US Coast Guard LNM - Southeast District (D7) archive
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- NEW RIVER SOUND General / Bridges Location: 26-08.28N 080-06.51W Bridge Name: East Sunrise Boulevard Bridge The bridge will undergo a rehabilitation beginning 6/1/2026 and end on or around 9/2027. The contractor will be working 24 hours a day. There will be construction equipment around the southeast fender and bridge span. In-water equipment will be lighted in accordance with Inland Nav Rules. The channel will be partially obstructed and the drawbridge is authorized a temporary deviation to the operating schedule. The bridge is authorized a temporary deviation from drawbridge operations and it will operate as follows: - From 7 a.m. on September 28, 2026, through 9 p.m. on November 14, 2026, the drawbridge shall open on the hour and half-hour providing a single-leaf opening. A full opening will be provided on the hour and half-hour with a 2-hour advanced notice to the bridge tender. - From September 30, 2026, through November 14, 2026, navigation channel will be partially obstructed between the hours of 9 p.m. to 7 a.m. A full opening will not be provided during overnight hours. Vessels able to pass without an opening may do so at any time through the unobstructed side. Mariners are advised to transit the area with caution. Valid 2026-07-28 to 2027-09-30. USCG Southeast District Local Notice to Mariners 44/2026
- STRANAHAN RIVER General / Bridges Location: 26-07.19N 080-06.54W Bridge Name: East Las Olas Boulevard Bridge UPDATE 6/18/2026 The bridge will undergo a rehabilitation beginning 5/4/2026 and end on or around 10/2027. There will be in-water construction equipment, which will be lighted in accordance with Inland Nav Rules. Work will take place around the clock. Beginning July 13, 2026, through November 13, 2026, the vertical clearance will be reduced by to 2 feet due to the installation of a containment system A temporary deviation to drawbridge operations has been authorized: East Las Olas Bridge will operate as follows: - From 8 a.m. on May 18, 2026, through 10 p.m. on November 13, 2026, the drawbridge shall open on the quarter-hour and three-quarter hour providing a single-leaf opening. A full opening will be provided on the quarter-hour and three-quarter hour with a 2-hour advanced notice to the bridge tender. - From July 13, 2026, through November 13, 2026, navigation channel will be partially obstructed between the hours of 10 p.m. to 8 a.m. Mariners are advised to transit the are with caution. Valid 2025-12-04 to 2027-02-06. USCG Southeast District Local Notice to Mariners 44/2026
- MATHENY CREEK General / Bridges / Temp Deviation Location: 27-18.16N 082-32.72W Bridge Name: Siesta Drive Bridge The Siesta Drive Bridge will operate as follows: - From 5 p.m. on Monday, October 19, 2026, through 12 p.m. on Friday, October 23, 2026, the bridge will provide a full opening daily between 12 p.m. and 5 p.m. on the hour and half-hour. At all other times, a single-leaf only opening will be provided on the hour and hour. - From Monday, October 26, 2026, through November 13, 2026, the bridge will operate as follows: o From 6 a.m. to 7 p.m. Monday through Friday, a single-leaf opening will be provided on the hour and half-hour. A full opening will be provided with a 4-hour advance notice. o At all other times, a full opening will be provided on the hour and half hour. A containment system will be installed on the underside of the drawbridge across the navigation channel. This will reduce the vertical clearance to 18 feet. Valid 2026-10-15 to 2026-11-14. USCG Southeast District Local Notice to Mariners 44/2026
- LNM07-06DD77SÉCURITÉSECTOR JACKSONVILLE, SUBMERGED LAND ACT (SLA) - ST JOHNS RIVER General / Marine Construction (Excluding Bridges) / Dredging 43572 Great Lakes Dredge and Dock Company, LLC will be dredging for the FY26 Jacksonville Harbor maintenance dredging project. Estimated project start date May 31, 2026, with an estimated completion date of August 16, 2026. Project work consists of maintenance dredging the Jacksonville Harbor channel with the Trailing Suction Hopper Dredge Padre Island. Work to be performed consists of maintenance dredging portions of Bar Cut-3 through Cut-17 with disposal of material into the Ocean Dredge Material Disposal Site (ODMDS) Zone C1 and maintenance dredging portions of Cut-55 through the Lower Terminal Channel (LTC) with disposal of material into Bartram Island Dredge Material Management Area (DMMA) Cell F. Approximately 340 feet of subline on pontoon tanks and float hose will be utilized for disposal in the Bartram Island Dredge Material Management Area Cell F. A spud barge will also be anchored off in this location (approximate coordinates below). All equipment will be lighted as per USCG requirements. Dredging Locations: Base Dredging (Centerline Coordinates) 30-23.38N 081-28.10W 30-23.01N 081-27.58W 30-22.89N 081-27.25W 30-22.86N 081-27.16W 30-22.85N 081-27.05W 30-22.86N 081-26.90W 30-23.02N 081-26.49W 30-23.36N 081-26.15W 30-23.75N 081-25.98W 30-24.05N 081-25.67W 30-24.14N 081-25.43W 30-24.18N 081-25.14W 30-23.98N 081-23.16W Option Dredging (Centerline Coordinates) 30-20.76N 081-37.23W 30-21.81N 081-37.02W 30-22.15N 081-37.51W Disposal Locations: ODMDS Zone C1 30-20.35N 081-17.99W 30-20.35N 081-17.52W 30-19.17N 081-17.99W 30-19.17N 081-17.52W Pump-Off Location - Bartram Island Cell F (Approximate) 30-22.91N 081-33.27W 30-22.88N 081-32.98W 30-22.83N 081-33.00W 30-22.75N 081-32.96W 30-22.71N 081-33.19W Subline Location 30-23.00N 081-33.26W 30-22.94N 081-33.27W Proposed Spud Barge Location 30-23.00N 081-33.23W 30-23.00N 081-33.19W 30-22.99N 081-33.19W 30-22.99N 081-33.23W Dredging and disposal operations are often done at slow speeds with limited maneuverability. Mariners are urged to use extreme caution in the area of the dredge. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. There will be a small survey vessel conducting surveys operations daily and will be crossing perpendicular to channel. Please pass survey vessels stern and provide a slow bell. Valid 2026-05-12 until further notice. USCG Southeast District Local Notice to Mariners 44/2026
