Coastal
US Coast Guard LNM - Northwest District (D13)
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- LNM13-095CC8SÉCURITÉCOLUMBIA RIVER - VANCOUVER TO BONNEVILLE General / Marine Construction (Excluding Bridges) / Dredging The M/V YAQUINA may be conducting dredging activities in the Columbia River, Lower Vancouver Bar and Vancouver Turning Basin (RM 103+00 to RM 105+20) from 05 – 12 Nov 2026. Disposal will be at (RM 101 WA side). USACE requests mariners transit at their slowest safe speed to minimize wake when in the vicinity of a dredge and proceed with caution after passing arrangements have been made on VHF-FM channel 13. Vessel(s) and/or equipment may encroach into the channel. Mariners are advised that the start and ending dates for dredging activities may vary due to unforeseen on-site conditions, such as gill net fishing, weather and other factors. USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-F01B2FPAN PANNAVAREA XII - District 13, Oceanic boundary to EEZ / Space Operations / Hazardous Warning Area / Commercial (Hazardous) Hazardous operations, including the trunk hazard ascending, will be conducted for SpaceX CRS- 35 reentry with a splashdown in the Pacific Ocean from 180700Z NOV 2026 to 280355Z NOV 2026. Hazardous operation areas are bounded by the following coordinates: Trunk Hazard Area: 37-20.00N 124-21.00W 38-00.00N 126-25.00W 40-18.00N 130-19.00W 43-20.00N 136-27.00W 44-42.00N 135-21.00W 41-36.00N 129-08.00W 39-15.00N 125-12.00W 37-45.00N 123-56.00W 37-20.00N 124-21.00W (TO BEGINNING) The identified locations above are designated a hazardous warning area(s) for space vehicle reentry. A space vehicle may reenter within this/these area(s) between the dates and times listed. The U.S. Coast guard is establishing this/these hazardous warning area(s) to protect vessels and waterway users from the potential hazards created by reentry vehicle splashdowns and recovery operations. The U.S. Coast guard is providing this notice to advise mariners of this/these hazardous area(s) which may impact navigation interests. Navigations hazards from space capsule reentry activities may include free falling debris and/or descending vehicles or vehicle components under various means of control. Mariners are urged to avoid the reentry sites during reentry windows as detailed above. For more details or comments contact Space X at [email protected] or on VHF-FM Chan. 05, 06 or 16 USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-7845D6PAN PANNAVAREA XII - District 13, Oceanic boundary to EEZ / Space Operations / Hazardous Warning Area / Commercial (Hazardous) Hazardous operations, including the trunk hazard ascending, will be conducted for SpaceX CRS- 35 reentry with a splashdown in the Pacific Ocean from 180700Z NOV 2026 to 280350Z NOV 2026 Hazardous operation areas are bounded by the following coordinates: Trunk Hazard Area: 37-42.00N 124-28.00W 38-22.00N 126-32.00W 40-39.00N 130-29.00W 43-38.00N 136-41.00W 45-00.00N 135-36.00W 41-57.00N 129-19.00W 39-37.00N 125-20.00W 38-08.00N 124-03.00W 37-42.00N 124-28.00W (TO BEGINNING) The identified locations above are designated a hazardous warning area(s) for space vehicle reentry. A space vehicle may reenter within this/these area(s) between the dates and times listed. The U.S. Coast guard is establishing this/these hazardous warning area(s) to protect vessels and waterway users from the potential hazards created by reentry vehicle splashdowns and recovery operations. The U.S. Coast guard is providing this notice to advise mariners of this/these hazardous area(s) which may impact navigation interests. Navigations hazards from space capsule reentry activities may include free falling debris and/or descending vehicles or vehicle components under various means of control. Mariners are urged to avoid the reentry sites during reentry windows as detailed above. For more details or comments contact Space X at [email protected] or on VHF-FM Chan. 05, 06 or 16 USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-DE0D51PAN PANDISTRICT 13, OCEANIC BOUNDARY TO EEZ - SECTOR COLUMBIA RIVER, EXCLUSIVE ECONOMIC ZONE (EEZ) General / Naval Activity / Naval Gunnery Exercises LIVE FIRE EXERCISES WILL BE CONDUCTED IN OPERATING AREAS W-237- A, C, D, F AND G, CENTERED IN APPROXIMATE POSITION 47-00.00N 126-15.00W, FROM 1000 UNTIL 1400 LOCAL FROM 16 – 20 NOV 26. VESSEL TRAFFIC IN THE VICINITY ARE REQUESTED TO MAINTAIN A 5 NM DISTANCE AND TO CONTACT VAQ 134 ON VHF-FM CHANNELS 16 OR 13. USCG Northwest District Local Notice to Mariners 45/2026
