US Coast Guard LNM - Heartland District Gulf (D8)
US · 296 in force · 35 new this week · 260 archived · updated 11 Nov 2026, 19:02 UTC · page 1 of 6
- MATAGORDA SHIP CHANNEL - MATAGORDA BAY General / Hazards To Navigation / Wrecks East Matagorda Bay - Sunk P/C --- Reported: 2026-11-08 --- A 17ft flat bottom P/C has been reported sunk, in approximate position 28-44.16N 095-46.98W, on November 8, 2026. The sunk P/C is reportedly not marked. Mariners are urged to avoid this area. Position 28-44.17N 095-46.98W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- Sector Corpus Christi, Territorial Sea - Sector Corpus Christi, Submerged Land Act (SLA) / Space Operations / Hazardous Warning Area / Commercial (Hazardous) Gulf of America - Laguna Madre - Hazardous Space Operations --- Space vehicle reentry operations, which may be hazardous to surface vessels, may take place within portions of the following hazard area for Starship Flight 15: A. Reentry Hazard Area: 25-56.00N 097-09.00W, 25-56.00N 097-05.00W, 25-57.00N 096-28.00W, 25-59.00N 096-25.00W, 26-10.00N 096-22.00W, 26-20.00N 096-52.00W, 26-46.00N 097-28.00W, 26-36.00N 097-27.00W, 26-22.00N 097-13.00W, 26-14.00N 097-09.00W, 26-06.00N 097-08.00W, 26-04.00N 097-09.00W, 26-03.00N 097-11.00W, 26-01.00N 097-13.00W and 25-58.00N 097-12.00W. Starship reentry and landing will take place approximately 22.5 hours after the initial Starship Flight 15 launch. Primary and backup reentry day hazard periods include: • 14/2108Z Nov 26 to 15/0014Z Nov 26 • 15/2108Z Nov 26 to 16/0014Z Nov 26 • 16/2108Z Nov 26 to 17/0014Z Nov 26 • 17/2108Z Nov 26 to 18/0014Z Nov 26 • 18/2108Z Nov 26 to 19/0014Z Nov 26 • 19/2108Z Nov 26 to 20/0014Z Nov 26 • 20/2108Z Nov 26 to 21/0014Z Nov 26 • The primary Starship vehicle landing area is Starbase Tower 2, located at approximate position 25-59.82N 097-09.49W. The alternate landing includes a splashdown within portions of the Reentry Hazard Area. Navigation hazards within the Reentry Hazard Area may include free falling debris and/or descending vehicles or vehicle components under various means of control. Mariners should avoid waters within the defined Reentry Hazard Area during the scheduled reentry window. For additional information, contact the U.S. Coast Guard Sector Corpus Christi Command Center at (800) 874-2143. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- NEW ORLEANS HARBOR - VIA MISSISSIPPI RIVER AND HARVEY CANAL General / Hazards To Navigation / Hazards GIWW - Harvey Lock Closure --- Reported: 2026-11-04 --- Due to hazardous river conditions, the Harvey Locks will be closed to navigation until further notice. Mariners are urged to use their slowest safe speed while passing the Lock/Harvey Canal to minimize impacts to the lock. Algiers Lock can be used as an alternate route. For up-to-date information, the Lockmaster at Harvey Lock can be reached at (504) 366-4683 or the lock wall can be contacted at (504) 366-5187. Position 29-54.67N 090-05.07W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR CORPUS CHRISTI, SUBMERGED LAND ACT (SLA) - BRAZOS SANTIAGO PASS General / Hazards To Navigation / Obstructions Brazos Santiago Pass - Submerged Subline --- Reported: 2026-11-03 --- A 157ft subline has been reported submerged outside the toe of the channel, in approximate position 26-03.89N 097-09.31W to 26-03.90N 097-09.29W, on November 3, 2026. The submerged subline is reportedly not marked. Mariners are urged to transit this area with caution. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-5653A9PAN PANSECTOR MOBILE, EXCLUSIVE ECONOMIC ZONE (EEZ) General / Naval Activity / Naval Gunnery Exercises Gulf of America - U.S. Air Force Operation --- --- The U.S. Air Force will conduct testing operations from Santa Rosa Island, FL, into the Gulf of America. The hazard area will be active from 6:00 a.m. to 6:00 p.m., daily. The hazard area will be bound by the following approximate positions: 30-13.57N 086-52.83W, 30-18.37N 086-51.52W, 30-22.28N 086-49.82W, 30-23.18N 086-48.50W, 30-23.38N 086-47.98W, 30-23.70N 086-45.40W, 30-23.63N 086-41.33W, 30-22.57N 086-35.92W, 30-19.93N 086-31.65W, 30-18.30N 086-26.65W, 30-15.28N 086-20.38W, 30-09.97N 086-16.05W, 29-59.60N 086-18.62W, 29-54.98N 086-24.55W, 29-53.78N 086-28.10W, 29-52.63N 086-36.58W, 29-55.13N 086-45.12W, 29-59.22N 086-47.68W and 30-05.83N 086-49.12W. All vessels are required to remain clear of the operation/hazard area during the mission periods. Hot range advisories and broadcast notice to mariners will be transmitted via VHF-FM Channel 16 and on HF Upper Sideband 2182 KHZ, by the Eglin Joint Test and Training Operations Control Center (call sign: Wolfcall). Valid 2026-11-18 to 2026-11-20. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR MOBILE, TERRITORIAL SEA - SECTOR MOBILE, SUBMERGED LAND ACT (SLA) General / Bridges / Repairs, Painting, Or Fender Replacement GIWW - Bridge Maintenance --- --- Re-painting and cleaning of the SR-71 Bridge in White City, FL, will take place over the GIWW, Mile 329.5, EHL. Work will be conducted from 7:00 a.m. to 8:00 p.m., six days a week. A temporary work platform will be attached to the lower side of the bridge structure to facilitate the coating replacement. This will temporarily reduce the existing vertical clearance height by 4 feet during the project. A safety skiff will be on standby at the worksite and moored near the bank. Mariners are urged to transit the area with caution and account for reduced air drafts. POC: (318) 366-3703 Valid 2027-01-04 to 2027-04-20. Position 29-52.80N 085-13.35W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-CAD8B3PAN PANSector Corpus Christi, Exclusive Economic Zone (EEZ) / Space Operations / Hazardous Warning Area / Commercial (Hazardous) Gulf of America - Hazardous Space Operations --- On November 13, 2026, between 2245Z and 0040Z, on November 14, 2026, rocket launching operations are scheduled to take place near Boca Chica, TX. Back-up launch dates and times include the following: • 142245Z NOV 26 to 150040Z NOV 26 • 152245Z NOV 26 to 160040Z NOV 26 • 162245Z NOV 26 to 170040Z NOV 26 • 172245Z NOV 26 to 180040Z NOV 26 • 182245Z NOV 26 to 190040Z NOV 26 • 192245Z NOV 26 to 200040Z NOV 26 • Navigation hazards from rocket launching activity may include, free falling debris and/or descending vehicles or vehicle components, under various means of control. Vessels should operate in a heightened state of awareness during the launch time and avoid all waters within rocket flight trajectories originating from the launch site near Boca Chica/Starbase, Texas, and extending across the Gulf of America. To ensure range clearance, mariners are requested to avoid the high-risk hazard area three hours prior to the launch window. For additional information regarding the launch, mariners can contact the U.S. Coast Guard Sector Corpus Christi Command Center at (800) 874-2143 or access: www.navcen.uscg.gov/msi USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-98CDBFSÉCURITÉSECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - CALCASIEU CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Calcasieu Channel – Calcasieu Loop – Dredge Operation --- --- Submerged dredge pipeline will be located on the Monkey Island side of the Calcasieu Channel and Calcasieu Loop along the top of slope. Sublines will cross the Calcasieu Loop Channel in two locations and will be properly marked. The Booster Barge CAL 2109 will be located in the northeast portion of the Loop, in approximate position 29-47.81N 093-19.72W and will be connected to the dredge operation at the CP1 Ship Berth via submerged steel and floating pipeline. Vessels are requested to avoid fishing or trawling within the area of the dredge pipeline, to avoid damage to nets, vessels, and project equipment. Mariners are urged to transit the area at their slowest safe speed to minimize wake and proceed with caution. Valid 2026-11-12 to 2026-12-12. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR NEW ORLEANS, EXCLUSIVE ECONOMIC ZONE (EEZ) - SECTOR NEW ORLEANS, TERRITORIAL SEA General / Hazards To Navigation / Wrecks Gulf of America - Adrift F/V --- Reported: 2026-11-08 --- The 85 ft red hull F/V OCEAN ONE has been reported adrift and burned in updated approximate position 29-08.77N 089-54.46W, on November 8, 2026. The adrift F/V OCEAN ONE is reportedly not marked. Mariners are urged to use extreme caution in this area and report any sightings or findings to the nearest U.S. Coast Guard unit. Position 29-08.77N 089-54.45W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAKES PONTCHARTRAIN AND MAUREPAS - CHEF MENTEUR PASS General / Hazards To Navigation / Wrecks Chef Menteur Pass - Partially Submerged P/C --- Reported: 2026-11-10 --- A 20 ft partially submerged flat bottom P/C has been reported, in approximate position 30-05.76N 089-49.08W, on November 10, 2026. The partially submerged flat bottom P/C is reportedly not marked. Mariners are urged to avoid this area. Position 30-05.77N 089-49.08W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- MOBILE BAR - MOBILE CHANNEL General / LAA / RNA / Safety Zone Mobile Channel - Safety Zone/Naval Protection Zone --- On: 2026-11-11 --- The U.S. Coast Guard, State, and local law enforcement will enforce a Naval Protection Zone and a Safety Zone on navigable waters within the Captain of the Port Mobile area for the arrival of the M/V EX ENTERPRISE, expected on or about November 11, 2026, until the vessel is towed to its final mooring on the Mobile River. The Safety Zone will include all navigable waters within the Mobile Bar Channel, beginning at Mobile Bar Lighted