- WINYAH BAY CHARLESTON HARBOR General / Bridges Location: 32-46.36N 079-50.52W Bridge Name: Ben Sawyer Bridge The swing bridge suffered a structural failure preventing routine openings. Due to the nature of the failure, the swing bridge will provide scheduled openings only at 10 a.m., 2 p.m. and 7 p.m., 7 days a week until further notice. Emergency openings will not be provided. Emergency repairs are ongoing. Mariners able to pass beneath the swing bridge without an opening may do so at anytime. Valid 2026-10-21 to 2027-04-19. USCG Southeast District Local Notice to Mariners 44/2026
- HILLSBORO RIVER General / Bridges Location: 26-13.91N 080-05.63W Bridge Name: East Atlantic Boulevard Bridge The bridge need not open to navigation including tugs with tows, from 6 p.m. to 9:30 p.m. on Saturday, November 7, 2026, to facilitate the City of Pompano Beach Drone Show Extravaganza. Public vessels of the United States and vessels in distress shall be passed at any time Valid 2026-10-20 to 2026-11-08. USCG Southeast District Local Notice to Mariners 44/2026
- NEW RIVER SOUND General / Bridges / Temp Deviation Location: 26-07.19N 080-06.54W Bridge Name: East Las Olas Boulevard Bridge The bridge will remain in the up/open position to navigation on Saturday, December 12, 2026, from 6:30 p.m. until 8:30 p.m. to facilitate the Seminole Hard Rock Winterfest Boat Parade. Valid 2026-10-15 to 2026-12-13. USCG Southeast District Local Notice to Mariners 44/2026
- NEW RIVER SOUND General / Bridges Location: 26-08.28N 080-06.51W Bridge Name: East Sunrise Boulevard Bridge The bridge will remain in the up/open position to navigation on Saturday, December 12, 2026, from 7 p.m. until 9 p.m. to facilitate the Seminole Hard Rock Winterfest Boat Parade. Valid 2026-10-15 to 2026-12-13. USCG Southeast District Local Notice to Mariners 44/2026
- NEW RIVER SOUND General / Bridges Location: 26-07.19N 080-06.54W Bridge Name: East Las Olas Boulevard Bridge The bridge need not open to navigation including tugs with tows, from 6:10 a.m. to 7:45 a.m. on Sunday, November 8, 2026, to facilitate the 20th Annual Liquid Youth 13.1 Fort Lauderdale Running Festival. Public vessels of the United States and vessels in distress shall be passed at any time. Valid 2026-10-23 to 2026-11-09. USCG Southeast District Local Notice to Mariners 44/2026
- HILLSBORO RIVER General / Bridges Location: 26-15.02N 080-05.40W Bridge Name: Northeast 14th Street Bridge The bridge need not open to navigation including tugs with tows, from 6 p.m. to 9:30 p.m. on Saturday, November 7, 2026, to facilitate the City of Pompano Beach Drone Show Extravaganza. Public vessels of the United States and vessels in distress shall be passed at any time Valid 2026-10-20 to 2026-11-08. USCG Southeast District Local Notice to Mariners 44/2026
- BUCK ISLAND General / Marine Events / Swim 54056 The U.S. Coast Guard will be enforcing a Special Local Regulation for the St. Croix Coral Reef Swim on November 8th, 2026 from 7 a.m. to noon. The regulated area encompasses: St. Croix, U.S. Virgin Islands; All waters of Christiansted Harbor within the following points: Starting at Point 1 in position 17-45.18N, 64-37.63W; then southwest to Point 2 in position 17-45.85N, 64-38.06W; then east along the shoreline to Point 3 in position 17-45.68N, 64-40.95W; then south to point 4 in position 17-45.43N, 64-40.91W. All vessels are required to maintain a minimum distance of 200yds from participants in the swim. All vessels are required to maintain a minimum distance of 200yds from participants in the swim. The U.S. Coast Guard may be contacted via VHF-FM channel 16. For more information, contact Ms. Kimberly Sanford at (253) 904-7390 or via email at [email protected] Valid 2026-09-21 to 2026-11-09. USCG Southeast District Local Notice to Mariners 44/2026
- SECTOR JACKSONVILLE, SUBMERGED LAND ACT (SLA) - ST JOHNS RIVER General / Naval Activity / Naval Testing (Surface / Underwater) 43708 US Navy watercraft will be operating from the SE of Blount Island transiting the St Johns River to Naval Station Mayport from May 18 to May 19, 2026 daily between 7 a.m. until 6 p.m. Water craft will monitor VHF-FM channels 13, 16, 72 and 74. Valid 2026-05-14 until further notice. USCG Southeast District Local Notice to Mariners 44/2026
- WAPPOO CREEK General / Bridges Location: 32-45.98N 079-58.45W Bridge Name: SC 171 (Wappoo Cut) Route Bridge The bridge need not open to navigation, including tugs with tows, from 5:30 a.m. to 11:30 a.m. on Saturday, October 31, 2026, to facilitate the 2026 James Island Connector 5K and 8K Run. Public vessels of the United States and vessels in distress shall be passed at any time. Valid 2026-10-08 to 2026-11-01. USCG Southeast District Local Notice to Mariners 43/2026
- LNM07-023221SÉCURITÉSECTOR JACKSONVILLE, SUBMERGED LAND ACT (SLA) - ST JOHNS RIVER General / Marine Construction (Excluding Bridges) / Boring and Core Samples 51938 A geotechnical investigation will be conducted on the St Johns River adjacent to the eastern shoreline of MCSF Blount Island. Operations will consist of using a drill rig mounted on a 12 ft x 32 ft barge anchored in place during hours of operation with spuds to drill 4 shallow borings near the shoreline to collect sediment samples. The barge is motorized and a tender boat will be accompanying the operation. Operations are expected to begin on or about September 14, 2026, with an estimated completion date of October 2, 2026. Sampling will be conducted during daylight hours from 7 a.m. to 7 p.m. Vessels will be monitoring VHF-FM channel 13 and 16. Positions for geotechnical borings: 30-24.22N 081-30.92W 30-24.25N 081-30.90W 30-24.15N 081-30.83W 30-24.17N 081-30.79W Valid 2026-08-24 to 2026-11-01. USCG Southeast District Local Notice to Mariners 43/2026
