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 3 of 6
- SECTOR NEW ORLEANS, EXCLUSIVE ECONOMIC ZONE (EEZ) General / Hazards To Navigation / Obstructions Gulf of America - Platform Removal Buoy --- Established: 2026-10-10 --- Platform removal operations are taking place in the Gulf of America, Eugene Island Area, Block 123, at Platform B. Topside portions of the platform have been removed, while subsea portions still remain in the area. A white and orange buoy with a flashing white light has been temporarily established in approximate position 28-56.93N 091-20.49W to mark subsea hazards remaining near the worksite. The buoy will remain onsite until site clearance is complete. Mariners are urged to avoid the area. Position 28-56.93N 091-20.50W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR NEW ORLEANS, EXCLUSIVE ECONOMIC ZONE (EEZ) General / Hazards To Navigation / Obstructions Gulf of America - Platform Removal Buoy --- Established: 2026-10-10 --- Platform removal operations are taking place in the Gulf of America, Eugene Island Area, Block 123, at Platform A. Topside portions of the platform have been removed, while subsea portions still remain in the area. A white and orange buoy with a flashing white light has been temporarily established in approximate position 28-56.00N 091-21.60W to mark subsea hazards remaining near the worksite. The buoy will remain onsite until site clearance is complete. Mariners are urged to avoid the area. Position 28-56.00N 091-21.60W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- MORGAN CITY TO PORT ALLEN - MORGAN CITY-PORT ALLEN ALTERNATE ROUTE General / Bridges / Repairs, Painting, Or Fender Replacement Morgan City-Port Allen Alternate Route - Bayou Sorrel -Bridge Repairs --- --- The Bayou Sorrel (SR 75) Bridge at Mile 38.4 of the Morgan City – Port Allen Alternate Route is undergoing fender repairs. Mariners are urged to proceed with caution when transiting the area. For additional information and status updates, mariners may contact the bridge operator at (225) 659-1484. Valid 2026-10-09 to 2026-11-26. Position 30-09.33N 091-19.88W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change The Coast Guard will convert the following navigational ranges to day/night optics and removing the KRW range boards after November 24, 2026. Change Brownsville Channel F Range Rear Light (LLNR-29995) in position 25-56.34N 097-26.17W, from showing Oc G 4s, 98ft, KRW on skeleton tower, visible 2° each side of rangeline to show Oc G 4s (NIGHT), and Oc W 4s (DAY), visible only on rangeline; Lighted throughout 24 hours: Rangeline does not mark centerline of channel. Position 25-56.35N 097-26.17W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-1A05AFSÉCURITÉSECTOR MOBILE, TERRITORIAL SEA - SECTOR MOBILE, SUBMERGED LAND ACT (SLA) General / Marine Construction (Excluding Bridges) / Boring and Core Samples Gulf of America - Survey Operation --- --- Geotechnical surveys and vibracore sampling will be conducted in the Gulf of America off the coast of Panama City Beach, FL. The survey area will be bound by approximate positions: 30-14.33N 085-56.00W, 30-05.40N 085-41.68W, 30-01.18N 085-45.80W and 30-10.07N 085-59.90W. Survey vessels will be restricted in their ability to maneuver. Mariners are urged to maintain a wide berth from the survey vessels and transit the area with caution. VHF-FM Channel: 16 Valid 2026-10-15 to 2026-12-15. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change Relocate Brownsville Channel Light 36 (LLNR-29910/43030) in approximate position 26-01.17N 097-15.22W, showing Fl Q R, 17ft, 3NM, TR-TY on pile, Ra ref, to approximate position 26-01.18N 097-15.22W showing Fl Q R, 17ft, 3NM, TR-TY on pile, Ra ref. Position 26-01.18N 097-15.22W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change Relocate Brownsville Channel Light 40 (LLNR-29935/43055) in approximate position 25-59.93N 097-17.45W, showing Fl R 4s, 17ft, 3NM, TR-TY on pile, to approximate position 25-59.93N 097-17.45W showing Fl R 4s, 17ft, 3NM, TR-TY on pile, Ra ref. Position 25-59.93N 097-17.45W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change Relocate Brownsville Channel Light 30 (LLNR-29855/42975) in approximate position 26-02.42N 097-12.66W, showing Fl R 4s, 17ft, 3NM, TR-TY on pile, Ra ref, to approximate position 26-02.43N 097-12.67W showing Fl R 4s, 17ft, 3nm, TR-TY on pile, Ra ref. Position 26-02.43N 097-12.67W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- GALVESTON BAY ENTRANCE CHANNEL - HOUSTON SHIP CHANNEL ATON / Advanced Notice of Change The Coast Guard will make the following Aids to Navigation Change after December 01, 2026. Change Upper Red Light Bend Inbound Range Front Light (LLNR-25230) in position 29-43.59N 095-01.23W, from showing Q R, 76ft, KRW on skeleton tower on piles, for upbound traffic. Visible 2° each side of rangeline to show Q R, 76ft, KRW on skeleton tower on piles; For upbound traffic, visible 1.5° each side of rangeline. Position 29-43.60N 095-01.23W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change Relocate Brownsville Channel Light 45 (LLNR-29975/43085) in approximate position 25-58.55N 097-19.75W, showing Fl Q G, 17ft, 3NM, SG-SY on pile, Ra ref, to approximate position 25-58.54N 097-19.74W showing Fl Q G, 17ft, 3NM, SG-SY on pile, Ra ref. Position 25-58.53N 097-19.75W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change Relocate Brownsville Channel Light 31 (LLNR-29880/43000) in approximate position 26-02.03N 097-13.15W, showing Fl Q G, 17ft, 3NM, SG-SY on pile, Ra ref, to approximate position 26-02.02N 097-13.15W showing Fl Q G, 17, ft, 3NMSG-SY on pile, Ra ref. Position 26-02.02N 097-13.15W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- GALVESTON BAY ENTRANCE CHANNEL - HOUSTON SHIP CHANNEL ATON / Advanced Notice of Change The Coast Guard will make the following Aids to Navigation Change after December 01, 2026. Change Lower Red Light Bend Inbound Range Rear Light (LLNR-25065) in position 29-42.13N 095-01.06W, from showing Iso G 6s, 26ft, KRW on skeleton tower on piles to show Iso G 6s, 26ft, KRW on skeleton tower on piles, visible 1.5° each side of rangeline. Position 29-42.13N 095-01.07W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- BRAZOS SANTIAGO PASS - LAGUNA MADRE CHANNEL ATON / Advanced Notice of Change Relocate Laguna Madre Channel Light 28 (LLNR-29605) in approximate position 26-02.87N 097-11.92W, showing Fl R 2.5s, 17ft, 4NM, TR on dolphin, to approximate position 26-05.85N 097-11.97W showing Fl R 2.5s, 17ft, 4NM, TR on pile, Ra ref. Position 26-02.85N 097-11.97W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change Relocate Brownsville Channel Light 37 (LLNR-29915/43035) in approximate position 26-01.09N 097-15.19W, showing Fl Q G, 17ft, 3NM, SG-SY on pile, Ra ref, to approximate position 26-01.08N 097-15.19W showing Fl Q G, 17ft, 3NM, SG-SY on pile, Ra ref. Position 26-01.08N 097-15.18W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change Relocate Brownsville Channel Light 48 (LLNR-29985/43105) in approximate position 25-58.42N 097-20.36W, showing Fl R 2.5s, 17ft, 3NM, TR-TY on dolphin, to approximate position 25-58.43N 097-20.37W showing Fl R 2.5s, 17ft, 3NM, TR-TY on pile, Ra ref. Position 25-58.42N 097-20.37W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change Relocate Brownsville Channel Light 32 (LLNR-43005) in approximate position 26-02.42N 097-13.19W, showing Fl Q R, 17ft, 3NM, TR-TY on pile, Ra ref, to approximate position 26-02.11N 097-13.20W showing Fl Q R, 17ft, 3NM, TR-TY on pile, Ra ref. Position 26-02.12N 097-13.20W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change Relocate Brownsville Channel Light 46 (LLNR-29980/43090) in approximate position 25-58.63N 097-19.78W, showing Fl Q R, 17ft, 3NM, TR-TY on pile, Ra ref, to approximate position 25-58.64N 097-19.78W showing Fl Q R, 17ft, 3NM, TR-TY on pile, Ra ref. Position 25-58.65N 