Buoy 1 (LLNR-6100), northward through the boundaries of the Mobile River Channel, ending at the Cochrane Bridge. This zone will be enforced to prevent meeting situations with the M/V EX ENTERPRISE during the dead-ship tow. Portions of the Safety Zone intersecting the GIWW or other intersections with Federal Channels will be enforced to the extent necessary to prevent meeting situations during the transit and are not expected to be enforced after the M/V EX ENTERPRISE and all vessels involved in the towing operation clear the intersection. The Naval Protection Zone will include a 500-yard zone around the vessel and will be enforced from the vessel’s entry into the COTP Mobile Zone until the vessel is safely moored on the Mobile River. No person or vessel may enter or remain in the zone unless authorized by the COTP or a designated representative. No vessel or person may enter within 100-yards without authorization. Vessels within 500-yards must operate at the minimum speed necessary to maintain a safe course. To seek permission to enter these zones, mariners can contact the COTP or the COTP’s representative on VHF-FM Channel 16 during the enforcement period. Those authorized transit within the zones, must comply with all lawful orders or directions given to them by the COTP or the COTP’s designated representative. Concerned parties should contact the U. S. Coast Guard Sector Mobile Command Center at (251) 266-5888 or on VHF-FM Channel 16. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-279F72SÉCURITÉTOMBIGBEE RIVER General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Tombigbee River - Offloading Operation --- On: 2026-11-24 --- The navigation channel on the Tombigbee River, Mile 89.8 (Jackson Landing), will be partially blocked during daylight hours for equipment offloading operations. The barge/tow will be perpendicular to the bank at the landing, extending approximately 270 ft toward the middle of the river. In the evening, equipment will be broken down and the channel will be cleared for navigation to pass. Mariners are urged to exercise extreme caution when transiting the area and should contact the M/V ISLAND TRADER when approaching the area. VHF-FM Channels: 13 and 16, POC: (314) 378-9801 Position 31-29.60N 087-54.32W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- THE RIGOLETS - LAKES PONTCHARTRAIN AND MAUREPAS General / Hazards To Navigation / Wrecks Lake Pontchartrain - Partially Submerged Vessel --- Reported: 2026-11-05 --- A vessel has been reported partially submerged and grounded on a jetty in Lake Pontchartrain in approximate position 30-02.05N 090-03.64W. The vessel is reportedly not marked. Mariners are urged to avoid the area. Position 30-02.05N 090-03.63W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-76A615SÉCURITÉMOBILE CHANNEL - TENSAWRIVER General / Marine Construction (Excluding Bridges) / Dredging Tensaw River - Mobile Bay - Dredge Operation --- --- Dredging will be conducted between the I-10 Bridges in Mobile and Polecat Bay near the Tensaw River. The dredge and dredging equipment will be operating within or moored/staged in the general project area from Pinto Island to just north of the I-10 Bayway Bridge in the vicinity of Polecat Bay. Operations will be conducted 24-hours a day, 7-days a week. Dredge spoils will be transported by floating and submerged pipeline and placed within the Pinto Island Disposal Area. Subline will run parallel to Pinto Island near the U.S.S. ALABAMA. Additional on-scene vessels will include barges, tug boats, crew boats, and construction equipment. Mariners are urged to use extreme caution in the area, transit at their slowest safe speed to minimize wake, and coordinate passing arrangements in advance. VHF-FM Channels: 10, 13, 16, 69 and 74, POC: (985) 960-2708 Valid 2026-11-25 to 2027-02-28. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR CORPUS CHRISTI, TERRITORIAL SEA - SECTOR CORPUS CHRISTI, SUBMERGED LAND ACT (SLA) General / Hazards To Navigation / Obstructions Brazos Island Harbor Channel - Submerged Subline --- Reported: 2026-11-03 --- A 174ft subline has been reported submerged outside the toe of the channel, in approximate position 26-04.00N 097-08.10W to 26-04.02N 097-08.08W, on November 3, 2026. The submerged subline is reportedly not marked. Mariners are urged to transit this area with caution. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- NEW ORLEANS PORT ARTHUR General / Bridges / Closure (Scheduled Or Emergency) GIWW - Bridge Closure and Repairs --- To: Until Further Notice --- The Grand Lake Swing/Pontoon Bridge located on the GIWW near Mile 231.4, WHL, will operate under a modified daily schedule due to repairs. The bridge will operate as follows: • 5:00 a.m. to 8:00 a.m.: Closed to marine traffic. • 8:00 a.m. to 8:00 p.m.: The bridge will operate as normal. • 8:00 p.m. to 5:00 a.m.: Repairs will be conducted. Marine traffic will be permitted to transit through the worksite upon notification. Mariners should contact the bridge operator at (337) 905-0106 for questions or updates regarding the work. Valid 2026-11-16 until further notice. Position 30-00.67N 093-13.68W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- NAVAREA IV / Space Operations / Hazardous Warning Area / Commercial (Hazardous) Gulf of America - Caribbean Sea --- Space launch operations, which may be hazardous to surface vessels, will be conducted within portions of the following hazard areas for Starship Flight 15: High Risk Hazard Area: 25-12.00N 092-58.00W 25-31.00N 093-52.00W 25-42.00N 095-24.00W 26-02.00N 096-32.00W 26-04.00N 096-49.00W 26-04.00N 097-04.00W 26-04.00N 097-10.00W 26-02.00N 097-13.00W 25-58.00N 097-13.00W 25-48.00N 097-05.00W 25-41.00N 096-47.00W 25-02.00N 095-05.00W 24-29.00N 094-08.00W 24-20.00N 093-32.00W 24-25.00N 092-52.00W and 24-45.00N 092-43.00W. Hazard Area: 25-58.00N 097-13.00W 26-02.00N 097-13.00W 26-04.00N 097-10.00W 26-06.00N 097-04.00W 26-06.00N 096-49.00W 26-01.00N 095-12.00W 25-41.00N 093-29.00W 25-11.00N 091-59.00W 23-32.00N 088-52.00W 23-21.00N 088-29.00W 22-31.00N 086-29.00W 21-41.00N 085-07.00W 21-38.00N 084-59.00W 21-33.00N 084-32.00W 21-26.00N 083-49.00W 20-59.00N 082-38.00W 20-43.00N 081-42.00W 20-31.00N 081-03.00W 20-12.00N 081-13.00W 20-36.00N 083-14.00W 21-06.00N 084-54.00W 21-43.00N 086-42.00W 21-59.00N 087-26.00W 22-16.00N 089-19.00W 22-16.00N 089-44.00W 22-16.00N 091-09.00W 23-16.00N 093-29.00W 24-36.00N 095-19.00W 25-38.00N 096-49.00W and 25-48.00N 097-05.00W. Primary and backup launch day hazard periods include: • 13/2245Z Nov 26 to 14/0040Z Nov 26 • 14/2245Z Nov 26 to 15/0040Z Nov 26 • 15/2245Z Nov 26 to 16/0040Z Nov 26 • 16/2245Z Nov 26 to 17/0040Z Nov 26 • 17/2245Z Nov 26 to 18/0040Z Nov 26 • 18/2245Z Nov 26 to 19/0040Z Nov 26 • 19/2245Z Nov 26 to 20/0040Z Nov 26 • Navigation hazards within the hazard areas may include free falling debris and/or descending vehicles or vehicle components under various means of control. Mariners should avoid waters within the defined hazard areas during the scheduled launch window. The high risk hazard area should be avoided three hours prior to the earliest launch to ensure range clearance. For additional information, contact the U.S. Coast Guard Sector Corpus Christi Command Center at (800) 874-2143. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-D27F0ASÉCURITÉSECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - CALCASIEU CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Calcasieu Channel – Calcasieu Loop – Dredge Operation --- --- The Dredge GENERAL ARNOLD will conduct berth maintenance dredging along the Calcasieu Channel near the southern end of the Calcasieu Loop. The dredge will set up along the LDB of the channel in the ship berth. The Booster Barge CAL 2109 will be connected to the dredge operation via submerged steel and floating pipeline in the Calcasieu Loop. The booster barge will be located in the northeast portion of the Loop, in approximate position 29-47.81N 093-19.72W. Submerged line will be located on the Monkey Island side of the channel along the top of slope. Sublines will cross the Calcasieu Loop Channel in two locations and will be properly marked. Additional on-scene vessels will include the T/Vs CHARLES J. CENAC, GYSGT HARRELL, Anchor Barge CALLEN 2104, Booster Barge 2109, Idler Barge CALLAN 2111, Crane Barge JOSEY A, Survey Vessel CONSTITUTION IV, and the Crew Boat LOWYN MARIE. Vessels are requested to avoid fishing or trawling within the area of the dredge pipeline, to avoid damage to nets, vessels, and project equipment. 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 82, POC: (630) 207-5196 Valid 2026-11-12 to 2026-12-12. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-2042BCSÉCURITÉGALVESTON BAY ENTRANCE CHANNEL - TEXAS CITY CHANNEL General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Texas City Channel - Monopile Operation --- --- Monopile driving operations will be conducted along the Texas City Channel near Docks 42 and 43. Two configurations will be utilized by the monopile operation project vessels. 