- LOWER MONUMENTAL General / Bridges The Coast Guard intends to approve a temporary bridge deviation from the operating schedule that governs the Camas Prairie Railroad Bridge (BRDG UID 30149) across the Clearwater River at mile 0.6 in Lewiston, ID. This deviation will support mechanical repairs from 0600 on 07 December 2026 to 1800 on 8 December 2026. The Camas Prairie Bridge provides 7 feet of vertical clearance in the closed-to-navigation position at high water. The subject bridge will not be able to open for emergency vessels responding to emergencies. No alternate route is available for vessels to use during this part of the waterway. If any mariner cannot support this deviation request, please submit comments by 25 November 2026 at [email protected]. For more information on this event contact Mike McDermott at 563-581-3250 or email [email protected]. Position 46-25.55N 117-01.57W USCG Northwest District Local Notice to Mariners 45/2026
- LOWER MONUMENTAL General / Bridges The Coast Guard intends to approve a temporary bridge deviation from the operating schedule that governs the Camas Prairie Railroad Bridge (BRDG UID 30149) across the Clearwater River at mile 0.6 in Lewiston, ID. This deviation will support mechanical repairs from 0600 on 14 December 2026 to 1800 on 15 December 2026. The Camas Prairie Bridge provides 7 feet of vertical clearance in the closed-to-navigation position at high water. The subject bridge will not be able to open for emergency vessels responding to emergencies. No alternate route is available for vessels to use during this part of the waterway. If any mariner cannot support this deviation request, please submit comments by 25 November 2026 at [email protected]. For more information on this event contact Mike McDermott at 563-581-3250 or email [email protected]. Position 46-25.55N 117-01.57W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-3B7F66SÉCURITÉCOLUMBIA RIVER - PUGET ISLAND General / Marine Construction (Excluding Bridges) / Dredging The M/V ESSAYONS may be conducting dredging activities in the Columbia River, Puget Island Bar (RM 37+35 to RM 39+10) from 05 – 10 Nov 2026. Disposal will be at (RM 28 OR side). USACE requests mariners transit at their slowest safe speed to minimize wake when in the vicinity of a dredge and proceed with caution after passing arrangements have been made on VHF-FM channel 13. Vessel(s) and/or equipment may encroach into the channel. Mariners are advised that the start and ending dates for dredging activities may vary due to unforeseen on-site conditions, such as gill net fishing, weather and other factors. Position 46-12.45N 123-25.58W USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - MILLER SANDS General / Miscellaneous Orion Marine Group (OMG) will be conducting pile driving and enrockment activities near Columbia River Marker Pile #23 and #24 from 23 Nov 2026 – 28 Feb 2027. ABS barges Ellis Island and San Clemente will be onsite and can be hailed on VHF channel 72. Barges may be onsite overnight and will be marked with all-round white lights. Mariners are requested to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. For additional information, contact Emeri Wilson at 503-994-6157 or email [email protected]. Position 46-15.88N 123-39.85W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-ECE03ASÉCURITÉCOLUMBIA RIVER - WESTPORT General / Marine Construction (Excluding Bridges) / Dredging HME will be performing dredging operations near Wahkiakum Ferry Channel, Columbia River (RM 43.2) from 10 – 15 Nov 2026, working 7 days a week 24 hours a day. Dredge spoils will be transported downstream to (RM 40.4). Vessels include Tug “Terilyn” and support Tug “Douglas”, a dump scow “Sea Horse” and one split-hull dump scow. Vessels will be monitoring VHF Channels 13 and 16 sith working channel VHF 67, 68, or 69. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. For additional information, please contact HME Project Manager at 503-250-1827 or 360-904-2978. USACE Contracting Officers Representative is Nathan Miller, 360-899-8223. Position 46-08.98N 123-22.18W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-16A6E2SÉCURITÉCOLUMBIA RIVER - WESTPORT General / Marine Construction (Excluding Bridges) / Dredging The M/V ESSAYONS may be conducting dredging activities in the Columbia River, Westport Bar/Eureka Bar (RM 46+45 to RM 48+45) from 05 – 10 Nov 2026. Disposal will be at (RM 45 WA side). USACE requests mariners transit at their slowest safe speed to minimize wake when in the vicinity of a dredge and proceed with caution after passing arrangements have been made on VHF-FM channel 13. Vessel(s) and/or equipment may encroach into the channel. Mariners are advised that the start and ending dates for dredging activities may vary due to unforeseen on-site conditions, such as gill net fishing, weather and other factors. Position 46-08.53N 