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 6 of 6
- LNM08G-9546C3SÉCURITÉGALVESTON BAY ENTRANCE CHANNEL - HOUSTON SHIP CHANNEL General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Point Bolivar - Houston Ship Channel - Demolition Operation --- --- Demolition activities will be conducted near the Bolivar Ferry Landing on a nearby derelict steel dry dock. Work will take place during daylight hours only from 7:00 a.m. to 6:00 p.m., daily. On-scene equipment and crews will include two material barges and the Spud Barge EMERGE IV. Periodic dive operations will take place near the demolition site. Mariners are urged to transit the area at their slowest safe speed to minimize wake. VHF-FM Channels: 11 and 16, POC: (727) 361-4019 Valid 2026-07-10 to 2026-12-20. Position 29-21.92N 094-47.00W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-2CE6B5SÉCURITÉHOUSTON SHIP CHANNEL - CEDAR BAYOU CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Cedar Bayou Channel - Marine Construction --- --- The Dredge GENERAL EISENHOWER will be digging two floatation access channels from the Cedar Bayou Channel to the berm construction and shore protection sites near Atkinson Island. Work will take place 24-hours a day, 7-days a week. Pile driving, dredging, and offloading will be conducted throughout the project area. The dredge will pump discharged material inside the berm perimeter. A temporary sheet pile wall will be installed in the first floatation access point to provide equipment access for shore protection work at the berm. Additional on-scene vessels will include the Anchor Barge CAL2002, T/Vs IWO JIMA and CORREGIDOR, a 140 ft x 40 ft crane barge, two standard excavators, a long reach excavator, material barges, and bulldozers. Barges and equipment will be staged within the project limits. Mariners are urged to transit the area with caution and at their slowest safe speed to minimize wake. VHF-FM Channels: 11, 13 and 16, POC: (307) 256-2558 or (850) 714-4311 Valid 2026-06-26 to 2026-12-31. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-24E373SÉCURITÉVIA MISSISSIPPI RIVER AND HARVEY CANAL - ALGIERS ALTERNATE ROUTE General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Algiers Canal – GIWW – Lock Precautions --- To: Until Further Notice --- Mariners are to avoid making contact with the canal end long guidewall at Algiers Lock, due to deteriorating timbers and wall instability. Additionally, Algiers Lock is experiencing surges in the lock chamber due to the low water in the Mississippi River and the Algiers Canal. Tows are to navigate with extreme caution while entering and exiting the lock and at slow safe speeds to avoid the canal long guidewall area entirely. If mariners experience a surge, it is recommended that they back out slowly while maintaining control to allow the surge to settle. For up-to-date information, the Lockmaster at Algiers Lock can be reached at (504) 354-1795 or the Lockwall can be contacted at (504) 354-1861. Valid 2026-06-23 until further notice. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) General / Autonomous Vessel Operations Gulf of America - Unmanned Surface Vessel Testing --- To: Until Further Notice --- Unmanned surface vessel (USV) tests will be conducted in the Gulf of America, in an area bound by approximate positions: 29-25.49N 094-21.50W, 29-23.39N 094-26.71W, 29-27.84N 094-29.32W and 29-29.94N 094-24.11W. USV operations will take place Monday through Friday, from 8:00 a.m. to 6:00 p.m. Mariners are requested to contact the on-scene support vessel SARONIC RANGER to coordinate transits in the USV operating area. VHF-FM Channel: 16 Valid 2026-06-16 until further notice. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-FB0151SÉCURITÉTHE RIGOLETS - LAKES PONTCHARTRAIN AND MAUREPAS General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Lake Pontchartrain - Fishing Pier Repairs --- --- The M/V CAPTAIN BUDDY and a barge will be working on Lake Pontchartrain in the vicinity of the Sunset Point Fishing Piers, located in approximate positions 30-21.60N 090-05.40W and 30-21.64N 090-05.17W. Operations will take place from 7:00 a.m. to 4:00 p.m., Monday through Friday. Mariners are urged to transit the project area with caution. VHF-FM Channel: 16, POC: (504) 952-0394 Valid 2026-06-16 to 2027-01-01. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) General / Autonomous Vessel Operations Gulf of America - Unmanned Surface Vessel Testing --- To: Until Further Notice --- Unmanned surface vessel (USV) tests will be conducted in the Gulf of America, in an area bound by approximate positions: 29-25.35N 094-36.16W, 29-25.33N 094-31.59W, 29-22.25N 094-33.00W and 29-22.23N 094-37.55W. USV operations will take place Monday through Friday, from 8:00 a.m. to 6:00 p.m. Mariners are requested to contact the on-scene support vessel SARONIC RANGER to coordinate transits in the USV operating area. VHF-FM Channel: 16 Valid 2026-06-16 until further notice. 