097-19.78W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- BRAZOS SANTIAGO PASS - LAGUNA MADRE CHANNEL ATON / Advanced Notice of Change Relocate Laguna Madre Channel Light 9 (LLNR-29565) in approximate position 26-03.71N 097-10.35W, showing Fl G 2.5s, 17ft, 3NM, SG on dolphin, to approximate position 26-03.70N 097-10.34W showing Fl G 2.5s, 17ft, 3NM, SG on pile, Ra ref. Position 26-03.70N 097-10.35W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-5081A5SÉCURITÉSECTOR MOBILE, TERRITORIAL SEA - SECTOR MOBILE, SUBMERGED LAND ACT (SLA) General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Saint Joseph Bay - Mexico Beach - Jetty Construction --- --- A protection jetty will be constructed at the Mexico Beach Inlet near the end of Canal Street along the east side of the channel. Additional work will be conducted to reconstruct the existing west jetty. Operations will take place near approximate position 29-56.99N 085-25.81W, and will be conducted from 7:00 a.m. to 4:00 p.m., Monday through Friday. Mariners are urged to transit center of channel near the worksite to avoid spoil areas and work areas located east and west of the channel limits. Valid 2026-10-12 to 2027-04-30. Position 29-56.98N 085-25.82W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- BRAZOS SANTIAGO PASS - LAGUNA MADRE CHANNEL ATON / Advanced Notice of Change Relocate Laguna Madre Channel Lighted Buoy 4 (LLNR-29540) in approximate position 26-03.99N 097-10.05W, showing Fl Q R, 3NM, Red, to approximate position 26-04.00N 097-10.05W showing Fl Q R, 3NM, Red. Position 26-04.00N 097-10.05W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- BRAZOS SANTIAGO PASS - LAGUNA MADRE CHANNEL ATON / Advanced Notice of Change Relocate Laguna Madre Channel Lighted Buoy 5 (LLNR-29545) in approximate position 26-03.90N 097-10.01W, showing Fl Q G, 3NM, Green to approximate position 26-03.88N 097-10.00W showing Fl Q G, 3NM, Green. Position 26-03.88N 097-10.00W 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 Buoy --- Reported: 2026-10-01 --- Platform removal operations are taking place in the Gulf of America, Vermillion Area, Block 39. Topside portions of the platform have been removed, while subsea portions still remain in the area. A white and orange buoy with a flashing white light has been temporarily established in approximate position 29-26.55N 092-32.18W to mark subsea hazards remaining near the worksite. Mariners are urged to avoid the area. Position 29-26.55N 092-32.18W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- BRAZOS SANTIAGO PASS - LAGUNA MADRE CHANNEL ATON / Advanced Notice of Change Relocate Laguna Madre Channel Light 15 (LLNR-29575) in approximate position 26-03.47N 097-10.75W, showing Fl G 2.5s, 17ft, 3NM, SG on pile, to approximate position 26-03.46N 097-10.75W showing Fl G 2.5s, 17ft, 3NM, SG on pile, Ra ref. Position 26-03.47N 097-10.75W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change Relocate Brownsville Channel Light 34 (LLNR-29890/43010) in approximate position 26-01.90N 097-13.64W, showing Fl R 2.5s, 17ft, 3NM, TR-TY on pile, Ra ref, to approximate position 26-01-54-424N/097-13-38.821W showing Fl R 2.5s, 17ft, 3NM, TR-TY on pile, Ra ref. Position 26-01.90N 097-13.65W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change Relocate Brownsville Channel Light 35 (LLNR-29895/43015) in approximate position 26-01.37N 097-14.58W, showing Fl G 4s, 17ft, 4NM, SG-SY on pile, Ra ref, to approximate position 26-01.37N 097-14.57W showing Fl G 4s, 17ft, 4NM, SG-SY on pile, Ra ref. Position 26-01.37N 097-14.57W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-09CF35SÉCURITÉGALVESTON BAY ENTRANCE CHANNEL - HOUSTON SHIP CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Houston Ship Channel - Dredge Operation --- --- The Dredge NIMITZ will conduct dredging in the Houston Ship Channel from Houston Ship Channel Lighted Buoy 95 (LLNR-24790.1) to Houston Ship Channel Light 109A (LLNR-25265). Work