123-19.02W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-65C59BSÉCURITÉCRIMS ISLAND TO ST HELENS - MARTIN ISLAND General / Marine Construction (Excluding Bridges) / Dredging The M/V YAQUINA may be conducting dredging activities in the Columbia River, Eureka Bar/Gull Island (RM 78+50 to RM 81+00) from 05 – 12 Nov 2026. Disposal will be at (RM 53 WA side). USACE requests mariners transit at their slowest safe speed to minimize wake when in the vicinity of a dredge and proceed with caution after passing arrangements have been made on VHF-FM channel 13. Vessel(s) and/or equipment may encroach into the channel. Mariners are advised that the start and ending dates for dredging activities may vary due to unforeseen on-site conditions, such as gill net fishing, weather and other factors. USCG Northwest District Local Notice to Mariners 45/2026
- SNOHOMISH RIVER General / Bridges WASHINGTON – EVERETT HARBOR – SNOHOMISH RIVER – BNSF Bridge Notice The Coast Guard has approved a temporary bridge deviation from the operating schedule that governs the BNSF Bridge 38.3 Bridge (BRDG UID 29759) across Ebey Slough at mile 1.5. This deviation will support mechanical repairs from 0800 on 02 November 2026 to 1500 on 18 November 2026. BNSF Bridge 38.3 provides 5 feet of vertical clearance in the closed-to-navigation position at high tide. The subject bridge will not be able to open for emergency vessels responding to emergencies. An alternate route for vessels to use during this deviation period is via Union Slough. For more information on this event contact Michael Walsh at 402-937-2013 or email at [email protected]. Position 48-02.83N 122-10.85W USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - LAKE WALLULA General / Miscellaneous McNary Dam (RM 292) on the Columbia River will be having slower than normal lockage openings beginning 05 November 2026 until further notice due to a broken hydraulic line and issues with the valve hydraulic power unit. Upstream lockage's will require an additional 15-20 minutes to complete. For additional information, contact McNary Chief Operator at 541-922-2231, Call Sign: WUJ41 or NWW Operations Division at 509-527-7364. Position 45-55.72N 119-17.68W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-22450DSÉCURITÉCOLUMBIA RIVER - NORTH PORTLAND HARBOR General / Marine Construction (Excluding Bridges) / Dredging HME will be performing dredging operations near CBC East Barge Slip, Columbia River (RM 108) from 15 Nov – 01 Dec 2026, working 7 days a week from 0600-1800. Dredging side at 45-36.67N 122-36.20W. Dredge spoils will be transported downstream to (RM 109.6). Vessels include Tug “Husky” and support Tug “St. Helens”, a dump scow “Sea Vulture” and one split-hull dump scow. Vessels will be monitoring VHF Channels 13 and 16, with working channel VHF 67, 68, or 69. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. For additional information, please contact HME Project Manager at 503-250-1827 or 360-904-2978. Position 45-36.67N 122-38.57W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-B04DBFPAN PANNAVAREA XII - District 13, Oceanic boundary to EEZ / Space Operations / Hazardous Warning Area / Commercial (Hazardous) Hazardous operations, including the trunk hazard ascending, will be conducted for SpaceX CRS- 35 reentry with a splashdown in the Pacific Ocean from 180700Z NOV 2026 to 280355Z NOV 2026 Hazardous operation areas are bounded by the following coordinates: Trunk Hazard Area: 38-19.00N 125-59.00W 38-57.00N 128-05.00W 41-11.00N 132-05.00W 44-07.00N 138-25.00W 45-30.00N 137-21.00W 42-30.00N 130-55.00W 40-13.00N 126-53.00W 38-44.00N 125-34.00W 38-19.00N 125-59.00W (TO BEGINNING) The identified locations above are designated a hazardous warning area(s) for space vehicle reentry. A space vehicle may reenter within this/these area(s) between the dates and times listed. The U.S. Coast guard is establishing this/these hazardous warning area(s) to protect vessels and waterway users from the potential hazards created by reentry vehicle splashdowns and recovery operations. The U.S. Coast guard is providing this notice to advise mariners of this/these hazardous area(s) which may impact navigation interests. Navigations hazards from space capsule reentry activities may include free falling debris and/or descending vehicles or vehicle components under various means of control. Mariners are urged to avoid the reentry sites during reentry windows as detailed above. For more details or comments contact Space X at [email protected] or on VHF-FM Chan. 05, 06 or 16 USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-CBAB91SÉCURITÉCRIMS ISLAND TO ST HELENS - LONGVIEW General / Marine Construction (Excluding Bridges) / Dredging The Dredge Oregon under contract with the Port of Portland will perform maintenance dredging near the Columbia River at the Mouth of the Cowlitz River from 12 November 2026 – 31 January 2027. Dredging operations will occur near the navigational channel with placement on Howard Island. Dredge Oregon, along with workboats Clackamas, Ivanhoff, and Cowlitz will be monitoring VHF-FM Channels 13 and 16. Mariners are requested to contact the dredge to make passing arrangements and proceed with caution at their slowest safe speed to minimize wakes. For additional information, contact dredge personnel at (503) 369-1505 or (503) 789-7238. Position 46-05.60N 122-55.17W USCG Northwest District Local Notice to Mariners 45/2026