- HILLSBOROUGH RIVER General / Bridges Location: 27-56.61N 082-27.54W Bridge Name: Brorein Street Bridge The bridge need not open to navigation during the following dates and times: - September 26, 2026, from 7 a.m. to 10 a.m. to facilitate the St. Jude Walk/Run. - October 10, 2026, from 7 a.m. to 10:30 a.m. to facilitate the TPD Memorial Run/Walk. - October 17, 2026, from 7:30 a.m. to 11 a.m. to facilitate the Walk to End Alzheimer’s. - November 17, 2026, from 6:30 a.m. to 10 a.m. to facilitate the Bolt Run. - November 21, 2026, from 4 a.m. to 11 a.m. to facilitate Miles for Moffitt. - November 26, 2026, from 6 a.m. to 9 a.m. to facilitate the YMCA Turkey Gobble. - December 13, 2026, from 6:30 a.m. to 11 a.m. to facilitate the Hot Chocolate Runs. Public vessels of the United States and vessels in distress shall be passed at any time. Valid 2026-08-24 to 2026-12-14. USCG Southeast District Local Notice to Mariners 43/2026
- NEW RIVER SOUND General / Bridges Location: 26-08.29N 080-06.50W Bridge Name: East Sunrise Boulevard Bridge The bridge is authorized a temporary deviation from drawbridge operations and it will operate as follows: - From 7 a.m. on September 28, 2026, through 9 p.m. on November 14, 2026, the drawbridge shall open on the hour and half-hour providing a single-leaf opening. A full opening will be provided on the hour and half-hour with a 2-hour advanced notice to the bridge tender. - From September 30, 2026, through November 14, 2026, navigation channel will be partially obstructed between the hours of 9 p.m. to 7 a.m. A full opening will not be provided during overnight hours. Vessels able to pass without an opening may do so at any time through the unobstructed side. Mariners are advised to transit the area with caution. Valid 2026-09-09 to 2026-11-14. USCG Southeast District Local Notice to Mariners 43/2026
- WAPPOO CREEK General / Bridges Location: 32-45.98N 079-58.45W Bridge Name: 171 County Route Bridge The bridge need not open to navigation, including tugs with tows, from 5:30 a.m. to 11:30 a.m. on Saturday, October 31, 2026, to facilitate the 2026 James Island Connector 5K and 8K Run. Public vessels of the United States and vessels in distress shall be passed at any time. Valid 2026-10-15 to 2026-11-01. USCG Southeast District Local Notice to Mariners 43/2026
- LONG KEY General / Bridges / Rehabilitation Location: 24-50.28N 080-46.40W Bridge Name: US1/SR5 Highway Bridge - Channel 5 The bridge is undergoing a rehabilitation and repairs through October 2026. There will be barges, floating work platforms and work boats in the area behind the fender systems, but no obstructions to navigation are expected. Beginning July 14, 2025, through August 1, 2025, underwater work will begin with divers at two piers adjacent to the navigational channel, behind the fenders. All mariners are advised to proceed with caution and transit the area at a minimum wake speed. For waterways related questions, contact, Coast Guard Sector Key West Waterways, 305-292-8768 or email: [email protected] Valid 2025-07-02 to 2026-10-31. USCG Southeast District Local Notice to Mariners 43/2026
- FLORIDA BAY - SHELL KEY ATON / ATON Changes Location: 24-53.95N 080-39.65W Aid Name: Yellow Shark Channel Buoy 14 LLNR: 12853 Action: ESTABLISH Valid 2026-10-20 until further notice. USCG Southeast District Local Notice to Mariners 43/2026
- CANAVERAL BARGE CANAL General / Bridges Location: 28-24.46N 080-42.36W Bridge Name: Christa McAuliffe Bridge The Christa McAuliffe (SR 3) Bridge will provide single-leaf only openings as follows: - From 9 a.m. on October 5, 2026, through 9 a.m. on October 9, 2026. - From 9 a.m. on October 12, 2026, through 9 a.m. on October 16, 2026 - From 9 a.m. on October 19, 2026, through 9 a.m. on October 23, 2026 - From 9 a.m. on October 26, 2026, through 9 a.m. on October 30, 2026 At all other times (Friday morning through Monday morning), full openings will be provided. Valid 2026-08-06 to 2026-10-31. USCG Southeast District Local Notice to Mariners 43/2026
- BISCAYNE BAY General / Bridges Location: 25-46.19N 080-11.40W Bridge Name: Brickell Avenue Bridge The bridge need not open to navigation, including tugs and tugs with tows, from 4 p.m. until 5 p.m. on Saturday, October 31, 2026, to assist with vehicle traffic in support of the Red Bull Flugtag Event. Public vessels of the United States and vessels in distress shall be passed at any time. Valid 2026-10-08 to 2026-11-01. USCG Southeast District Local Notice to Mariners 43/2026
- LNM07-A7FAF1SÉCURITÉSECTOR CHARLESTON, TERRITORIAL SEA - SECTOR CHARLESTON, SUBMERGED LAND ACT (SLA) General / Marine Construction (Excluding Bridges) / Survey Operations 50598 Subcom LLC will conduct submarine cable installation operations off South Carolina. Work comprises shore-end lay, plow and ROV burial, surface lay (armored and unarmored), initial and final cable splicing, cable-end buoying/recovery, and post-lay inspection and burial (PLIB), within US State waters, the Territorial Sea (TS), Contiguous Zone (CZ), and Exclusive Economic Zone (EEZ). The cable ship SUBCOM DURABLE will begin operations on or about August 10, 2026, with an estimated completion date of September 25, 2026. Vessel will be monitoring VHF-FM channels 13 and 16. While conducting operations the vessel will be restricted in their ability to maneuver and requests a 2 NM CPA. For further information contact: [email protected]. Valid 2026-08-05 to 2026-10-31. USCG Southeast District Local Notice to Mariners 43/2026
- SOUTH GANDY CHANNEL General / Bridges / Rehabilitation Location: 27-53.11N 082-33.67W Bridge Name: Gandy Eastbound Bridge The Florida Department of Transportation is repairing the Gandy Eastbound Boulevard (US 92) bridge. The contractor, Structural Technologies, will have work boats and barges in the vicinity of the bridge. The main navigation channel will remain open and unobstructed to navigation. All mariners are advised to use caution when transiting the area. Valid 2025-11-14 to 2026-11-01. USCG Southeast District Local Notice to Mariners 43/2026