will be conducted 24-hours a day, 7-days a week. The dredge is currently operating near the mouth of the San Jacinto Bay Channel/USI Canal. Dredged material will be pumped through pipeline to Alexander Island. Subline will cross the channel near the dredge and will be marked with anchor buoys. Additional on-scene vessels will include a crane barge, two deck barges, a fuel barge, and the T/Vs MISS PAULA, COURTNEY LUNDIN and KIRA MADISON. Vessels with transit plans into/out of USI Canal will check in with U.S. Coast Guard Vessel Traffic Service Houston-Galveston as normal on VHF-FM Channel 05A. Mariners must notify the dredge with no less than 45 minutes notice of their USI Canal transit plan. The VTS may assist in this process, facilitating calling the dredge if needed, in order to prevent confusion, delayed notice, and congestion. The dredge will work with mariners to move as needed to facilitate transits. Mariners may be requested to delay transits or coordinate with other mariners, if safe and operationally able, to ensure vessels can more efficiently coordinate in/outbound transits when the dredge has moved. VHF-FM Channels: 13, 16 and 79, POC: (337) 290-6926 Valid 2026-10-14 to 2026-12-31. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- BRAZOS SANTIAGO PASS - LAGUNA MADRE CHANNEL ATON / Advanced Notice of Change Relocate Laguna Madre Channel Light 22 (LLNR-29590) in approximate position 26-03.24N 097-11.32W, showing Fl R 4s, 17ft, 3NM, TR on pile, Ra ref, to approximate position 26-03.24N 097-11.32W showing Fl R 4s, 17ft, 3NM, TR on pile, Ra ref. Position 26-03.23N 097-11.32W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- BRAZOS SANTIAGO PASS - LAGUNA MADRE CHANNEL ATON / Advanced Notice of Change Relocate Laguna Madre Channel Light 29 (LLNR-29606) in approximate position 26-02.79N 097-11.88W, showing Fl G 4s, 17ft, 3NM, SG on pile, to approximate position 26-02.76N 097-11.90W showing Fl G 4s, 17ft, 3NM, SG on pile, Ra ref. Position 26-02.77N 097-11.90W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LAGUNA MADRE CHANNEL - BROWNSVILLE CHANNEL ATON / Advanced Notice of Change The Coast Guard will convert the following navigational ranges to day/night optics and removing the KRW range boards after November 24, 2026. Change Brownsville Channel F Range Front Light (LLNR-29990/43110) in position 25-57.04N 097-24.19W, from showing Fl G 2.5s, 45ft, KRW-I on skeleton tower, visible 2° each side of rangeline to show Fl G 2.5s (NIGHT), and Fl W 2.5s (DAY), 45ft, visible 1.5° each side of rangeline (NIGHT); Visible only on rangeline (DAY); Lighted throughout 24 hours; Rangeline does not mark centerline of channel. Position 25-57.03N 097-24.18W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- BRAZOS SANTIAGO PASS - LAGUNA MADRE CHANNEL ATON / Advanced Notice of Change Relocate Laguna Madre Channel Light 26 (LLNR-29595) in approximate position 26-03.01N 097-11.68W, showing Fl R 2.5s, 17ft, 3NM, TR on pile, to approximate position 26 03 00.0877N/097 11 42.9777W showing Fl R 2.5s, 17ft, 3NM, TR on pile, Ra ref. Position 26-03.00N 097-11.72W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- BRAZOS SANTIAGO PASS - LAGUNA MADRE CHANNEL ATON / Advanced Notice of Change Relocate Laguna Madre Channel Light 21 (LLNR-29585) in approximate position 26-03.17N 097-11.25W, showing Fl G 4s, 17ft, 3NM, SG on pile, to approximate position 26-03.15N 097-11.25W showing Fl G 4s, 17ft, 3NM, SG on pile, Ra ref. Position 26-03.15N 097-11.25W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- GALVESTON BAY ENTRANCE CHANNEL - HOUSTON SHIP CHANNEL ATON / Advanced Notice of Change The Coast Guard will make the following Aids to Navigation change after November 24, 2026. Change Lynchburg Outbound Range Front Light (LLNR-25535) in position 29-45.33N 095-03.92W from showing Q G, 25ft, KRW on skeleton tower on piles, visible 4° each side of rangeline to show Q W, 25ft, KRW on skeleton tower on piles, visible