- DISTRICT 13, OCEANIC BOUNDARY TO EEZ - SECTOR COLUMBIA RIVER, EXCLUSIVE ECONOMIC ZONE (EEZ) General / Miscellaneous The Tillamook UAS Test Range will be conducting operations in W-570 airspace on 17 – 20 Nov 2026. Operations include the launch and recovery of various unmanned aircraft and flight testing in several locations within area W-570 including an operational area approximately 15 – 30 nautical miles west of Tillamook, centered on 45-23.78N 124-33.54W. Mariners should use caution when transiting this area. For more information, mariners can call Chris Strole, Tillamook Test Range Manager at (503) 944-1190 (Office) or (725) 577-2082 (Cell). Position 45-23.78N 124-33.53W USCG Northwest District Local Notice to Mariners 45/2026
- BONNEVILLE POOL General / Bridges All navigation lights are extinguished. The deck lights are watching properly. The bridge needs new electrical wiring and the navigation lights will be extinguished UFN. Temporary navigation lights may be installed at a later date. Position 45-39.73N 121-54.03W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-64DB8ASÉCURITÉCRIMS ISLAND TO ST HELENS - LONGVIEW General / Marine Construction (Excluding Bridges) / Dredging HME will be performing dredging operations near Port of Longview on the Columbia River (RM 65+52 through 67+00 and RM 58) from 07 – 31 Dec 2027, working 7 days a week 24 hours a day. Vessels include Tug “Terilyn” and a dump scow “Robert L” and “WJ Marston”, monitoring VHF Channels 13 and 16. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. For additional information, please contact USACE Contracting Officers Representative is Nathan Miller, 360-899-8223. USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-6DD340SÉCURITÉMILLER SANDS - PILLAR ROCK General / Marine Construction (Excluding Bridges) / Dredging The M/V ESSAYONS may be conducting dredging activities in the Columbia River, Pillar Rock/Brookfield-Welch Island (RM 27+50 to RM 32+23) from 03 – 10 Nov 2026. Disposal will be at RM 28 OR side. USACE requests mariners transit at their slowest safe speed to minimize wake when in the vicinity of a dredge and proceed with caution after passing arrangements have been made on VHF-FM channel 13. Vessel(s) and/or equipment may encroach into the channel. Mariners are advised that the start and ending dates for dredging activities may vary due to unforeseen on-site conditions, such as gill net fishing, weather and other factors. USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA General / LAA / RNA / Safety Zone * City of Richland Lighted Boat Parade Fireworks * December 5, 2026; 7:00 p.m. - 9:30 p.m. Fireworks display launched from land over approximate location 46°16′29″ N, 119°16′10″ W. A safety zone, which is needed to protect personnel, vessels, and the marine environment in the navigable waters, will be covering all navigable waters within a 450-yard radius of the launch site and will be in effect during this time. All vessel operators who desire to enter the safety zone must obtain permission from the Captain of the Port or Designated Representative by contacting either the on-scene patrol craft on VHF Ch 13 or Ch 16 or the Coast Guard Sector Columbia River Command Center via telephone at 1-(833) 769-8724. Position 46-16.48N 119-16.17W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-5C4A3FSÉCURITÉPOSSESSION SOUND - SNOHOMISH RIVER General / Marine Construction (Excluding Bridges) / Dredging American Construction Company will be conducting dredging operations in the Snohomish River in Everett, WA from 04 January - 14 February 2027. Work includes dredging from the Port fo Everett North Marina area A and B, operating up to 24-hours per day, seven days a week. Working vessels include a clamshell dredge, M/V Mukilteo to dredge and M/V Lummi to load the split-hull scows. The scows will be towed to the DNR Port Gardner disposal site (47-58.86’N, 122-16.74’W). Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made with the Tug Captain. Working vessels will be monitoring VHF-FM channels 13 and 16. For additional information, contact Aaron McMahill at (253) 350-1670, [email protected]. Position 48-00.13N 122-13.32W USCG Northwest District Local Notice to Mariners 45/2026