- HILLSBOROUGH RIVER General / Bridges / Temp Deviation Location: 27-56.50N 082-27.51W Bridge Name: Platt Street Bridge The bridge need not open to navigation during the following dates and times: - September 26, 2026, from 7 a.m. to 10 a.m. to facilitate the St. Jude Walk/Run. - October 10, 2026, from 7 a.m. to 10:30 a.m. to facilitate the TPD Memorial Run/Walk. - October 17, 2026, from 7:30 a.m. to 11 a.m. to facilitate the Walk to End Alzheimer’s. - November 17, 2026, from 6:30 a.m. to 10 a.m. to facilitate the Bolt Run. - November 21, 2026, from 4 a.m. to 11 a.m. to facilitate Miles for Moffitt. - November 26, 2026, from 6 a.m. to 9 a.m. to facilitate the YMCA Turkey Gobble. - December 13, 2026, from 6:30 a.m. to 11 a.m. to facilitate the Hot Chocolate Runs. Public vessels of the United States and vessels in distress shall be passed at any time. Valid 2026-08-24 to 2026-12-14. USCG Southeast District Local Notice to Mariners 43/2026
- FLORIDA BAY - SHELL KEY ATON / ATON Changes Location from: 24-54.49N 080-39.21W Location to: 24-54.52N 080-39.22W Aid Name: Yellow Shark Channel Buoy 24A LLNR: 12895.1 Action: RELOCATE Valid 2026-10-20 until further notice. Position 24-54.52N 080-39.22W USCG Southeast District Local Notice to Mariners 43/2026
- SECTOR CHARLESTON, SUBMERGED LAND ACT (SLA) - FOLLY RIVER ATON / ATON Changes Location: 32-37.85N 079-59.35W Aid Name: Folly River Buoy 7 LLNR: 3740 Action: RELOCATE New position: 32-37.85N 079-59.40W Valid 2026-09-28 to 2027-03-27. USCG Southeast District Local Notice to Mariners 41/2026
- LNM07-94E2F8SÉCURITÉSECTOR CHARLESTON, TERRITORIAL SEA - SECTOR CHARLESTON, SUBMERGED LAND ACT (SLA) General / Marine Construction (Excluding Bridges) / Dredging 30938 Great Lakes Dredge and Dock Company, LLC (GLDD) has completed dredging activities for the FY24 Myrtle Beach Emergency Renourishment Project, The dredges, submerged dredge pipelines (subline), booster pump and pump-out assemblies have been removed from the beach areas. Various sections of subline have been anchored off south of Little River Inlet. The sections of subline will all be floated, rafted and towed off site by the end of September 2026. The pipeline is marked per U.S.C.G. regulations. Boaters should avoid these areas. Little River Staging Area 33-51.90147N / 078-34.45133W 33-51.90979N / 078-34.41234W 33-51.36061N / 078-33.77017W 33-51.31399N / 078-33.77702W Cane South Borrow Area 33-38.79839N / 078-53.40689W 33-39.54862N / 078-52.48496W 33-38.21411N / 078-51.43486W 33-37.47282N / 078-52.29550W Surfside Borrow Area 33-32.82023N / 078-58.51570W 33-34.40117N / 078-57.20107W 33-33.69146N / 078-56.09151W 33-32.15614N / 078-57.52680W Subline 2-1 33-44.55927N / 078-48.88852W 33-43.93452N / 078-48.28760W Subline 2-2 33-43.73423N / 078-50.12075W 33-43.10958N / 078-49.51977W Subline 2-3 33-42.90920N / 078-51.13826W 33-42.33078N / 078-50.47441W Subline 2-4 33-42.06742N / 078-52.08347W 33-41.53964N / 078-51.36185W Subline 2-5 33-40.81401N / 078-53.51260W 33-40.12990N / 078-52.72720W Vessels will be monitoring VHF-FM channels 13 and 16. Mariners are urged to use extreme caution in the area. For dredging and placement operations, mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. Valid 2025-10-24 until further notice. USCG Southeast District Local Notice to Mariners 41/2026
- LNM07-E7AAE3SÉCURITÉNAVAREA IV - DISTRICT 7, OCEANIC BOUNDARY TO EEZ General / Marine Construction (Excluding Bridges) / Survey Operations 42418 Geographic Limits (WGS 84): 25-55.8297N / 080-05.5986W 25-55.0886N / 080-03.0306W 25-53.5676N / 080-00.7379W 25-48.4968N / 079-58.4025W 25-47.6777N / 079-57.1534W 25-46.5503N / 079-53.1630W 25-44.2914N / 079-50.8214W 25-41.5609N / 079-49.0514W 25-38.8241N / 079-47.1306W 25-37.2588N / 079-42.4347W Submarine cable survey operations will be conducted along the route described above. Activities will be performed by dynamically positioned research vessel OCEAN INVINCIBLE and may include slow speed transits and stationary operations. Operations are expected to begin on or about 29 April 29, 2026, with an expected completion date of May 8, 2026, 24/7, weather permitting. Mariners are advised to exercise caution while transiting the area, maintain a safe distance from the vessel and associated operations, avoid anchoring or fishing adjacent to or along the survey corridor, and monitor VHF-FM channel 16 for safety broadcasts. For further information cpntact: Sarah K. Leighton Marine Routing Specialist, SubCom Phone: +1 617 775 6109 Email: [email protected] Valid 2026-04-28 until further notice. USCG Southeast District Local Notice to Mariners 41/2026
- LNM07-2A5F14SÉCURITÉSECTOR CHARLESTON, TERRITORIAL SEA - SECTOR CHARLESTON, SUBMERGED LAND ACT (SLA) General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes 48710 Great Lakes Dredge & Dock Company, LLC (GLDD) has completed dredging activities for the next phase of FY24 Myrtle Beach Emergency Renourishment Project in Surfside and Garden City, SC. The dredges, submerged dredge pipelines (subline), booster pump and pump-out assemblies have been removed from the beach areas. Various sections of subline have been anchored off south of Little River Inlet. See attached drawing. The sections of subline will all be floated, rafted and towed off site by the end of September 2026. The pipeline is marked per U.S.C.G. regulations. Boaters should avoid these areas. Equipment: Tug Bayou Brave Tug Evergreen State Tug Cape Hatteras Derrick Barge 64 Anchor Barge Crew/Survey Vessel St Johns River & Miami River Trailing Suction Hopper Dredges Amelia Island Booster Platform Jack Locations: A. Submerged Dredge Pipe 3-1 Offshore – 33-35.95123N, 078-57.25453W; Inshore – 33-36.53762N, 078-58.03521W B. Submerged Dredge Pipe 3-2 Offshore – 33-34.51684N, 078-58.73770W; Inshore – 33-34.97945N, 078-59.50451W C. Submerged Dredge Pipe 3-3 Offshore – 33-33.55514N, 078-59.35334W; Inshore – 33-34.13119N, 079-00.28532W D. Borrow Area SW 33-32.88950N, 078-58.62019W SE 33-31.35121N, 078-56.33010W NE 33-32.93328N, 078-54.90790W NW 33-34.40101N, 078-57.20237W VHF-FM channels 13 and 16. Mariners are urged to use extreme caution in the area for dredging and placement operations, and to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. Valid 2026-07-14 until further notice. USCG Southeast District Local Notice to Mariners 41/2026