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 / Obstructions Gulf of America - Platform Removal and Buoy Deployment --- --- Three platforms have been removed from the Gulf of America, South Pass Area, Block 60. The subsea sites where the platforms previously existed may have debris piles in the area. A buoy has been deployed in approximate position 29-03.17N 088-58.34W, to mark the area with suspected remaining debris. Trawling vessels should avoid the area until further notice. Mariners are urged to maintain a wide berth from the buoy and previous platform sites until the project is complete. Valid 2026-06-15 to 2027-03-30. Position 29-03.17N 088-58.35W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-8FA83ASÉCURITÉSECTOR CORPUS CHRISTI, SUBMERGED LAND ACT (SLA) - MATAGORDA SHIP CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Matagorda Ship Channel - Dredge Operation --- --- The Dredge EMIL KURTZ will dredge in the Matagorda Ship Channel between Matagorda Ship Channel Light 19 (LLNR-27205) and the Matagorda Ship Channel Point Comfort Turning Basin. Dredging operations will start in the northern portion of the channel and work in a southerly direction. Work will be conducted 24-hours a day, 7-days a week. Additional on-scene vessels will include M/Vs BRUCE M., ELENA LAQUAY, KETTIE JO, BA-24, and BA-21, one supply barge, and a fuel barge. The dredge requests 2-hours advance notice for passing arrangements. Mariners are urged to transit at their slowest safe speed to minimize wake and procced with caution after passing arrangements have been made. VHF-FM Channels: 16 and 79, POC: (361) 487-6471 Valid 2026-06-15 to 2026-12-01. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-E2BCC0SÉCURITÉGALVESTON BAY ENTRANCE CHANNEL - HOUSTON SHIP CHANNEL General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Houston Ship Channel - Dock Construction --- To: January 2027 --- Construction for a new barge dock will take place along the Houston Ship Channel near Houston Ship Channel Lighted Buoy 145 (LLNR-25785.01). Operations will be conducted 10-hours a day, 5-days a week. On-scene vessels will include two 150 ft x 60 ft crane barges, two material barges, four towing vessels, and a work raft. Mariners are urged to transit the area with caution. VHF-FM Channel: 16 Valid 2026-06-03 until further notice. Position 29-44.07N 095-08.47W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-AF6BB8SÉCURITÉSABINE-NECHES CANAL - NECHES RIVER General / Marine Construction (Excluding Bridges) / Dredging Neches River - Sabine Neches Canal - GIWW - Dredge Operation --- To: June 2028 --- The Dredges GENERAL MACARTHUR, GENERAL BRADLEY and GENERAL MARSHALL are conducting dredging operations in the Neches River. Work will take place 24-hours a day, 7-days a week. Additional on-scene vessels will include an idler barge, three anchor barges, a material barge, a crane barge, a spill barge, the Survey Vessel CONSTITUITION V, the Crew Boats DC3 BRUCKENTHAL and SMI MUNRO, and the T/Vs SGT. HARRELL, MISS SYDNEY, LIL EMI, DOUGLAS B, GUAM, CORAL SEA and SARATOGA. Advance notification timelines for ship traffic in the area is 2-hours prior to transiting, 1-hour prior to transiting, and again at 30-minutes prior to transiting the area. Advance notification timelines for tow traffic in the area is 1-hour prior to transiting and again at 30-minutes prior to transiting the area. Mariners are urged to exercise extreme caution within the work area and should transit at their slowest safe speed to minimize wake. VHF-FM Channels: 13, 16 and 82, POC: (848) 333-2694 Valid 2026-06-01 until further notice. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-8446DCSÉCURITÉPORT ARTHUR CANAL - SABINE-NECHES CANAL General / Marine Construction (Excluding Bridges) / Dredging Sabine Neches Canal - GIWW - Taylor Bayou - Port Arthur Canal - Dredge Operation --- To: June 2028 --- The Dredges GENERAL MACARTHUR, GENERAL BRADLEY and GENERAL MARSHALL will conduct dredging in the Sabine-Neches Waterway, Port Arthur Canal, and Taylor Bayou. Work will take place 24-hours a day, 7-days a week. Additional on-scene vessels will include an idler barge, three anchor barges, a material barge, a crane barge, a spill barge, the Survey Vessel CONSTITUITION V, the Crew Boats DC3 BRUCKENTHAL and SMI MUNRO, and the T/Vs SGT. HARRELL, MISS SYDNEY, LIL EMI, DOUGLAS B, GUAM, CORAL SEA and SARATOGA. Advance notification timelines for ship traffic in the area is 2-hours prior to transiting, 1-hour prior to transiting, and again at 30-minutes prior to transiting the area. Advance notification timelines for tow traffic in the area is 1-hour prior to transiting and again at 30-minutes prior to transiting the area. Mariners are urged to exercise extreme caution within the work area and should transit at their slowest safe speed to minimize wake. VHF-FM Channels: 13, 16 and 82, POC: (848) 333-2694 Valid 2026-06-01 until further notice. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-B58F18SÉCURITÉSECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - CALCASIEU CHANNEL General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Calcasieu Channel - Material Offloading --- --- Material offloading will be conducted along the Calcasieu Channel in the vicinity of Mile 23.0, RDB. Work will take place Monday through Saturday, during daylight hours. On-scene vessels will include the T/V REPENTANCE, deck barges, and hopper barges. Mariners are requested to transit the area at their slowest safe speed to minimize wake or wash, and proceed with caution between Miles 22.0 and 23.0 due to LA-LNG marine construction activities. VHF-FM Channels: 16 and 88, POC: (337) 512-4074 or (832) 621-9655 Valid 2026-06-01 to 2027-06-30. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-29A0F9SÉCURITÉMATAGORDA SHIP CHANNEL - PORT LAVACA CHANNEL General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Lavaca Bay - Port Lavaca - Shoreline Protection Construction --- --- Construction of living shoreline protection consisting of rock breakwaters, reef breakwaters, two marsh creation islands, and the installation of seven private aids to navigation will be conducted in Lavaca Bay, near approximate position 28-37.26N 096-37.32W. Operations will be conducted daily, during daylight hours. On-scene vessels will include two crew boats and a towing vessel. Mariners are requested to transit the area at their slowest safe speed to minimize wake. VHF-FM Channel: 10, POC: (985) 992-6827 Valid 2026-05-28 to 2026-11-30. Position 28-37.25N 096-37.32W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-4D4C1DSÉCURITÉTRINITY BAY - DOUBLE BAYOU CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Double Bayou Channel - Dredge Operation --- --- Maintenance dredging will be conducted throughout the Double Bayou Channel. Work will take place from 6:00 a.m. to 6:00 p.m., daily. Dredged material will be transported via floating and submerged pipeline and placed into open water placement areas along the channel. Project pipeline and dredging equipment may be staged near Oak Island. On-scene vessels will include the T/Vs TINA L, SANDRA G and NACOLE, and the Crew Boats BO33, BO15 and BO32. 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: 8 and 16, POC: (972) 800-3395 Valid 2026-05-22 to 2026-11-11. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- GALVESTON BAY - GALVESTON CHANNEL General / MSIB Galveston Channel - VTS Operating Restrictions --- To: Until Further Notice --- U.S. Coast Guard Vessel Traffic Service Houston-Galveston Directs the following for barge operations to and from fixed and temporary facilities west of a line drawn from Texas A and M Galveston at 29-18.73N 094-48.92W, to Gulf Sulphur Services at 29-18.53N 094-49.10W: 1.) No arrivals/departures with strung out barges. 2.) Operations must keep in line with the Lone Star Harbor Safety Committee, Texas International Terminal Industry Best Guidance. 3.) Lead vessels and assist vessels must be a minimum of 1200 hp each when pushing loaded or empty standard barges approximately 200 ft x 35 ft and larger. 4.) FLOOD CURRENT – DAY and NIGHT: a. Assist vessel is required for all configurations. b. No transits permitted when flood current is greater than 1.0 kt. -- Vessels will be asked to confirm they can comply with these restrictions upon check-in. Valid 2026-05-18 until further notice. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-90B17ESÉCURITÉNEW ORLEANS HARBOR - NEW ORLEANS TO BATON ROUGE General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Mississippi River - Material Offloading --- --- Material offloading will be conducted along the Mississippi River, RDB, near Claiborne Landing, Mile 188.0, AHOP. Work will take place 24-hours a day, 7-days a week. On-scene vessels will include hopper barges, towing vessels and a crane spud barge. Mariners are requested to transit the area at their slowest safe speed to minimize wake. POC: (337) 772-8945 or (337) 323-9373 Valid 2026-05-08 to 2026-11-30. Position 30-12.38N 091-04.27W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-073142SÉCURITÉSECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - SABINE BANK CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Sabine Bank Channel - Drag Operation --- To: Until Further Notice --- The M/Vs ANNAMARIA ROSE and PAPPYS PRIDE are conducting trawling/drag operations near the Sabine Bank Channel entrance, south of Sabine Bank Channel Lighted Buoy SB (LLNR-1085). Additional on-scene vessels include the Dredge GALVESTON ISLAND, the Dredge ELLIS ISLAND, and the 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 2026-04-24 until further notice. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-EA1F71SÉCURITÉSECTOR MOBILE, SUBMERGED LAND ACT (SLA) - MISSISSIPPI SOUND General / Marine Construction (Excluding Bridges) / Dredging Mississippi Sound - Dredge Operation --- --- Dredging operations will be conducted from Deer Island to Henderson Point in the Mississippi Sound and adjacent navigation channels. Work will take place 24-hours a day, 7-days a week. On-scene vessels and equipment will include the Dredge CREW COMPASS, barges, pipeline, and support craft. Operations may restrict navigation due to the presence of floating and submerged pipelines, anchor wires, and limited maneuverability of the dredging equipment. Vessels are requested to transit the area at their slowest safe speed and proceed with caution after passing arrangements have been made. VHF-FM Channels: 13 and 16, POC: (904) 334-0893 Valid 2026-03-30 to 2027-05-24. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-FA4DBDSÉCURITÉPENSACOLA BAY - PENSACOLA-MOBILE General / Marine Construction (Excluding Bridges) / Dredging GIWW - Marina Construction and Dredging --- --- A 43-slip marina will be constructed outside of the GIWW Channel, near Mile 159.0, EHL, in approximate position 30-17.89N 087-37.73W. Work will be conducted from 7:00 a.m. to 4:30 p.m., Monday through Saturday. Dredging from the GIWW Channel into the marina area will take place within the first 30-days of the project. All other marina construction will be conducted for the remainder of the project timeline. On-scene vessels will include a barge mounted dredge, towing vessels, and construction equipment. Mariners are urged to transit the area at their slowest safe speed to minimize wake and proceed with caution. POC: (251) 689-8656 Valid 2026-03-16 to 2027-03-15. Position 30-17.88N 087-37.73W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-950B67SÉCURITÉSECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - CALCASIEU CHANNEL General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Calcasieu Channel - Material Offloading --- --- Material offloading will be conducted along the west side of the Calcasieu Channel near Mile 0.3. On-scene vessels will include hopper barges and towing vessels. Mariners are urged to transit the area with caution and at their slowest safe speed to minimize wake. POC: (337) 247-1071 or (337) 519-1163 Valid 2026-03-15 to 2027-03-15. Position 29-46.33N 093-20.82W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-FB0273SÉCURITÉSECTOR NEW ORLEANS, TERRITORIAL SEA - SECTOR NEW ORLEANS, SUBMERGED LAND ACT (SLA) General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Schooner Bayou Control Structure - Transit Instructions --- --- From 6:00 a.m. until 6:00 p.m., each day, mariners are urged to take extra precautions when locking through the Schooner Bayou Control Structure, due to a contractor removing existing and installing new timber guidewalls. All vessels should contact the Schooner Bayou Control Structure on VHF-FM Channel 14 to make arrangements on which side of the channel to navigate when locking through the structure. Leland Bowman Lock can be used as an alternate route. For up-to-date information, the Lockmaster can be reached at (337) 737-2470 or (337) 316-3662. Valid 2026-03-06 to 2026-11-30. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-11D9B1SÉCURITÉSECTOR MOBILE, SUBMERGED LAND ACT (SLA) - PENSACOLA BAY General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Pensacola Bay - Pier Demolition and Construction --- --- The demolition and reconstruction of the Pensacola Bay Bridge Fishing Pier will be conducted in Pensacola Bay. Operations will take place from 7:00 a.m. to 7:00 p.m., daily. Work will consist of the complete demolition of the existing pier structure, include pile cutting and removal, and the rebuilding of the fishing pier. On-scene vessels and equipment will include crane barges, pile driving equipment, towing vessels, and other support craft. Mariners are urged to use caution when transiting near the construction area and should maintain a safe distance from construction equipment and vessels. Valid 2026-03-05 to 2027-01-01. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-DB7E80SÉCURITÉGALVESTON BAY - GALVESTON CHANNEL General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Galveston Channel - Marine Construction and Dredging --- --- Dredging and marine construction will take place at Texas A and M University at Galveston (TAMU-G) Dock No. 1, in the Galveston Harbor along the Galveston Channel. Work will be conducted 10-hours a day, Monday through Saturday, unless otherwise directed. Operations will include dredging, the rehabilitation of approximately 300 ft of the main bulkhead and approximately 400 ft of return wall, and the construction of approximately 350 ft of a new concrete pier deck. On-scene vessels will include approximately two crane barges, material barges, the T/V EVERLINE and an additional towing vessel, and ancillary support craft. Dive operations may take place intermittently throughout the project. Mariners are urged to transit the area at a safe distance and at their slowest safe speed, observe all day shapes and dive flags, and monitor bridge-to-bridge communications. VHF-FM Channels: 05A and 12, POC: (346) 617-8019 or (832) 996-7135 Valid 2026-02-26 to 2027-04-30. Position 29-18.72N 094-48.95W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-AF845ASÉCURITÉSECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - SABINE PASS General / Marine Construction (Excluding Bridges) / Dredging Sabine Bank Channel - Sabine Pass - Dredge Operation --- --- 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 located west of the channel. On-scene vessels include the Dredges PADRE ISLAND and GALVESTON ISLAND, the Survey Vessels JONATHAN WOODWARD, LADY BECKY, FM BROWN, and OHIO RIVER, the Trawling Vessels MR. TOMMY, SIMPLE MAN, PAPPYS PRIDE, JESSICA MARIE, and ANNAMARIA ROSE, and the M/V PAMLICO SOUND. Currently, the dredges are working in the following locations: • GALVESTON ISLAND and ELLIS ISLAND: Past Sabine Bank Channel Lighted Buoy SB (LLNR-1085). • PADRE ISLAND: Between Sabine Bank Channel Lighted Buoy 7 (LLNR-22335) and Sabine Bank Channel Lighted Buoy 12 (LLNR-22355). • AMELIA ISLAND: Between Sabine Bank Channel Lighted Buoy 21 (LLNR-22380) and Sabine Bank Channel Lighted Buoy 26 (LLNR-22395). • DODGE ISLAND: Between Sabine Pass Lighted Buoy 17 (LLNR-22470) and Sabine Pass Lighted Buoy 22 (LLNR-22500). 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 Valid 2026-02-09 to 2027-04-03. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) General / Autonomous Vessel Operations Gulf of America - Unmanned Surface Vessel Testing --- To: Until Further Notice --- Unmanned surface vessel (USV) tests will be conducted in the Gulf of America, in an area bound by approximate positions: 29-25.35N 094-36.16W, 29-25.33N 094-31.59W, 29-22.25N 094-33.00W and 29-22.23N 094-37.55W. USV operations will take place Monday through Friday, from 8:00 a.m. to 6:00 p.m. Mariners are requested to contact the on-scene support vessel SARONIC RANGER to coordinate transits in the USV operating area. VHF-FM Channel: 16 Valid 2026-02-04 until further notice. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-67E5BCSÉCURITÉSECTOR CORPUS CHRISTI, SUBMERGED LAND ACT (SLA) - PORT MANSFIELD CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Port Mansfield Channel - Dredge Operation --- --- The Dredges GENERAL BRADLEY and GENERAL MARSHALL will conduct dredging operations in the Port Mansfield Channel, from just east of the jetties, through the entire inland portion of the Port Mansfield Channel, and into the Port Mansfield Harbor. The Dredge GENERAL MARSHALL will start working near Port Mansfield Channel Daybeacon 18 (LLNR-29360) with anchors set on either side of the channel. A combination of steel and HDPE pipeline will be used with floating rubber hose, floating pipe, submerged pipe and shore pipe leading to the placement areas at Bird Island and along the Padre Island Beach. Submerged pipelines will be placed across the channel in locations that provides sufficient depth and will be marked with lights and buoys. No fishing or trawling activities should take place along or within the area of pipeline, to avoid damage to nets, vessels, and the dredge equipment. Mariners are requested to coordinate passing arrangements 1-hour in advance and transit the area with extreme caution. VHF-FM Channels: 13 and 79, POC: Dredge (409) 739-6508 Valid 2026-01-19 to 2027-02-11. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-681EF2SÉCURITÉBLACK WARRIOR RIVER General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Black Warrior River, Mile 347.0 - Modified Lock Schedule --- --- The Holt Lock will be periodically closed and operate under a modified schedule to perform repairs on a damaged lock monolith. The tentative remaining lock operating schedule to accommodate repairs and major activities are as follows: • November 2, 2026 through December 18, 2026: Closed to navigation, from 6:00 a.m., Mondays, to 6:00 a.m., Saturdays. Open to navigation, from 6:00 a.m., Saturdays, to 6:00 a.m., Mondays. Waterway user calls will be held throughout the repair process to update stakeholders. For further information regarding this work, mariners can contact Holt Lock at (251) 276-3293. For additional details regarding the waterway users calls, mariners can access USACE Navigation Bulletins at: https://ndc.ops.usace.army.mil/ords/f?p=107:1 Valid 2026-01-12 to 2026-12-18. Position 33-15.17N 087-26.95W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-FD8B14SÉCURITÉNEW ORLEANS HARBOR - NEW ORLEANS TO BATON ROUGE General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Mississippi River - Pump Station Construction --- --- Pump station construction will be conducted along the Mississippi River across from Darrow Fleet, Mile 175.5, RDB, AHOP, Smoke Bend Crossing. Work will be conducted from 6:30 a.m. to 5:00 p.m., 6-days a week. Operations will include pile driving, excavation, and pipe installation. On-scene vessels will include multiple crane barges, a material barge, a towing vessel, and a crew boat. Mariners are requested to transit the area at a slow bell so as not to interfere with ongoing construction and proceed with caution. VHF-FM Channel: 67 Valid 2025-11-28 to 2026-12-13. Position 30-06.55N 090-59.38W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-615F89SÉCURITÉGeneral / Marine Construction (Excluding Bridges) / Dredging GIWW - Devils Elbow - Staging Area --- --- A staging area for dredge pipe and equipment will be located along the GIWW, Mile 240.7, WHL. All pipe will be marked with buoys and lights. Mariners are urged to use caution in the area and transit at their slowest safe speed to minimize wake after passing arrangements have been made. Valid 2025-11-24 to 2027-02-15. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-119B2ESÉCURITÉGeneral / Marine Construction (Excluding Bridges) / Dredging Calcasieu Channel - Calcasieu Loop - Dredge Operation Booster Location --- --- The Double Barrel Booster 2109 will be staged in the Calcasieu Loop for the duration of the Monkey Island Dredge Project, in approximate position 29-47.82N 093-19.73W. Mariners are urged to transit the area at their slowest safe speed to minimize wake. VHF-FM Channel: 13, POC: (630) 207-5196 Valid 2025-10-21 to 2027-02-25. Position 29-47.82N 093-19.73W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-F2EB35SÉCURITÉSECTOR MOBILE, SUBMERGED LAND ACT (SLA) - BAYOU LA BATRE General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Bayou La Batre - Dock Construction --- --- Marine construction will be taking place along Bayou La Batre at the Bayou La Batre City Docks. Demolition and the new construction of a boat launch, marina and fishing vessel pier will be taking place in the area. Work will be conducted Monday through Friday, from 6:00 a.m. to 6:00 p.m. The main channel will not be obstructed during construction operations. The boat launch basin will be closed to marine traffic during some phases of construction and may be blocked by booms/turbidity controls. Mariners are urged to transit the area with caution. VHF-FM Channels: 9 and 16 Valid 2025-09-15 to 2027-09-15. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR MOBILE, SUBMERGED LAND ACT (SLA) - EAST BAY TO WEST BAY General / Bridges / Construction GIWW - East Bay - Bridge Construction and Demolition --- --- The DuPont (SR30/US HWY 98) Bridge crossing the GIWW at Mile 295.5, EHL, will undergo construction and demolition. Work will include the construction of two new parallel bridges, the installation of work trestles, temporary and permanent driven piles, barge mooring piles, sheet pile wave breaks, waterline footers, and bridge sub and super structures. The existing bridge will be demolished and will include the removal of temporary shoring and concrete cutting. Operations will be conducted from 6:00 a.m. to 6:00 p.m., six days a week. On-scene vessels will include the T/Vs MISS VERA ELLEN II, KEITH JACOBSON and MISS AMORY, three 24 ft skiffs, a crew boat, the Ringer Barges CB110 7000, CB120 4100 and SBC 4100, four crane barges, two sectional crane barges, six material barges, and four deck barges (MCC 904, 903, 453 and 479). Vessels are urged to transit at their slowest safe speed to minimize wake and proceed with extreme caution after passing arrangements have been made. VHF-FM Channel: 16, POC: (334) 740-0569 Valid 2025-09-10 to 2029-07-13. Position 30-06.28N 085-36.48W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-4D7971SÉCURITÉSECTOR MOBILE, SUBMERGED LAND ACT (SLA) - EAST BAY TO WEST BAY General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes GIWW - East Bay - Temporary Pile Installation --- --- Temporary mooring piles will be installed in the area in support of the Dupont Bridge construction project. The piles will be lit and utilized throughout the project. VHF-FM Channel: 16, POC: (334) 740-0569 Valid 2025-09-10 to 2029-07-13. 