- UNION BAY REACH - LAKE WASHINGTON General / Bridges / Temp Deviation WASHINGTON – LAKE WASHINGTON SHIP CANAL – Montlake Bridge deviation notice The Coast Guard intends to approve a temporary deviation from the normal operating schedule that governs the Montlake Street Bridge (BRDG UID 31183) across the Lake Washington Ship Canal, mile 5.2. The Montlake Street Bridge need not open the draw for marine vessels during heavy road traffic for the 2026 University of Washington football games on the following dates and times: - 06 Sep 1000 to 1330 and 1600 to 1830; - 12 Sep, 0930 to 1300 and 1530 to 1800; - 19 Sep, 1300 to 1700 and 1900 to 2200; - 26 Sep, 1700 to 2030 and 2300 to 0130; - 09 Oct, 1500 to 1830 and 2100 to 2330; - 07 Nov, 0930 to 1300 and 1530 to 1800; - 21 Nov, TBD. The deviation is necessary to accommodate vehicular traffic attending football games at Husky Stadium at the University of Washington, in Seattle, Washington. This deviation will allow Montlake Bridge to remain in the closed-to-navigation position before and after each game. Due to television scheduling, game times will be published at later dates when determined, and the MSI will be updated with the bridge closure times. Vessels which do not require a bridge opening may continue to transit beneath this bridge during the closure. The bridge will be required to open, if needed, for vessels engaged in emergency response operations during this closure period. The Coast Guard will publish any updates or changes to this operating schedule in future MSI announcements. The bridge shall operate in accordance with 33 CFR § 117.897 at all other times. If any mariner cannot support the dates listed for a bridge closure, please submit a comment by 04 Jul 2026 at [email protected]. For more information, contact Colleen Kelly at (425) 739-3700. Position 47-38.85N 122-18.28W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-F3F844PAN PANSECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA General / Miscellaneous West Coast Hopper Maintenance Dredging will be conducting pipeline installation and movement of equipment operations at the East Sand Island (RM 04+00 to RM 15+90) from 19 Oct 2026 through 20 Nov 2026. Operations and vessel transits will be conducted 7 days per week, 24 hours per day. Working vessels include a hopper dredge, M/V Dredge Bayport, 03 crew boats, M/V John M, M/V Aggie and M/V Flasher and 04 tugboats, M/V Ocean Joy, M/V Voyager, M/V Jax, and M/V Ernie G. All pipeline is temporary and will have danger buoys and lights marking them. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. Working vessels will be monitoring VHF-FM channels 13 and 16. For additional information, contact Paul Karscay, Dredge Bayport Captain (562) 762-5450, Taylor McRae, Project Manager (904) 228-5782, Rebecca Read, Project Engineer (904) 466-2564, and Juan Valdez at (904) 697-6099. Location Information: Placement: East Sand Island Submerged pipe, mid-point: 46-15.61N 123-58.97W; Offshore end: 46-15.51N 123-59.16W. Position 46-15.60N 123-58.68W USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - CAPE HORN General / Miscellaneous Bergerson Construction, Inc. will commence pile driving operations between Prindle Dike Light 73 on the Columbia River in the vicinity of River Mile 134 (Latitude/Longitude: 45°34'57.35"N, 122° 9'29.93"W) down to Cape Horn Range Front Light (Latitude/Longitude: 45°34'4.75"N, 122°11'36.27"W) from November 9 through November 18, 2026, Monday through Friday, from 0700 to 1800 daily. A 60’ x 120’ crane barge and assistant vessel will be monitoring VHF-FM channel 17. White flashing lights will be used to demarcate the barge. Mariners are requested to use caution and reduce wake when transiting the area. For additional information, contact Clayton Solberg with Bergerson Construction, Inc. at (503) 325-7130. USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-DC70F8SÉCURITÉCRIMS ISLAND TO ST HELENS - LONGVIEW General / Marine Construction (Excluding Bridges) / Dredging Pacific Rock and Dredge will be conducting dredging and disposal operations rear the Old Mouth Cowlitz Channel, Longview, WA (RM 67.5) from 16 – 19 Nov 2026, operating 24-hrs, 7 days/week. Disposal site will occur near Columbia RM 56 or 73. Dredge vessel Heidi Renee, Dump scow Sand Island and tug James T will on-scene, monitoring VHF-FM channels 16, 13 and 72. Mariners are requested to use extreme caution in work areas and are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. For additional information, contact Darrell Jamieson at (360) 984-9178 