- SECTOR CHARLESTON, SUBMERGED LAND ACT (SLA) - ST SIMONS SOUND ATON / Proposed Notice of Change Location: 31-06.30N 081-27.05W Aid Name: St Simons Sound Lighted Buoy 24 LLNR: 6215 Action: RELOCATE The U.S. Coast Guard is proposing to make the following changes in the St. Simons Sound and Brunswick Point Cut Channels. The USACE will be creating a widener where these two channels intersect. In response to this project the U.S. Coast Guard will conduct the following changes to the aids to navigation constellation in this vicinity. St. Simons Sound LB 24 (LLNR 6215) will be relocated to approximate position 31-06.34N 081-26.81W. The flash characteristic will remain a Q R. Brunswick Point Cut LB 25 (LLNR 6217) will be established in approximate position 31-06.21N 081-27.08W. Lighted Buoy 25 will display a flash characteristic of a Q G. Brunswick Point Cut LB 26 (LLNR 6220) will be relocated to approximate position 31-06.37N 081-27.33W. The flash characteristic will be changed to a Fl R 2.5s. Brunswick Point Cut LB 26A (LLNR 6223) will be established in approximate position 31-06.62N 081-27.99W. Lighted Buoy 26A will display a flash characteristic of Fl R 4s. All comments should be emailed to: [email protected] or [email protected] with Brunswick Harbor Improvements as the subject line. Comments can also be mailed to: Commander (dpw), U.S. Coast Guard Southeast District, 909 SE 1st Ave (STE 406) Brickell Plaza Federal Bldg, Miami, FL. 33131-3050 to be received by October 17, 2026. Valid 2026-08-17 to 2031-07-23. USCG Southeast District Local Notice to Mariners 41/2026
- CLEARWATER PASS CHANNEL - CLEARWATER MARINA CHANNEL ATON / Advanced Notice of Change Location: 27-57.79N 082-49.15W Aid Name: Clearwater Marina Channel Light 2 LLNR: 25730 Action: CHANGE Action Type Change Light Signals The U.S. Coast Guard has approved the following changes in the Clearwater Marina Channel and Causeway Channel to improve the aids to navigation within the waterway and to create a safer transit. Clearwater Marina Channel LT 2 (LLNR 25730) will be changed to Clearwater Marina Preferred Channel LT “CM” (LLNR 25730). The new flash characteristics will be changed to a FL (2+1)R 6s and the Day Mark will show a red over green signal. Currently Clearwater Marina Channel LT 2 sits across from Clearwater Pass LT 14 (LLNR 25575) at the junction of Clearwater Marina Channel and Clearwater Pass Channel causing confusion on outbound transits from the Clearwater Pass Channel. Causeway Channel DBN 7 (LLNR 25845.5) will be changed to Causeway Preferred Channel DBN “CC” (LLNR 25845.5). The Day Mark will show a green over red signal. Causeway Channel DBN 7 is currently aligned with red lateral aids marking the Clearwater Marina Channel and causes confusion on inbound transits of the Clearwater Marina Channel. Converting these aids to a “preferred” channel mark will alleviate any confusion for the mariner while transiting through the Clearwater Marina Channel, Clearwater Pass Channel, and the Causeway Channel. Valid 2026-01-16 until further notice. USCG Southeast District Local Notice to Mariners 41/2026
- MULLET KEY CHANNEL - POINT PINELLAS CHANNEL ATON / Advanced Notice of Change 47143 Location: 27-43.89N 082-36.66W Aid Name: Point Pinellas Channel Light 9 LLNR: 24735.1 Action: CHANGE Action Type Change Aid Subtype The following changes have been approved to the aids to navigation system on the Pinellas Point Channel. Point Pinellas Channel LT 9 (LLNR 24735.1) will be converted to Point Pinellas Channel LB 9 (LLNR 24735). Point Pinellas Channel LT 10 (LLNR 24735.2) will be permanently discontinued. The two lights have experienced several allisions resulting in both lights being out of service for extended periods of time and being replaced by a small lighted temporary buoy. In addition, the depth of water in these locations exceeds the maximum water depth that a U.S. Coast Guard asset can safely rebuild the lights. Given these conditions the channel will be better served with one lighted buoy in this location. Valid 2026-06-24 until further notice. USCG Southeast District Local Notice to Mariners 41/2026
- ST SIMONS SOUND - BRUNSWICK RIVER ATON / Proposed Notice of Change Location: 31-06.62N 081-27.99W Aid Name: Brunswick Point Cut Lighted Buoy 26A LLNR: Not Provided Action: ESTABLISH The U.S. Coast Guard is proposing to make the following changes in the St. Simons Sound and Brunswick Point Cut Channels. The USACE will be creating a widener where these two channels intersect. In response to this project the U.S. Coast Guard will conduct the following changes to the aids to navigation constellation in this vicinity. St. Simons Sound LB 24 (LLNR 6215) will be relocated to approximate position 31-06.34N 081-26.81W. The flash characteristic will remain a Q R. Brunswick Point Cut LB 25 (LLNR 6217) will be established in approximate position 31-06.21N 081-27.08W. Lighted Buoy 25 will display a flash characteristic of a Q G. Brunswick Point Cut LB 26 (LLNR 6220) will be relocated to approximate position 31-06.37N 081-27.33W. The flash characteristic will be changed to a Fl R 2.5s. Brunswick Point Cut LB 26A (LLNR 6223) will be established in approximate position 31-06.62N 081-27.99W. Lighted Buoy 26A will display a flash characteristic of Fl R 4s. All comments should be emailed to: [email protected] or [email protected] with Brunswick Harbor Improvements as the subject line. Comments can also be mailed to: Commander (dpw), U.S. Coast Guard Southeast District, 909 SE 1st Ave (STE 406) Brickell Plaza Federal Bldg, Miami, FL. 33131-3050 to be received by October 17, 2026. Valid 2026-08-17 to 2031-07-23. USCG Southeast District Local Notice to Mariners 41/2026