all around; higher intensity 1.5° each side of rangeline. Ra Ref. Position 29-45.33N 095-03.92W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- TEXAS CITY CHANNEL - GALVESTON-FREEPORT ATON / Advanced Notice of Change The Coast Guard will make the following Aids to Navigation Changes after November 24, 2026: Change Galveston-Freeport E Range Rear Light (LLNR-36590) in position 29-16.84N 094-53.25W from showing Iso G 6s, 38Ft, KRW-I on skeleton tower, visible all around; higher intensity 10º each side on rangeline to show Iso G 6s, 38Ft, KRW-I on skeleton tower, visible all around; higher intensity 1.5º each side on rangeline. Position 29-16.83N 094-53.25W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- GALVESTON BAY ENTRANCE CHANNEL - HOUSTON SHIP CHANNEL ATON / Advanced Notice of Change The Coast Guard will make the following Aids to Navigation change after November 24, 2026. Change Lynchburg Outbound Range Rear Light (LLNR-25540) in position 29-45.28N 095-03.84W from showing Iso G 6s, 35ft, KRW on skeleton tower on piles, visible 4° each side of rangeline to show Iso W 6s, 35ft, KRW on skeleton tower on piles, visible 1.5° each side of rangeline. Ra Ref. Position 29-45.28N 095-03.83W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-78467CSÉCURITÉHOUMA NAVIGATION CANAL - TIMBALIER TERREBONNE BAY General / Marine Construction (Excluding Bridges) / Dredging Lake Chien - Dredge and Shoreline Operation --- --- Construction of a living shoreline will take place along the northern shoreline of Lake Chien. Operations will include the dredging of access channels and the placement of stone along the shoreline. Work will take place daily, during daylight hours only. Dredged material will be placed in temporary spoil areas located along the access channels, which will be backfilled when operations are complete. The access channels will be marked with 42 temporary red and green aids to navigation. Mariners should avoid transiting near the project access channels, as water depths near the channel may be reduced due to spoil placement. A staging area for barges and equipment will be located in approximate position 29-20.90N 090-25.90W. On-scene vessels will include a barge mounted excavator, a spud barge, up to six material and deck barges, two towing vessels, and crew boats. Mariners are requested to transit at their slowest safe speed to minimize wake near the work areas, the access channels, and the spud barge. VHF-FM Channels: 13 and 78, POC: (601) 503-0973 Valid 2026-10-04 to 2027-10-31. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- TEXAS CITY CHANNEL - GALVESTON-FREEPORT ATON / Advanced Notice of Change The Coast Guard will make the following Aids to Navigation Changes after November 24, 2026: Change Galveston-Freeport E Range Front Light (LLNR-36585) in position 29-16.95N 094-53.70W from showing Q W, 15ft, KRW-I on pile structure; on same structure as Range D Front Light, for eastbound traffic, visible all around to show Q G, 15ft, KRW-I on pile structure; on same structure as Range D Front Light, for eastbound traffic, visible all around; higher intensity 1.5º each side of rangeline. Position 29-16.95N 094-53.70W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- TEXAS CITY CHANNEL - GALVESTON-FREEPORT ATON / Advanced Notice of Change The Coast Guard will make the following Aids to Navigation Changes after November 24, 2026: Change Galveston-Freeport D Range Front Light (LLNR-36515) in position 29-16.95N 094-53.70W from showing Q G, 20ft, KRW-I on pile structure on same structure as Range E Front Light, for westbound traffic, visible all around; higher intensity on rangeline to show Q G, 20ft, KRW-I on pile structure on same structure as Range E Front Light, for westbound traffic, visible all around; higher intensity 1.5º each side of rangeline. Position 29-16.95N 094-53.70W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-66B903SÉCURITÉSECTOR NEW ORLEANS, EXCLUSIVE