003]]},"properties":{"ESRI_OID":40395,"MSI_UID":40395,"ATU":8,"TITLE":"Cat Island Pass - Houma Navigation Canal/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116384874,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:secneworlexcecozon:secneworltersea:secneworlsublanact:catislpas:hounavcan","WATERWAY_NAME":"Houma Navigation Canal","CREATE_DATE":1775072973000,"MODIFIED_DATE":1775486518000,"BEGIN_DATE":1775001600000,"END_DATE":1788134399000,"DESCRIPTION":"Houma Navigation Canal - Cat Island Pass - Dredge Operation --- From: 2026-04-02 To: 2026-08-29 --- The Dredge KING FISHER and EMIL KURTZ will be working in the Houma Navigation Canal, from approximately Mile 12.0 to Mile -3.0.  The dredge will work 24-hours a day, 7-days a week.  Dredged material will be deposited into open water through a floating pipeline located approximately 2,000 ft west of the Houma Navigation Canal channel centerline.  Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made.  VHF-FM Channels: 13 and 16, POC: USACE (504) 862-2373\n","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-90.6708,29.23461],[-90.66771,29.23082],[-90.66457,29.22762],[-90.6565,29.22153],[-90.64254,29.21134],[-90.61473,29.19096],[-90.61221,29.18836],[-90.61009,29.18557],[-90.6082,29.18167],[-90.59247,29.14349],[-90.58102,29.11535],[-90.57673,29.10481],[-90.57627,29.10156],[-90.57662,29.09846],[-90.57788,29.09506],[-90.58429,29.08275],[-90.58526,29.0788],[-90.58543,29.07475],[-90.58263,29.0655],[-90.57533,29.04486]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":40421,"geometry":{"type":"LineString","coordinates":[[-70.62857999999994,41.48975000000007],[-70.61385999999999,41.536460000000034]]},"properties":{"ESRI_OID":40421,"MSI_UID":40421,"ATU":1,"TITLE":"Sector Southeastern New England, Submerged Lands Act (SLA) - Main Channel/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116382005,"MRN":"urn:mrn:iala:wwy:us:navIV:dis1:secsounewengexcecozon:secsounewengtersea:secsounewengsublanact:maicha","WATERWAY_NAME":"Main Channel","CREATE_DATE":1775128082000,"MODIFIED_DATE":1775128090000,"BEGIN_DATE":1771977600000,"END_DATE":1777593599000,"DESCRIPTION":"General/Marine Construction (Excluding Bridges)/Dredging\n\nFrom: 2026-02-25 To: 2026-04-30\n\nCaldwell Marine International, LLC will be conducting mattress installation operations for the Martha’s Vineyard Line 70 and Line 91B Project in Vineyard Haven Harbor from February 26, 2026, to April 30, 2026, seven days a week, between 6:00am to 6:00pm.  CMI Barge will operate with anchors for mooring, beginning at 41-29.385N, 070-37.715W, and travel throughout the CFE & mattress installation to 41-32.188N, 070-36.832W. The anchor positions for the barge, when moored, are illuminated with lights on the pennant buoys and visible for up to two miles. Equipment on scene will be CMI Dive Support Barge: ‘Hughes 181’ (180ft length x 54ft beam), Support Tug: ‘David Winslow’ (62.3 ft length x 23.0 ft beam) – AIS Equipped, Anchor Handline Support Tug: ‘Toula C’ (69 ft length x 19.6 ft beam) - AIS Equipped Crew Transfer Vessel: ‘Alexis’ (55 ft length x 16 ft beam) – AIS Equipped, will be monitoring VHF-FM CH 16 and 73. The barge is unable to move position once anchored. Wide berth is requested. Operation will have CFE equipment as well as divers in the water at intervals adjacent to the barge. Vessels should take notice of Diver Down flag and communicate on the Hailing and Working Channels.\n\n","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-70.62858,41.48975],[-70.61386,41.53646]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}},{"type":"Feature","id":40685,"geometry":{"type":"LineString","coordinates":[[-89.43146999999999,28.876720000000034],[-89.43126999999998,28.904360000000054],[-89.42338999999998,28.911760000000072],[-89.39465999999999,28.95338000000004],[-89.33193999999997,29.028970000000072],[-89.31730999999996,29.04531000000003],[-89.30912999999998,29.059540000000027],[-89.28867999999994,29.077360000000056],[-89.27956999999998,29.090410000000077],[-89.26071999999994,29.125600000000077],[-89.25592999999998,29.13725000000005],[-89.25442999999996,29.162390000000073],[-89.26617999999996,29.188870000000065],[-89.28882999999996,29.22335000000004],[-89.30108999999999,29.23625000000004],[-89.31643999999994,29.248790000000042],[-89.32307999999995,29.25359000000003],[-89.34614999999997,29.27147000000008],[-89.35861999999997,29.287240000000054],[-89.36530999999997,29.300220000000024],[-89.36630999999994,29.30152000000004],[-89.36726999999996,29.302970000000073],[-89.36879999999996,29.305180000000064],[-89.36984999999999,29.306400000000053],[-89.37031999999994,29.30702000000008]]},"properties":{"ESRI_OID":40685,"MSI_UID":40685,"ATU":8,"TITLE":"Sector New Orleans, Submerged Land Act (SLA) - Southwest Pass/General/Marine Construction (Excluding Bridges)/Dredging","STATUS":"Approved","MSI_GROUP":"General","SUB_CATEGORY":"Marine Construction (Excluding Bridges)","TYPE":"Dredging","WTRW_UID":100116384958,"MRN":"urn:mrn:iala:wwy:us:navIV:dis8:secneworlexcecozon:secneworltersea:secneworlsublanact:souwespas","WATERWAY_NAME":"Southwest Pass","CREATE_DATE":1775493409000,"MODIFIED_DATE":1775495110000,"BEGIN_DATE":1775433600000,"END_DATE":1782950399000,"DESCRIPTION":"Mississippi River - Southwest Pass - Dredge Operation --- From: 2026-04-9 To: 2026-06-30 --- The Dredge GLENN EDWARDS will conduct dredging in Southwest Pass, from Head of Passes (Mile 0.0) to approximately Mile -22.0, BHOP, and in the Mississippi River, from Head of Passes to approximately Mile 13.0, AHOP.  Work will take place 24-hours a day, 7-days a week.  Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made.  VHF-FM Channels: 16 or 67, POC: USACE (504) 862-1253.","COORDINATES_JSON":"{\"type\":\"LineString\",\"coordinates\":[[-89.43147,28.87672],[-89.43127,28.90436],[-89.42339,28.91176],[-89.39466,28.95338],[-89.33194,29.02897],[-89.31731,29.04531],[-89.30913,29.05954],[-89.28868,29.07736],[-89.27957,29.09041],[-89.26072,29.1256],[-89.25593,29.13725],[-89.25443,29.16239],[-89.26618,29.18887],[-89.28883,29.22335],[-89.30109,29.23625],[-89.31644,29.24879],[-89.32308,29.25359],[-89.34615,29.27147],[-89.35862,29.28724],[-89.36531,29.30022],[-89.36631,29.30152],[-89.36727,29.30297],[-89.3688,29.30518],[-89.36985,29.3064],[-89.37032,29.30702]]}","COORDINATES_TYPE":"LineString","DECIMAL_LONGITUDE":null,"DECIMAL_LATITUDE":null}}]}