- LNM07-B8F57DPAN PANSECTOR KEY WEST, TERRITORIAL SEA - SECTOR KEY WEST, SUBMERGED LAND ACT (SLA) General / Naval Activity / Military Operations Location: 24-35.73N 081-47.59W 24-33.98N 081-47.59W 24-34.08N 081-48.12W 24-33.87N 081-48.39W 24-33.34N 081-48.64W 24-32.73N 081-48.76W 24-32.72N 081-48.90W 24-35.63N 081-48.30W 24-35.73N 081-47.59W The US Navy will be conducting dive operations during the following dates and times. All support vessels will be monitoring VHF-FM channels 16 and 81A. They will have multiple boats plus jet skis to deconflict with mariners and provide diver support and protection. On Thursday (August 13, September 10, October 8, 2026) they will be conducting day into night dive operations from (0800) to (1159), at Fleming Key Cut and Man of War Harbor. Divers will be confined to transiting through the cut on only one side, leaving the other side open. Additionally On Thursday (August 13, September 10, October 8, 2026) they will be conducting dive operations from (0800-1159) along the Southwest edge of Flemming key into Key West Harbor, Naval Restricted Area #4. Divers will be no farther from shore than 50m and should pose a minimal obstruction to routine navigational operations. Depending on the weather and sea state, we may shift operations along the eastern side of Flemming Key staying west of Key West Harbor Garrison Channel. Divers will be no farther from shore than 50m and should pose a minimal obstruction to routine navigational operations. On Monday (August 17, September 14, October 12, 2026) they will be conducting day dive operations from (0800) to (1159), in vicinity of Fort Zachery Taylor State Park and Key West Harbor Channel. Divers will be no farther from shore than 50m and should pose a minimal obstruction to routine navigational operations. Additionally, divers will remain less than 25m from shore when parallelling the Key West Harbor Channel. On Tuesday (August 18, September 15, October 13, 2026) they will be conducting dive operations from (0800-1159) in vicinity of Star Island (Green Bouy 19), Key West Naval Harbor Restricted Area #2, Key West Main Channel Lighted Bouy 15. We are splashing divers at Key West Main Channel Lighted Bouy 15 they are then going to transit along the west side of Key West Naval Harbor Restricted Area #2. then across the Key West Main Channel to Daybeacon 2. On Wednesday (August 19, September 16, October 14, 2026) they will be conducting day into night dive operations from (0800-1159), in Vicinity of Flemming Key (West and East Side), Flemming Key Cut, Man of War Harbor, Key West Harbor Garrison Channel, Garrison Bight Channel Inlet, Key West Harbor Channel, and Key West Harbor Channel Turning Basin. On Thursday (August 20, 2026, September 17, October 15, 2026) they will be conducting dive operations from (0800-1159) in vicinity of Fort Zachery Taylor State Park Beach and Key West Harbor Channel. Divers will be no farther from shore than 50m and should pose a minimal obstruction to routine navigational operations. Additionally, divers will remain less than 25m from shore when parallelling the Key West Harbor Channel while heading South and East in between shore and Fort Taylor West Obstruction Light. Valid 2026-08-19 to 2026-10-16. USCG Southeast District Local Notice to Mariners 41/2026
- LAKE WORTH SOUTH General / Bridges Location: 26-36.92N 080-02.62W Bridge Name: Lake Avenue Bridge The bridge need not open to navigation, including tugs with tows, from 6:45 a.m. to 10 a.m. on Sunday, October 18, 2026, to facilitate the City of Lake Worth 28th Annual Bill Bone Tropical Triathlon. Public vessels of the United States and vessels in distress shall be passed at any time. Valid 2026-10-08 to 2026-10-19. USCG Southeast District Local Notice to Mariners 41/2026
- SAN CARLOS BAY General / Bridges / Construction Location: 26-24.26N 081-52.86W Bridge Name: Big Carlos Pass Bridge - Big Carlos Pass UPDATE 12/3/2025 - Marine traffic will be shifted to the new navigation channel on 12/5/2025. The new navigation clearances are a fixed vertical clearance of 60 feet at mean high water and a horizontal clearance of 139 feet between the pier supports. Passage through the bascule spans will be discontinued. Mariners are advised to transit the new channel with caution. The existing bascule bridge will be replaced with a higher-level fixed bridge. In-water work is expected through December 2026. A temporary work trestle will be installed oceanward of the bridge and will span the waterway except across the main navigational channel. The work trestle will provide only 5 feet of vertical clearance throughout the structure. The installation of girder beams will set a permanent fixed/limited vertical clearance of 49 feet at mean high water across the navigational channel. Temporary bridge lighting will be installed on the new structure. The drawbridge will remain fully operational. All mariners are requested to use extreme caution and proceed at slow speed when transiting Big Carlos Pass and remain in the main channel when proceeding through the bridge. All in-water equipment is required to be lighted at night. Valid 2024-11-12 to 2026-12-31. USCG Southeast District Local Notice to Mariners 41/2026
- BISCAYNE BAY General / Bridges / Temp Deviation Location: 25-46.19N 080-11.41W Bridge Name: Brickell Avenue Bridge The bridge need not open to navigation, including tugs and tugs with tows, from 5 p.m. until 8 p.m. on Thursday, October 22, 2026, to assist with vehicle traffic in support of the Latin Billboard Awards. Public vessels of the United States and vessels in distress shall be passed at any time. Valid 2026-08-26 to 2026-10-23. USCG Southeast District Local Notice to Mariners 41/2026