or email at [email protected]. Position 46-05.57N 122-55.23W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-FA9A46SÉCURITÉCRIMS ISLAND TO ST HELENS - LONGVIEW General / Marine Construction (Excluding Bridges) / Dredging The M/V ESSAYONS may be conducting dredging activities in the Columbia River, Slaughter Bar/Lower Dobelbower Bar (RM 63+20 to RM 67+40) from 03 – 10 Nov 2026. Disposal will be at RM 70 OR side and RM 61 WA side. USACE requests mariners transit at their slowest safe speed to minimize wake when in the vicinity of a dredge and proceed with caution after passing arrangements have been made on VHF-FM channel 13. Vessel(s) and/or equipment may encroach into the channel. Mariners are advised that the start and ending dates for dredging activities may vary due to unforeseen on-site conditions, such as gill net fishing, weather and other factors. USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-DA7592SÉCURITÉMILLER SANDS - WELCH ISLAND General / Marine Construction (Excluding Bridges) / Dredging The M/V ESSAYONS may be conducting dredging activities in the Columbia River, Skamokawa Bar (RM 32+24 to RM 36+05) from 03 – 10 Nov 2026. Disposal will be at RM 28 OR side. USACE requests mariners transit at their slowest safe speed to minimize wake when in the vicinity of a dredge and proceed with caution after passing arrangements have been made on VHF-FM channel 13. Vessel(s) and/or equipment may encroach into the channel. Mariners are advised that the start and ending dates for dredging activities may vary due to unforeseen on-site conditions, such as gill net fishing, weather and other factors. USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR PUGET SOUND, SUBMERGED LAND ACT (SLA) - STRAIT OF JUAN DE FUCA General / Miscellaneous The Pacific Northwest National Laboratory (PNNL) will be deploying a lit 1 ft x 1 ft x 1 ft Sofar Spotter buoy for research activities in Clallam Bay, Washington (approximately 48°15'54.0”N, 124°16'12.0"W). The deployment will occur between approximately December 2026 and September 2027 and last up to 9 months. Mariners are requested to use caution and reduce wake when transiting nearby during deployment and retrieval operations. The accompanying research vessel may be hailed on VHF-FM channel 16. For additional information, contact Matt Howard at +1-805-320-7848 or [email protected]. Position 48-15.90N 124-16.20W USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - WILLAMETTE RIVER General / Marine Events / Boat Parade A ship parade will be occurring on the Willamette River between the Fremont Bridge and Milwaukie Riverfront Park, Portland, OR, starting and ending from Riverplace Marina from 7:00 p.m. to 9:00 p.m. on December 17th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-28.75N 122-40.03W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-644545SÉCURITÉDESDEMONA SANDS - TANSY POINT General / Marine Construction (Excluding Bridges) / Dredging J.F. Brennan Dredging will be conducting dredging operations near the Port of Astoria Central Waterfront Slip 1 on the Columbia River from 02 November - 15 December 2026. Hours of operations will be Monday through Saturday 0600-2000. Operations are permitted only during the Ebb Tide current. Dredge No. 7 will be dredging at the Port of Astoria Central Waterfront Slip 1 between Pier 1 & 2 and the submerged dredge pipe will discharge in the Columbia River Flow in position 46-11.45’ N, 123-51.73’ W. Dredge vessels will be monitoring VHF-FM channel 79, 13 and 16. Mariners are requested to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. For additional information, contact Randy Steed, Senior Project Manager at (503) 314-3348 or email [email protected] Position 46-11.45N 123-51.52W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring along the Vancouver Waterfront, Vancouver, WA on the Columbia River starting from the M. James Gleason Boat Ramp and ending at Hayden Bay Marina from 7:00 p.m. to 9:00 p.m. on December 16th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-36.83N 122-40.03W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-454DFESÉCURITÉCOLUMBIA RIVER - CHINOOK CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Port of Chinook will be conducting maintenance dredging for the Port of Chinook Marina from 02 November 2026 through 15 February 2027. Dredging activities will occur entirely within the Marina boat basin, 7 days a week. Disposal will be at the Chinook Marina Upland Placement site. Mariners are requested to transit at their slowest safe speed to minimize wake and proceed with caution. For additional information, contact Richard Wright, Port of Chinook Director at 360-214-8864. Position 46-16.22N 123-56.85W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring along the North Portland Harbor, Portland, OR on the Columbia River starting from the M. James Gleason Boat Ramp and ending at Portland Yacht Club from 7:00 p.m. to 9:00 p.m. on December 15th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-36.38N 122-40.67W USCG Northwest District Local Notice to Mariners 45/2026