1. When the materials barge is utilized, the configuration will extend to the middle of the channel and will restrict vessel transits to tows with a single barge only. 2. When the materials barge is not part of the configuration, tows with two barges may transit. U.S. Coast Guard Vessel Traffic Service Houston-Galveston will implement the following vessel traffic measures until further notice: • 7:00 a.m. - 10:00 a.m.: No ship traffic. Single barge tow transits only when materials barge is part of the monopile configuration. • 10:00 a.m. - 12:00 p.m.: Normal traffic pattern, no restrictions. • 12:00 p.m. - 4:00 p.m.: No ship traffic. Single barge tow transits only when materials barge is part of the monopile configuration. Tows are requested to coordinate at least 2-hours in advance to ensure the configuration of the operation can be determined to manage vessel transits. The M/V RUSSELL MARINE 1 will monitor VHF-FM Channels 13 and 87A, or can be contacted at (281) 979-4696 to coordinate towing vessel passing arrangements. Valid 2026-11-10 to 2026-11-13. Position 29-21.82N 094-53.52W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR NEW ORLEANS, EXCLUSIVE ECONOMIC ZONE (EEZ) ATON / ATON Changes Location: 28-29.18N 091-23.94W Aid Name: Energy XXI-101-14 LLNR: Not Provided Action: DISCONTINUE Platform; remove platform obstruction symbol. Platform removed and site cleared. Valid 2026-11-10 to 2026-11-23. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR NEW ORLEANS, EXCLUSIVE ECONOMIC ZONE (EEZ) ATON / ATON Changes Location: 28-50.37N 090-38.02W Aid Name: Talos-101-11 LLNR: Not Provided Action: DISCONTINUE Platform; remove platform obstruction symbol. Platform removed and site cleared. Valid 2026-11-10 to 2026-11-23. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR NEW ORLEANS, EXCLUSIVE ECONOMIC ZONE (EEZ) - SECTOR NEW ORLEANS, TERRITORIAL SEA ATON / ATON Changes Location: 29-06.95N 089-42.58W Aid Name: White Fleet-101-1 LLNR: Not Provided Action: DISCONTINUE Platform; remove platform obstruction symbol. Platform removed and site cleared. Valid 2026-11-10 to 2027-11-09. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR NEW ORLEANS, EXCLUSIVE ECONOMIC ZONE (EEZ) ATON / ATON Changes Location: 28-50.95N 090-38.43W Aid Name: Talos-101-10 LLNR: Not Provided Action: DISCONTINUE Platform; remove platform obstruction symbol. Platform removed and site cleared. Valid 2026-11-10 to 2026-11-23. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-F4FA11SÉCURITÉNEW ORLEANS HARBOR - NEW ORLEANS TO BATON ROUGE General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Mississippi River - Heavy Lift Operations --- --- Heavy lift operations will be conducted near Mile 184.0, LDB, AHOP. The operations will be conducted 24-hours a day, 7-days a week. Mariners are urged to proceed with caution. POC: (225) 331-5858 Valid 2026-11-09 to 2026-12-12. Position 30-11.18N 091-00.87W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- MOBILE CHANNEL - MOBILE RIVER General / LAA / RNA / Safety Zone Mobile River Channel - Safety Zone --- To: May 2030 --- The Captain of the Port (COTP) Mobile is enforcing a fixed Safety Zone in accordance with 33 CFR 165.T08-1214 surrounding the M/V EX ENTERPRISE as the vessel is moored at a receiving facility located on the Mobile River at 701 South Royal Street, Mobile, AL. This Safety Zone is necessary to protect personnel, vessels, and the marine environment from hazards associated with a dismantling operation, including removal of hazardous and regulated materials, and continuous work activity on and around the hull. All navigable waters of the Mobile River along the RDB will be designated as a fixed moored Safety Zone and will be bound by the following coordinates: 30-40.57N 088-02.27W, 30-40.57N 088-02.22W, 30-40.30N 088-02.08W, 30-40.32N 088-02.27W and north along the shoreline to the point of origin. The Safety Zone does not include waters within the Mobile River Federal Channel; therefore, no impact to commercial vessel traffic is anticipated. This zone will be enforced for the duration of dismantling operations, and remain in effect until the COTP determines the area no longer presents safety concerns. The dismantlement project is expected to progress to a safe stage approximately May 2030. In the event this fixed moored Safety Zone is no longer needed before May 2030, mariners will be notified through a Marine Safety Information Bulletin (MSIB) or other appropriate means. No person may enter or remain in the zone unless authorized by the COTP or a designated representative. Those in the Safety Zone must comply with all lawful orders or directions given to them by the COTP or the COTP’s designated representative. To seek permission to enter, mariners can contact the COTP or the COTP’s representative on VHF-FM Channel 16. Valid 2026-11-09 until further notice. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR CORPUS CHRISTI, SUBMERGED LAND ACT (SLA) - MATAGORDA SHIP CHANNEL ATON / ATON Changes Location: 28-38.96N 096-33.95W Aid Name: Matagorda Ship Channel E Range Front Light Passing Light LLNR: 27492 Action: DISCONTINUE Valid 2026-11-09 to 2026-11-19. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR CORPUS CHRISTI, SUBMERGED LAND ACT (SLA) - MATAGORDA SHIP CHANNEL ATON / ATON Changes Location: 28-38.96N 096-33.95W Aid Name: Matagorda Ship Channel E Range Front Light LLNR: 27490 Action: CHANGE Light Signal: Q R, 28ft (Night), Q R, 28ft (Day). Light List Structure Remarks: Skeleton tower on mud sills. Light List Remarks: Visible all around; higher intensity 1.5° each side of rangeline. Valid 2026-11-09 to 2026-11-19. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-1E4CD0PAN PANSECTOR MOBILE, TERRITORIAL SEA - SECTOR MOBILE, SUBMERGED LAND ACT (SLA) General / Naval Activity / Military Operations Gulf of America - U.S. Navy Operation --- --- The U.S. Navy will conduct diving and live fire operations in the Gulf of America near approximate position 30-05.29N 085-50.09W. Operations will be conducted 24-hours a day, 7-days a week. Mariners should maintain a 1-mile closest point of approach from the operating area and all naval support craft. VHF-FM Channels: 16, 81 and 82 Valid 2026-11-09 to 2026-11-20. Position 30-05.28N 085-50.10W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-2E4569SÉCURITÉMOBILE BAR - MOBILE CHANNEL General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Mobile Channel - Hazardous Platform Operations --- --- Hydrogen sulfide related construction work will be conducted at a platform in Mobile Bay along the Mobile Channel in approximate position 30-15.24N 088-03.13W. Shutdown valves will be replaced on the platform for a 20 inch departing gas pipeline. Vessels will be staged at the facility to deter fishing vessels from nearing within 500 ft of the platform. Work will take place 24-hours a day, 7-days a week. On-scene vessels will include the M/Vs GO FREEDOM, REBEL, BUNNY BORDELON, and GREATER SCOTT. Vessels should maintain a safe distance from the platform and transit the area with caution. VHF-FM Channel: 13 and 16 Valid 2026-11-09 to 2026-11-12. Position 30-15.23N 088-03.13W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- HOUSTON SHIP CHANNEL - SAN JACINTO RIVER ATON / ATON Changes Location: 29-47.67N 095-03.53W Aid Name: San Jacinto River Buoy 11 LLNR: 25585 Action: CHANGE Rename to: San Jacinto River Lighted Buoy 11 Action Type Change Light Signals Fl G 2.5s, 3nm, Green. Valid 2026-11-09 to 2026-11-19. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-FFC5F9SÉCURITÉNEW ORLEANS HARBOR - NEW ORLEANS TO BATON ROUGE General / Marine Construction (Excluding Bridges) / Boring and Core Samples Mississippi River - Core Sampling Operation --- --- Core sample drilling operations will be conducted by Eustis Engineering at Miles 118.0 to 119.0, RDB, AHOP. Work will take place 24-hours a day, 7-days a week. On-scene vessels will include the M/V G.I. JOE and the spud anchor barge ANNE FRANK. Mariners are requested to transit the area at their slowest safe speed to minimize wake, maintain a safe distance from the work area, and proceed with caution. VHF-FM Channels: 67 or 87A, POC: (504) 329-3710 Valid 2026-11-09 to 2026-11-15. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR MOBILE, EXCLUSIVE ECONOMIC ZONE (EEZ) - SECTOR MOBILE, TERRITORIAL SEA General / Autonomous Vessel Operations Gulf of America - Autonomous Surface Vessel Operation --- --- The 150 ft autonomous surface vessel (ASV) MARAUDER will conduct testing operations in the Gulf of America, in an area bound by approximate positions: 29-58.50N 088-46.20W, 29-58.50N 088-29.20W, 29-50.40N 088-29.20W and 29-50.40N 088-46.20W. Operations will take place 24-hours a day, 7-days a week. The ASVs will have a licensed crew onboard throughout testing. Additional on-scene vessels will include the M/V MR001 and MR002. Mariners are urged to maintain a wide berth from the operating vessel. VHF-FM Channels: 13 and 16, POC: (813) 748-7299 Valid 2026-11-09 to 2026-11-30. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-9B4887PAN PANSector New Orleans, Submerged Land Act (SLA) - Breton / Chandeleur Icw Alternate Route / Space Operations / Hazardous Warning Area / Commercial (Hazardous) Chandeleur Sound - Rocket Launching Activities --- --- Two suborbital rocket launching operations will be conducted off a vessel in Chandeleur Sound in approximate position 29-55.75N 089-03.77W. Operations will be weather dependent and will take place from 6:00 a.m. to 8:00 p.m. Two short-range rockets will be launched on separate days to demonstrate sea-based launch-pad capabilities. Each launch is expected to last several minutes from ignition through splashdown, with a maximum potential downrange distance of approximately 1,070 meters (0.6 nautical mile). On-scene vessels will include the M/V ONCE IN A LIFETIME and the F/V SOUTHERN CROSS. Mariners are requested to maintain a 500 yard closest point of approach from the operating area. VHF-FM Channel: 16, 18 and 72, POC: (228) 669-3644 Valid 2026-11-09 to 2026-11-24. Position 29-55.75N 089-03.77W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR CORPUS CHRISTI, SUBMERGED LAND ACT (SLA) - MATAGORDA SHIP CHANNEL ATON / ATON Changes Location: 28-39.70N 096-33.93W Aid Name: Matagorda Ship Channel E Range Rear Light LLNR: 27495 Action: CHANGE Light Signal: Oc R 4s, 66ft (Night), Oc R 4s, 66ft (Day). Light List Structure Remarks: Skeleton tower on mud sills. Light List Remarks: Visible 1° each side of rangeline. Valid 2026-11-09 to 2026-11-19. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-5693CCSÉCURITÉNEW ORLEANS HARBOR - NEW ORLEANS TO BATON ROUGE General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Mississippi River - Heavy Lift Operations --- --- Heavy lift operations will be conducted near Mile 188.0, LDB, AHOP. The operations will be conducted 24-hours a day, 7-days a week. Mariners are urged to proceed with caution. POC: (225) 331-5858 Valid 2026-11-09 to 2027-03-28. Position 30-12.97N 091-04.22W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-D0E66ESÉCURITÉSECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - CALCASIEU CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Calcasieu Channel – Calcasieu Loop – Dredge Operation --- --- The Dredge GENERAL ARNOLD will be conducting dredging along the Calcasieu Channel in the southern end of the Calcasieu Loop. The dredge will set up along the green side of the channel, swinging across the channel on anchors that will be set outside of the channel on either side. The Booster Barge CAL 2109 will be connected to the dredge operation via pipeline and will be located in the northeast portion of the Calcasieu Loop in approximate position 29-47.81N 093-19.72W. A combination of submerged steel pipeline and floating rubber hose will connect the dredge to the shore pipe. Submerged steel subline will be placed behind the dredge along the channel toe to extend the dredge’s reach. Additional on-scene vessels will include the T/Vs CHARLES J. CENAC, GYSGT BASILONE, Anchor Barge CALLEN 2104, Booster Barge 2109, and the Crew Boat LOWYN MARIE. Vessels are requested to avoid fishing or trawling within the area of the dredge pipeline, to avoid damage to nets, vessels, and project equipment. 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 82, POC: (630) 207-5196 Valid 2026-11-06 to 2026-11-12. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - CALCASIEU CHANNEL ATON / ATON Changes Location: 29-33.43N 093-28.31W Aid Name: Energy Xxi-112-5 LLNR: Not Provided Action: DISCONTINUE Platform: Remove platform obstruction symbol. Platform removed and site cleared. Valid 2026-11-05 to 2026-11-18. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR NEW ORLEANS, TERRITORIAL SEA - SECTOR NEW ORLEANS, SUBMERGED LAND ACT (SLA) ATON / ATON Changes Location: 29-23.77N 091-45.62W Aid Name: CONTANGO-200-10 LLNR: Not Provided Action: DISCONTINUE Platform; remove platform obstruction symbol. Platform removed and site cleared. Valid 2026-11-05 to 2026-11-19. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR NEW ORLEANS, TERRITORIAL SEA - SECTOR NEW ORLEANS, SUBMERGED LAND ACT (SLA) ATON / ATON Changes Location: 29-23.57N 091-45.84W Aid Name: Contango-200-5 LLNR: Not Provided Action: DISCONTINUE Platform; remove platform obstruction symbol. Platform removed and site cleared. Valid 2026-11-05 to 2026-11-18. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR MOBILE, SUBMERGED LAND ACT (SLA) - EAST BAY TO WEST BAY General / Naval Activity / Naval Testing (Surface / Underwater) Saint Andrew Bay - West Bay - U.S. Navy Operation --- --- The U.S. Navy will conduct surface and subsurface unmanned vehicle testing operations north of the Hathaway Bridge in Saint Andrew Bay near approximate position 30-11.72N 085-44.01W. Testing will take place Monday through Friday, from 8:00 a.m. to 3:00 p.m. Naval support craft will be on-scene during tests. Mariners are requested to avoid the area, be on the lookout for low profile crafts, and take all direction from U.S. Naval support vessels. VHF-FM Channel: 16 Valid 2026-11-05 to 2026-12-01. Position 30-11.72N 085-44.02W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-5C0122SÉCURITÉGALVESTON BAY ENTRANCE CHANNEL - HOUSTON SHIP CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Houston Ship Channel - Dredge Operation --- --- The Dredge MBI-08 will be conducting dredging operations at the BOSTCO Kinder Morgan Terminal along the Houston Ship Channel. Hopper barges will be loaded at the worksite and transported to an unloader barge located at a placement area along the Houston Ship Channel. Additional on-scene vessels will include hopper barges and the T/Vs GRAND ANN, JACKSON FOSTER, LILY C., CHUCK BOONE and TOWNES JEFFERY. Vessels are urged to transit the area with caution and coordinate passing arrangements 30-minutes in advance. VHF-FM Channel: 76 and 78, POC: (228) 213-0600 Valid 2026-11-05 to 2026-11-26. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR MOBILE, TERRITORIAL SEA - SECTOR MOBILE, SUBMERGED LAND ACT (SLA) General / Naval Activity / Naval Testing (Surface / Underwater) Gulf of America - U.S. Navy Operation --- --- The U.S. Navy will conduct surface and subsurface unmanned vehicle testing operations in the Gulf of America near approximate position 30-03.16N 085-41.21W. Testing will take place Monday through Friday, from 8:00 a.m. to 3:00 p.m. Naval support craft will be on-scene during tests. Mariners are requested to avoid the area, be on the lookout for low profile crafts, and take all direction from U.S. Naval support vessels. VHF-FM Channel: 16 Valid 2026-11-05 to 2026-12-01. Position 30-03.15N 085-41.22W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR HOUSTON-GALVESTON, EXCLUSIVE ECONOMIC ZONE (EEZ) ATON / ATON Changes Location: 28-17.46N 094-05.37W Aid Name: White Fleet-104-1 LLNR: Not Provided Action: DISCONTINUE Platform; remove platform obstruction symbol. Platform removed and site cleared. Valid 2026-11-05 to 2026-11-18. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - SABINE BANK CHANNEL ATON / ATON Changes Location: 29-11.36N 094-01.68W Aid Name: Energy Xxi-106-10 LLNR: Not Provided Action: DISCONTINUE Platform: Remove platform obstruction symbol. Platform removed and site cleared. Valid 2026-11-05 to 2026-11-18. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - SABINE BANK CHANNEL ATON / ATON Changes Location: 29-11.05N 094-02.90W Aid Name: Energy Xxi-106-9 LLNR: Not Provided Action: DISCONTINUE Platform: Remove platform obstruction symbol. Platform removed and site cleared. Valid 2026-11-05 to 2026-11-18. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - SABINE BANK CHANNEL ATON / ATON Changes Location: 29-11.74N 094-02.25W Aid Name: Energy Xxi-106-8 LLNR: Not Provided Action: DISCONTINUE Platform: Remove platform obstruction symbol. Platform removed and site cleared. Valid 2026-11-05 to 2026-11-18. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-682554SÉCURITÉSECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - SABINE PASS General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Sabine Pass - Dive Operation --- To: Until Further Notice --- The M/Vs AB 113, SIMPLE MAN and TEX B TREGRE are conducting dive operations in Sabine Pass between Sabine Pass Lighted Buoy 22 (LLNR-22500) and Sabine Pass Lighted Buoy 17 (LLNR-22470). Additional on-scene vessels may include the Dredge DODGE ISLAND, Survey Vessels JONATHAN WOODWARD, LADY BECKY, FM BROWN, and OHIO RIVER. Mariners are urged to transit the area with caution after passing arrangements have been made. VHF-FM Channel: 16 Valid 2026-11-05 until further notice. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-340FE5SÉCURITÉMOBILE BAR - MOBILE CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Mobile Channel - Dredge Operation --- To: Until Further Notice --- The Dredge GLENN EDWARDS will conduct maintenance dredging operations in the Mobile Channel in lower Mobile Bay. Operations will be conducted 24-hours a day, 7-days a week. The dredge will place dredged material into the Ocean Dredge Material Disposal Site (ODMDS) located south of Dauphin Island, AL. Mariners are urged to transit the area 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: (251) 957-6019 Valid 2026-11-04 until further notice. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR NEW ORLEANS, TERRITORIAL SEA - SECTOR NEW ORLEANS, SUBMERGED LAND ACT (SLA) General / Hazards To Navigation / Wrecks Gulf of America - Grand Isle - Aground P/C --- Reported: 2026-11-02 --- A 17-19ft P/C has been reported aground, in approximate position 29-13.05N 090-01.08W, on November 2, 2026. The aground P/C is reportedly not marked. Mariners are urged to avoid this area. Position 29-13.05N 090-01.08W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-A27262SÉCURITÉSECTOR CORPUS CHRISTI, SUBMERGED LAND ACT (SLA) - BRAZOS SANTIAGO PASS General / Marine Construction (Excluding Bridges) / Dredging Brazos Santiago Entrance Channel – Dredge Operation --- --- The Dredge GLENN EDWARDS will be working in the Brazos Santiago Entrance Channel, pumping spoils to the discharge site along the beach at Andy Bowie Park on South Padre Island. Operations will be conducted 24-hours a day, 7-days a week. Waterside staging areas for vessels, equipment, and pipeline, will be located in the Port Isabel turning basin and Barracuda Cove. On-scene vessels will include the M/V MAMCY M, Crew Boat COLONEL, and T/Vs CAPT CJ, JACK K, and CAPT BOUDREAUX. Mariners are urged to transit near the dredge at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. VHF-FM Channels: 13, 16, 66 and 67 Valid 2026-11-13 to 2026-11-30. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026