- SECTOR CHARLESTON, SUBMERGED LAND ACT (SLA) - ST SIMONS SOUND ATON / Proposed Notice of Change Location: 31-06.62N 081-27.99W Aid Name: Brunswick Point Cut Lighted Buoy 26 LLNR: 6220 Action: RELOCATE The U.S. Coast Guard is proposing to make the following changes in the St. Simons Sound and Brunswick Point Cut Channels. The USACE will be creating a widener where these two channels intersect. In response to this project the U.S. Coast Guard will conduct the following changes to the aids to navigation constellation in this vicinity. St. Simons Sound LB 24 (LLNR 6215) will be relocated to approximate position 31-06.34N 081-26.81W. The flash characteristic will remain a Q R. Brunswick Point Cut LB 25 (LLNR 6217) will be established in approximate position 31-06.21N 081-27.08W. Lighted Buoy 25 will display a flash characteristic of a Q G. Brunswick Point Cut LB 26 (LLNR 6220) will be relocated to approximate position 31-06.37N 081-27.33W. The flash characteristic will be changed to a Fl R 2.5s. Brunswick Point Cut LB 26A (LLNR 6223) will be established in approximate position 31-06.62N 081-27.99W. Lighted Buoy 26A will display a flash characteristic of Fl R 4s. All comments should be emailed to: [email protected] or [email protected] with Brunswick Harbor Improvements as the subject line. Comments can also be mailed to: Commander (dpw), U.S. Coast Guard Southeast District, 909 SE 1st Ave (STE 406) Brickell Plaza Federal Bldg, Miami, FL. 33131-3050 to be received by October 17, 2026. Valid 2026-08-17 to 2031-07-23. USCG Southeast District Local Notice to Mariners 41/2026
- SKULL CREEK General / Bridges Location: 32-13.49N 080-46.91W Bridge Name: United States 278 Highway Bridge The southern section of the fender system is damaged and missing. Mariners are advised to transit the area with caution. Valid 2026-04-30 to 2026-10-27. USCG Southeast District Local Notice to Mariners 41/2026
- LNM07-1A1570SÉCURITÉFOLLY RIVER - STONO RIVER General / Marine Construction (Excluding Bridges) / Dredging Location: 32-47.06N 080-06.62W 32-47.02N 080-06.53W 32-46.97N 080-06.59W 32-46.92N 080-06.75W 32-46.91N 080-06.80W 32-46.86N 080-06.93W 32-46.78N 080-07.15W 32-46.77N 080-07.25W 32-46.74N 080-07.35W 32-46.70N 080-07.44W 32-46.77N 080-07.47W 32-46.79N 080-07.40W 32-46.83N 080-07.24W 32-46.85N 080-07.14W 32-46.88N 080-06.99W 32-47.06N 080-06.62W Cottrell Contracting Corporation of Chesapeake, Virginia advises that the DREDGE NEWMARKET will be conducting dredging operations in the Atlantic Intracoastal Waterway (AIWW) in the vicinity of Rantowles Creek, Johns Island, SC. The dredge will be working from approximately coordinates 32-46.982N / 08O-06.721W, which is approximately 1,000 feet Northeast of the Stono River Light 39, to the Stono River Daybeacon 41 (32-46. 760N / 080-07 .319W). The work will be ongoing from August 26, 2026, through September 30, 2026. All mariners are requested to stay clear of the dredge, pipelines, barge, derricks and operating wires about the dredge. All operators should be aware that the dredge and pontoon lines are held in place by cables, which are attached to anchors some distance from the dredge and pontoons. Buoys are attached to the anchors so that they may be moved as the dredge moves. Submerged lines should be avoided. Mariners are requested to exercise extreme caution when approaching, passing, and leaving the dredging plant. The dredge Newmarket monitors VHF-FM channels 13 and 16. Mariners are cautioned to strictly comply with the Inland Rules of the Road when approaching, passing and leaving the area of operations, and remain a safe distance away from the dredge, booster, buoys, cables, pipeline, barges, derricks, wires and related equipment. Owners and lessees of fishnets, crab pots and other structures that may be in the vicinity and that may hinder the free navigation of attending vessels and equipment must remove these from the area where tugs, tender boats and other attendant equipment will be navigating. Dredging operations will be conducted twenty-four (24) hours a day seven (7) days a week, all fishnets, crab pots and structures in the general area must be removed prior to commencement of any work, a slow NO WAKE speed is requested of transiting vessels. All vessels are requested to contact the dredge prior to passing. Valid 2026-08-20 to 2026-10-23. USCG Southeast District Local Notice to Mariners 41/2026
- LNM07-220FB4SÉCURITÉOGLETHORPE RANGE - KINGS ISLAND TURNING BASIN General / Marine Construction (Excluding Bridges) / Dredging 41867 Marinex Construction, Inc. has shifted the DREDGE HAMPTON ROADS to the Savannah River near Sharks Tooth Beach. Their current orders of work will have them dredging the channel, along side Sharks Tooth Beach from, 32-08.17N 081-08.47W to 32-08.54N 081-08.52W. Their estimated completion date for that section is TBD. Operations will continue 24/7. The dredge will monitor VHF-FM channels 13 and 16. Valid 2026-04-22 until further notice. USCG Southeast District Local Notice to Mariners 41/2026
- CHARLESTON HARBOR - COOPER RIVER ATON / Proposed Notice of Change ATON/Proposed Notice of Change Location: 32-56.42N 079-55.42W Aid Name: Cooper River Range D Rear Light LLNR: 3045 Action: RELOCATE The U.S. Coast Guard is proposing the following changes to the Aids to Navigation System in the Cooper River: Cooper River Range D Rear Light (LLNR 3045) will be permanently relocated to approximate position 32-56.45N 079-55.35W. Cooper River Range D/F Front Light (LLNR 3040) will have the flash characteristic changed from a Q W to a FL W 2.5s. The light will continue to be an all-around light. Due to the current location of Cooper River Range D Rear Light (LLNR 30465) being inaccessible for a Coast Guard asset to effectively repair the structure, it was determined by relocating the rear range approximately 400 feet further from its current location will offer a much improved range quality and allow CG personnel to service at any tidal state. All comments should be emailed to: [email protected] or [email protected] with Cooper River Range D/F as the subject line. Comments can also be mailed to Commander (dpw), Seventh Coast Guard District, 909 SE 1st Ave (STE 406) Brickell Plaza Federal Building, Miami, FL. 33131-3050 to be received by March 16, 2026. USCG Southeast District Local Notice to Mariners 41/2026