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 operate an unmanned surface vehicle (USV) towing underwater equipment in the Gulf of America, in the offshore waters of Panama City Beach, FL. The operating area will be bound by approximate positions: 30-07.98N 085-55.33W, 30-07.98N 085-50.71W, 30-03.94N 085-50.71W and 30-03.94N 085-55.32W. Two U.S. Naval support vessels will be on-scene during the USV operation. Mariners should maintain a wide berth from all U.S. Naval craft and are requested to avoid the area. VHF-FM Channel: 16 Valid 2025-09-03 to 2027-01-31. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- GALVESTON BAY ENTRANCE CHANNEL - HOUSTON SHIP CHANNEL General / Bridges / Construction Houston Ship Channel - Bridge Construction --- To: June 2027 --- The Harris County Toll Road Authority (HCTRA) and a contractor are conducting over-the-water construction of the new Beltway 8 (Sam Houston Tollway Ship Channel Bridge) over the Houston Ship Channel. Overhead construction on areas outside the navigable channel are in progress. The U.S. Coast Guard Captain of the Port Houston-Galveston has established Safety Zones for the waters outside the federal channel surrounding the existing pillars. Vessels transiting this area are directed to utilize the marked federal channel and should remain clear of transiting beneath the overhead work. Channel closures to support work over the federal channel are expected to commence near the end of December 2026. Overnight closures, likely in the 8 to 10 hour range, every other night for a week will be needed. Following a round of overnight closures, the U.S. Coast Guard VTS will schedule 2-3 hour blocks of no traffic in daylight hours to allow for deck placement. A pattern of these closures are expected to continue for 4-5 months. Additional planning meetings focused on minimizing disruptions will be held with Port Partners as the closure dates approach. Mariners are urged to transit this area with extreme caution and check updated notices regarding closures prior to transiting the area. Valid 2025-07-24 until further notice. Position 29-44.17N 095-08.75W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-1F9F06SÉCURITÉCAT ISLAND PASS - HOUMA NAVIGATION CANAL General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Houma Navigation Canal - Bubba Dove Floodgate - Marine Construction --- ---Work for the Houma Navigation Canal Locks Complex project is underway. Construction at the Bubba Dove Floodgates will take place 24-hours a day, 7-days a week. Mariners are requested to transit the area at their slowest safe speed to minimize wake and proceed with caution. VHF-FM Channels: 13 and 71 Valid 2025-05-08 to 2028-05-26. Position 29-19.78N 090-43.80W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-6EDEB9SÉCURITÉGALVESTON BAY ENTRANCE CHANNEL - HOUSTON SHIP CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Houston Ship Channel - Barbours Terminal Channel - Marine Construction and Dredging --- --- Dredging and marine construction will be taking place along the Houston Ship Channel and the Barbours Terminal Channel, 24-hours a day, 7-days a week. Dredging and demolition will take place along Morgans Point and transition into concrete bulkhead construction. An additional bulkhead wall will be built along Spilmans Island. Dive operations may take place intermittently throughout the project. On-scene vessels will include the T/Vs MOONEY and EVERLINE, the Work Boat SCULLY, the Crane Barge CB01 and the Barge GD-2013. Mariners are urged to transit the area at their slowest safe speed, observe all day shapes and dive flags, and proceed with caution. VHF-FM Channels: 13 and 16 Valid 2025-04-07 to 2027-07-01. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL General / Hazards To Navigation / Hazards Brownsville Ship Channel - Dismantle and Disposal of Former U.S. Naval Vessels --- --- The International Shipbreaking Limited facility, located adjacent to the Brownsville Ship Channel, is actively dismantling and disposing of U.S. Navy ships. All passing vessels, including tour boats, fishing vessels, and recreational vessels, should remain in the channel and away from shipbreaking activity due to potential hazards associated with overhead industrial work. POC: (956) 831-2299, Email: [email protected] or [email protected] Valid 2025-02-03 to 2027-12-31. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- MOBILE BAR - MOBILE BAY General / Bridges / Construction Mobile Bay - Tensaw River - Spanish River - Bridge Construction --- --- Construction of the new eastbound SR-16 (HWY 98) bridge near the mouth of the Tensaw/Spanish River is in progress in Mobile Bay. Work will include pile driving, seawall installation, beam setting, false work support piling and westbound bridge demolition. Operations will take place from 6:00 a.m. to 6:00 p.m., Monday through Saturday. On-scene vessels will include the T/Vs MISS ALLI, MISS HALEY and KEITH JACOBSON, the Spud Barges KS561 and MCC1507, two crew boats, four deck barges, and a ringer barge. Mariners are requested to transit the area with caution and at their slowest safe speed to minimize wake. VHF-FM Channel: 16, POC: (334) 704-3314 Valid 2025-01-29 to 2027-02-15. Position 30-41.02N 088-00.52W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- GALVESTON BAY - GALVESTON CHANNEL General / MSIB Galveston Harbor Channel - VTS Operating Restrictions --- To: Until Further Notice --- U.S. Coast Guard Vessel Traffic Service Houston-Galveston directs the following for barge operations west of a line drawn from 29-18.73N 094-48.62W at Pelican Island Storage Terminals, to 29-18.50N 094-48.62W at Galveston Pier 36. a) No barge reconfiguration within the Main Galveston Channel. b) Normal dockside barge operations remain authorized. c) Transits under the Pelican Island Bridge remain suspended for Vessel Traffic Service Users. d) Mariners should plan their transit accordingly to account for the restrictions and operational window for arrivals/departures. Vessels engaged in towing will not be allowed to push-in along the channel to accommodate arrivals/departures. Valid 2025-01-28 until further notice. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-2850F6SÉCURITÉSECTOR NEW ORLEANS, SUBMERGED LAND ACT (SLA) - ATCHAFALAYA CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Atchafalaya Bar Channel - Dredge Operation --- --- 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 Valid 2025-01-07 to 2026-12-31. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR HOUSTON-GALVESTON, EXCLUSIVE ECONOMIC ZONE (EEZ) General / Miscellaneous Gulf of America - Research Buoy --- --- A lighted yellow research buoy has been established in position 29-28.13N 093-42.73W. Mariners are urged to transit the area with caution. Valid 2024-12-12 to 2028-08-01. Position 29-28.13N 093-42.73W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- GALVESTON BAY - GALVESTON CHANNEL General / Hazards To Navigation / Shoaling Reported Galveston Harbor Channel - Port of Galveston - Draft Restrictions --- To: Until Further Notice --- Draft restrictions of 44 ft or less are in place at the Port of Galveston. Waivers for vessel drafts may be granted based on the state of tides and transit plans. All deep draft vessels should transit the channel with caution and reference recent USACE channel surveys at: http://www.swg.usace.army.mil/Missions/Navigation/Navigation-Projects-Contracts/ Valid 2024-10-25 until further notice. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- BAYOU RIGAUD - BARATARIA WATERWAY General / Bridges / Construction Barataria Waterway - Bridge Construction --- --- Bridge construction is taking place in the Barataria Waterway at approximate Mile 35.2. Operations will be conducted from 6:00 a.m. to 6:00 p.m., daily. On-scene equipment includes two crane barges and one material barge. Minimal impact to marine traffic is expected and the horizontal bridge clearance will be maintained at 60 feet, center opening. POC: (504) 615-6253 Valid 2024-10-03 to 2026-12-15. Position 29-43.37N 090-07.23W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - CALCASIEU RIVER General / Bridges / Construction Contraband Bayou - Bridge Construction --- --- Bridge construction for the Nelson Rd-Sallier Rd Connection Bridge over Contraband Bayou is taking place in the area. Vessels should coordinate transits through the work area with the on-scene vessels. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution. VHF-FM Channels: 8, 13 and 16, POC: (407) 948-0828 or (337) 247-3242 Valid 2024-10-01 to 2027-10-31. Position 30-12.50N 093-14.93W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-C6005CSÉCURITÉSECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) - BRAZOS RIVER CROSSING General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Brazos River Floodgates - GIWW, Mile 400.8, WHL - Floodgate Closure --- ---The Brazos River Floodgates on the GIWW, Mile 400.8, WHL, will undergo repairs to the guide-walls and sector gates. The floodgates will have daily daytime closures to marine traffic, Monday through Friday, from 7:00 a.m. to 7:00 p.m. Work will not be performed on weekends or Federal Holidays. Mariners should confirm closure times prior to transiting the area to avoid delays. POC: Lockmaster (979) 402-2888 Valid 2024-02-29 to 2026-12-31. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026