- SALMONBAY General / Bridges WASHINGTON – LAKE WASHINGTON SHIP CANAL – SHILSHOLE BAY – Bridge notice (Revised) Burlington Northern Santa Fe Railway Company (BNSF) will be performing heavy rail maintenance/construction on the Salmon Bay Railroad Bridge (BRDG UID 31177) (AKA BNSF Bridge 6.3), mile 0.1, across the Lake Washington Ship Canal in Seattle, Washington. The construction work requires the draw of the subject bridge to be closed from 02 November 2026 to 25 November 2026. This draw closure corresponds with the USACE’s large Hiram M. Chittenden Lock closure. The Coast Guard has approved a temporary deviation to the operating schedule that governs the Salmon Bay Railroad Bridge from 0600 on 02 November 2026 to 1600 on 25 November 2026. The draw will be able to open from 8 A.M. to 8 P.M on 14 - 18 November 2026, if a 24-hour notice is given to the bridge operator. The subject bridge provides 43 feet of vertical clearance in the closed-to-navigation position at mean higher high water. Vessels which do not require a bridge opening may continue to transit beneath the bridge during this closure period. This construction requires barges in the navigation channel during the same time as USACE’s annual lock closure and maintenance to minimize impacts. A crane and material barge will be positioned in the water to service the work of erecting temporary trusses that are required to execute the counterweight change out. During this timeframe, access on the southern channel to the small locks will be in operation during the large lock closure. A construction zone will be established for mariners to navigate around at minimum safe speed. The subject bridge will not be able to open for emergencies, and there is no immediate alternate route for vessels to pass. For more information on this draw bridge closure contact Travis Woodley at [email protected] or (682) 978-3311. Position 47-40.02N 122-24.13W USCG Northwest District Local Notice to Mariners 45/2026
- RICH PASSAGE - SINCLAIRINLET General / Marine Events / Regatta (Race) 21 NOV 2026, 1000-1800. Annual sailing regatta in Sinclair Inlet. Participants will round temporary and permanent marks throughout the waterway. USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - WILLAMETTE RIVER General / Marine Events / Boat Parade A ship parade will be occurring on the Willamette River between Cathedral Park and Ross Island, Portland, OR, starting from Riverplace Marina and ending at Cathedral Park from 7:00 p.m. to 9:30 p.m. on December 20th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-30.63N 122-40.22W USCG Northwest District Local Notice to Mariners 45/2026
- ST HELENS - MULTNOMAH CHANNEL General / Marine Events / Boat Parade A ship parade will be occurring between J. J. Collins Memorial Park, Scappoose, OR and the Wapato Bridge, Portland, OR on the Multnomah Channel from 4:30 p.m. to 8:00 p.m. on December 13th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-45.75N 122-49.03W USCG Northwest District Local Notice to Mariners 45/2026
- PUGET SOUND - SHILSHOLE BAY General / Marine Events / Regatta (Race) 14 NOV 2026 - 20 MAR 2027, 1100-1700 each day. Sailing regatta conducted in Shilshole Bay on the second Saturday of NOV-JAN and third Saturday of FEB and MAR. Participants will race between preestablished marks throughout Shilshole Bay. USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-3D5844SÉCURITÉGUEMES CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Duwamish Services will be conducting dredging operations near Guemes Channel, Anacortes at the Anchor Cove Marina from 01 - 17 Nov 2026. Dredge operations will occur during daylight hours, and the dredge sediment will be transported during nighttime hours to the Rosario Strait Open Water Disposal Site. Mariners are requested to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. For additional information, contact Forrest Carpenter, Project Manager at (541) 441-9898 or email www.deainc.com USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring in the vicinity of the I-205 bridge beginning at the M. James Gleason Boat Ramp and extending from Wintler Park to just east of McCuddy’s Steamboat Landing Marina, Vancouver, WA on the Columbia River from 7:00 p.m. to 9:00 p.m. on December 8th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-36.17N 122-37.00W USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - WILLAMETTE