- MATHENY CREEK General / Bridges Location: 27-18.16N 082-32.72W Bridge Name: Siesta Drive Bridge The bridge will operate as follows from August 10, 2026, through October 16, 2026: - From 7 a.m. to 7 p.m. Monday through Friday, a single-leaf opening will be provided per the specific operating requirement. A full opening will be provided with a 4-hour advance notice. - At all other times, the drawbridge will operate normally. A containment system will be installed on the underside of the drawbridge across the navigation channel. This will reduce the vertical clearance to 18 feet. Valid 2026-08-06 to 2026-10-17. USCG Southeast District Local Notice to Mariners 41/2026
- SECTOR CHARLESTON, SUBMERGED LAND ACT (SLA) - FOLLY RIVER ATON / ATON Changes Location: 32-37.71N 079-59.33W Aid Name: Folly River Lighted Buoy 2 LLNR: 3734 Action: RELOCATE New position: 32-37.68N 079-59.35W Valid 2026-09-28 to 2027-03-27. USCG Southeast District Local Notice to Mariners 41/2026
- CHARLESTON HARBOR - COOPER RIVER ATON / Proposed Notice of Change ATON/Proposed Notice of Change Location: 32-56.39N 079-55.48W Aid Name: Cooper River Range D/F Front Light LLNR: 3040 Action: CHANGE Action Type Change Light Signals The U.S. Coast Guard is proposing the following changes to the Aids to Navigation System in the Cooper River: Cooper River Range D Rear Light (LLNR 3045) will be permanently relocated to approximate position 32-56.45N 079-55.35W. Cooper River Range D/F Front Light (LLNR 3040) will have the flash characteristic changed from a Q W to a FL W 2.5s. The light will continue to be an all-around light. Due to the current location of Cooper River Range D Rear Light (LLNR 30465) being inaccessible for a Coast Guard asset to effectively repair the structure, it was determined by relocating the rear range approximately 400 feet further from its current location will offer a much improved range quality and allow CG personnel to service at any tidal state. All comments should be emailed to: [email protected] or [email protected] with Cooper River Range D/F as the subject line. Comments can also be mailed to Commander (dpw), Seventh Coast Guard District, 909 SE 1st Ave (STE 406) Brickell Plaza Federal Building, Miami, FL. 33131-3050 to be received by March 16, 2026. USCG Southeast District Local Notice to Mariners 41/2026
- ST SIMONS SOUND - BRUNSWICK RIVER ATON / Proposed Notice of Change Location: 31-06.21N 081-27.08W Aid Name: Brunswick Point Cut Lighted Buoy 25 LLNR: Not Provided Action: ESTABLISH The U.S. Coast Guard is proposing to make the following changes in the St. Simons Sound and Brunswick Point Cut Channels. The USACE will be creating a widener where these two channels intersect. In response to this project the U.S. Coast Guard will conduct the following changes to the aids to navigation constellation in this vicinity. St. Simons Sound LB 24 (LLNR 6215) will be relocated to approximate position 31-06.34N 081-26.81W. The flash characteristic will remain a Q R. Brunswick Point Cut LB 25 (LLNR 6217) will be established in approximate position 31-06.21N 081-27.08W. Lighted Buoy 25 will display a flash characteristic of a Q G. Brunswick Point Cut LB 26 (LLNR 6220) will be relocated to approximate position 31-06.37N 081-27.33W. The flash characteristic will be changed to a Fl R 2.5s. Brunswick Point Cut LB 26A (LLNR 6223) will be established in approximate position 31-06.62N 081-27.99W. Lighted Buoy 26A will display a flash characteristic of Fl R 4s. All comments should be emailed to: [email protected] or [email protected] with Brunswick Harbor Improvements as the subject line. Comments can also be mailed to: Commander (dpw), U.S. Coast Guard Southeast District, 909 SE 1st Ave (STE 406) Brickell Plaza Federal Bldg, Miami, FL. 33131-3050 to be received by October 17, 2026. Valid 2026-08-17 to 2031-07-23. USCG Southeast District Local Notice to Mariners 41/2026
- BISCAYNE BAY General / Bridges / Temp Deviation Location: 25-46.18N 080-11.61W Bridge Name: South Miami Avenue Bridge The bridge need not open to navigation, including tugs and tugs with tows, on Thursday, October 22, 2026, from 5 p.m. until 8 p.m. Vessels able to pass without an opening may do so at any time. Valid 2026-08-27 to 2026-10-23. USCG Southeast District Local Notice to Mariners 41/2026
- LEMON BAY CHANNEL General / Bridges Location: 26-55.86N 082-20.20W Bridge Name: Placida Road Bridge - Rock Creek The southern span is closed to navigation for repairs to the bridge structure. All marine traffic should utilized the northern span. The county has placed buoys, a turbidity curtain and signage across the southern span alerting mariners of the closure. All mariners are advised to transit the area with caution. Valid 2026-04-28 to 2026-10-25. USCG Southeast District Local Notice to Mariners 41/2026
- SECTOR CHARLESTON, SUBMERGED LAND ACT (SLA) - FOLLY RIVER ATON / ATON Changes Location: 32-37.85N 079-59.30W Aid Name: Folly River Buoy 4 LLNR: 3735.1 Action: RELOCATE New position: 32-37.85N 079-59.35W Valid 2026-09-28 to 2027-03-27. USCG Southeast District Local Notice to Mariners 41/2026
- BISCAYNE BAY General / Bridges Location: 25-47.04N 080-13.11W Bridge Name: 836 Double-Decked State Route Bridge Construction continues on the double-decked bridge. Gantry operations are expected to begin across the Miami River starting April 24, 2026 and last through September 30, 2026. Impacts to navigation are not anticipated, however, overnight waterway closures may be necessary. The Coast Guard will provide advanced notice if impacts to navigation are expected. Beginning late August 2026, the fender system will be replaced. The navigation channel will be partially obstructed with in-water equipment. Future updates will be made with dates/times for waterway impacts. Valid 2026-04-24 to 2027-10-21. USCG Southeast District Local Notice to Mariners 41/2026
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