ECONOMIC ZONE (EEZ) - SECTOR NEW ORLEANS, TERRITORIAL SEA General / Hazards To Navigation / Hazards Gulf of America - Unlit/Uncharted Cold-Stacked Jack-Up Rigs --- Reported: 2026-09-28 --- Two cold-stacked jack-up rigs have been reported unlit and uncharted in South Timbalier Area, Block 39, in approximate position 28-54.70N 090-17.16W, on September 28, 2026. Mariners are urged to transit this area with extreme caution. Position 28-54.70N 090-17.17W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- TEXAS CITY CHANNEL - GALVESTON-FREEPORT ATON / Advanced Notice of Change The Coast Guard will make the following Aids to Navigation Changes after November 24, 2026: Change Galveston-Freeport D Range Rear Light (LLNR-36520) in position 29-16.59N 094-53.93W from showing Iso G 6s, 40ft, KRW-I on skeleton tower, visible 10° each side of rangeline to show Iso G 6s, 40ft, KRW-I on skeleton tower, visible all around higher intensity 1.5° each side of rangeline. Position 29-16.58N 094-53.93W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-92EFE5SÉCURITÉBRETON/CHANDELEUR ICW ALTERNATE ROUTE - BAPTISTE COLLETTE BAYOU General / Marine Construction (Excluding Bridges) / Dredging Baptiste Collette Bayou - Staged Equipment --- --- Equipment and pipeline will be staged along the Baptiste Collette Bayou for the dredge project taking place between Miles 5.0 and 12.0. The staging area will be located between Miles 1.8 and 2.6 of Baptiste Collette Bayou and will be bound by approximate positions: 29-18.72N 089-19.24W, 29-18.68N 089-19.13W, 29-18.10N 089-19.47W and 29-18.14N 089-19.55W. Mariners are urged to transit the area with caution. VHF-FM Channels: 13, 16 and 67, POC: (337) 852-4066 or (224) 221-3753 Valid 2026-09-28 to 2026-12-03. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- VICTORIA EAST ENTRANCE CHANNEL - VICTORIA CHANNEL General / Bridges / Public Notice Victoria Barge Canal - Bridge Public Notice --- --- An application to replace the SR 35 Highway Bridge over the Victoria Barge Canal at Mile 8.96 has been received. Public Notice 05-26 for this project has been published to the U.S. Coast Guard NAVCEN website. Comments from mariners or other interested parties regarding this proposed bridge project will be received for the record at the address given in the public notice through October 8, 2026. Public Notice 05-26 can be found here: https://www.navcen.uscg.gov/public-notices-for-bridges-active-by-district?district=8&subdistrict=r,g Valid 2026-09-28 to 2026-10-08. Position 28-31.13N 096-48.28W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-DAEDDF-2SÉCURITÉBRETON/CHANDELEUR ICW ALTERNATE ROUTE - BAPTISTE COLLETTE BAYOU General / Marine Construction (Excluding Bridges) / Dredging Baptiste Collette Bayou - Staged Equipment --- --- Equipment and pipeline will be staged along the Baptiste Collette Bayou for the dredge project taking place between Miles 5.0 and 12.0. The staging area will be located south of Baptiste Collette Bayou Light 17 (LLNR-12465) and will be bound by approximate positions: 29-21.57N 089-18.09W, 29-21.59N 089-18.02W, 29-21.44N 089-17.99W and 29-21.43N 089-18.07W. Mariners are urged to transit the area with caution. VHF-FM Channels: 13, 16 and 67, POC: (337) 852-4066 or (224) 221-3753 Valid 2026-09-25 to 2026-12-03. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-DAEDDFSÉCURITÉBRETON/CHANDELEUR ICW ALTERNATE ROUTE - BAPTISTE COLLETTE BAYOU General / Marine Construction (Excluding Bridges) / Dredging Baptiste Collette Bayou - Staged Equipment --- --- Equipment and pipeline will be staged along the Baptiste Collette Bayou for the dredge project taking place between Miles 5.0 and 12.0. The staging area will be located south of Baptiste Collette Bayou Light 18 (LLNR-12470) and will be bound by approximate positions: 29-21.56N 089-18.17W, 29-21.57N 089-18.11W, 29-21.27N 089-18.12W and 29-21.27N 089-18.18W. Mariners are urged to transit the area with caution. VHF-FM Channels: 13, 16 and 67, POC: (337) 852-4066 or (224) 221-3753 Valid 2026-09-25 to 2026-12-03. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- CHOCTAWHATCHEE BAY - WEST BAY TO SANTA ROSA SOUND General / Hazards To Navigation / Obstructions Choctawhatchee Bay - Uncharted Piles --- Reported: 2026-05-27 --- Uncharted piles have been reported approximately 420 yards north of GIWW, Mile 225.3, EHL, in approximate positions 30-24.37N 086-33.64W, 30-24.37N 086-33.62W and 30-24.37N 086-33.60W. The piles are marked with red lights. Mariners are urged to transit this area with caution. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- NEW ORLEANS PORT ARTHUR General / Hazards To Navigation / Hazards GIWW - Bridge Damage/Temporary Buoy --- Reported: 2026-07-01 --- The Black Bayou Bridge at Mile 237.5, WHL, experienced an allision, causing damage to the northeast bridge fendering system. The fendering system is currently ineffective to defend against further allisions. A temporary unlighted orange buoy has been placed near the damaged fender on the east side of the bridge. Mariners should avoid the buoy and transit the bridge with extreme caution to avoid further serious damage to the bridge. Position 30-04.97N 093-17.12W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SANTA ROSA SOUND ENTRANCE - SANTA ROSA SOUND General / Miscellaneous The Department of the Air Force will enforce the charted Restricted Area found in 33 CFR 334.730. This area includes certain navigable waters of Santa Rosa Sound adjacent to Eglin Air Force Base Property on Santa Rosa Island. All entry, transit, anchoring, or drifting of any persons, vessels, and other craft (including unmanned craft) within the Restricted Area for any reason is not allowed without the permission of the U.S. Air Force (96 TW/CC). Permitted access to the Restricted Area may be granted, in certain circumstances, by contacting the 96 TW/CC at (850) 882-2000. Position 30-24.08N 086-43.02W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR CORPUS CHRISTI, TERRITORIAL SEA - SECTOR CORPUS CHRISTI, SUBMERGED LAND ACT (SLA) General / Miscellaneous Gulf of America - Uncharted Private Aid to Navigation --- Established: 2025-01-16 --- An offshore yellow buoy has been established in position 27-34.71N 095-48.16W. Position 27-34.72N 095-48.15W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- NEW ORLEANS HARBOR - NEW ORLEANS TO BATON ROUGE General / Hazards To Navigation / Shoaling Reported Mississippi River - Shoaling --- Reported: 2026-08-17 --- Shoaling due to low water has been reported along the LDB just below College Point, Mile 156.0, AHOP. The virtual aid to navigation, College Point Shoal (MMSI: 993682269), has been established to mark the shoaled area in approximate position 29-59.00N 090-48.90W. Mariners are urged to avoid the area and transit Mile 156.0 with caution. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- LNM08G-2AE118SÉCURITÉSECTOR HOUSTON-GALVESTON, SUBMERGED LAND ACT (SLA) General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes GIWW - Breakwater Construction --- --- Breakwater construction will be conducted in the GIWW, between Miles 428.0 and 431.0, WHL. Work will be conducted from 7:00 a.m. to 7:00 p.m., daily. All work and fleeting will take place outside of the channel. On-scene vessels will include the M/V BILLY GENE and barges. Mariners are urged to transit the area at their slowest safe speed to minimize wake and proceed with caution. VHF-FM Channels: 13, 16 and 72, POC: (318) 729-7516 Valid 2026-10-05 to 2026-12-05. USCG Heartland (Gulf) District Local Notice to Mariners 45/2026
- SECTOR HOUSTON-GALVESTON, EXCLUSIVE ECONOMIC ZONE (EEZ) General / Miscellaneous Gulf of America - Uncharted Private Aid to Navigation --- Established: 2025-01-16 --- An offshore yellow buoy has been established in position 27-46.17N 095-04.54W. Position 27-46.17N 095-04.53W USCG Heartland (Gulf) District Local Notice to Mariners 45/2026