RIVER General / Marine Events / Boat Parade A ship parade will be occurring on the Willamette River between Riverplace Marina, Portland, OR, and Milwaukie Bay Park, Milwaukie, OR from 7:00 p.m. to 9:00 p.m. on December 11th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-30.58N 122-40.18W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-6E72B5SÉCURITÉSECTOR COLUMBIA RIVER, TERRITORIAL SEA - SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) General / Marine Construction (Excluding Bridges) / Boring and Core Samples TYPE OF WORK: Marine dive operations at each of six lat-lon coordinates, corresponding to the horizontal directional drill (HDD) exit points of six (6) subterranean conduits for the future housing of up to six buried fiber-optic telecommunications cables. The HDD equipment staging and drilling operations will take place from a single onshore location in Grays Harbor County. Marine activity will be limited to dive operations. LOCATION WHERE WORK WILL BE DONE: Outer Pacific coast of Washington State south of Westport, Grays Harbor County, at six points approximately 0.75 nautical miles offshore Cohassett Beach. LAT/LONG OF MARINE OPERATIONS: (Degrees, Minutes, Seconds – Coordinates in WGS84) Position 1. N46 52 28.3607; W124 08 22.0226 Position 2. N46 52 26.7419; W124 08 22.0186 Position 3. N46 52 25.1255; W124 08 21.8943 Position 4. N46 52 23.5069; W124 08 21.8440 Position 5. N46 52 21.8924; W124 08 21.6716 Position 6. N46 52 20.2860; W124 08 21.3807 CHART NUMBERS: US4WA1EE; US3WA1DE BEGINNING/ENDING DATES: October 15 2026 – February 15 2027 HOURS OF OPERATION: Daylight hours only. Dive operations to be conducted approximately 12 days total during the operational period between October 15 2026 – February 15 2027. EQUIPMENT ON SCENE: Dive support vessel R/V Zephyr with anchor spread. RADIO FREQUENCY VESSEL CAN BE CONTACTED ON: Monitoring VHF Channels 16 and 19. PASSING ARRANGEMENTS/SAFE NAVIGATION DISTANCE: Mariners are requested to keep a minimum ½ nautical mile distance from the dive vessel. To ensure diver safety, any trolled, drift or fixed gear such as pots/traps is requested to remain clear of the dive vessel by a distance of ½ nautical mile. For additional information, please contact: Wolfgang Rain at 206-427-6553 /[email protected] Captain Ron Micjan at 503-632-5553 /[email protected] USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-04E916SÉCURITÉPUGET SOUND - EAST PASSAGE General / Marine Construction (Excluding Bridges) / Dredging American Construction Company will be conducting dredging operations in the Duwamish River, WA (STA 242+00 to 275+56) from 07 Dec 2026 through 01 Mar 2027. Work includes maintenance dredging of approximately 140,000 CY, operating 24-hours per day, seven days a week until completion. Working vessels include a clamshell dredge, M/V Mukilteo to dredge and M/V LUMMI to load the split-hull scows. The scows will be towed to the DNR Elliott Bay Disposal site. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made with the Tug Captain. Working vessels will be monitoring VHF-FM channels 13 and 16. For additional information, contact Aaron McMahill at (253) 350-1670, [email protected]. USCG Northwest District Local Notice to Mariners 45/2026
- PUGET SOUND - SHILSHOLE BAY General / Marine Events / Regatta (Race) 13-15 NOV 2026, 1000-1800 each day. 3-day keelboat collegiate regatta racing around temporary buoys in Shilshole Bay with one day being a distance race either to Pt. Robinson or Double Bluff weather depending. USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - WILLAMETTE RIVER General / Marine Events / Boat Parade A ship parade will be occurring on the Willamette River between Riverplace Marina, Portland, OR, and Milwaukie Bay Park, Milwaukie, OR from 7:00 p.m. to 9:00 p.m. on December 8th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-30.55N 122-40.25W USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - WILLAMETTE RIVER General / Marine Events / Boat Parade A ship parade will be occurring on the Willamette River between the Fremont Bridge and Ross Island, Portland, OR, starting from Riverplace Marina from 7:00 p.m. to 9:00 p.m. on December 9th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-30.68N 122-40.28W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring in the vicinity of the I-205 bridge beginning at the M. James Gleason Boat Ramp and extending from Wintler Park to just east of McCuddy’s Steamboat Landing Marina, Vancouver, WA on the Columbia River from 7:00 p.m. to 9:00 p.m. on December 17th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-36.18N 122-34.65W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring east of Lady Island in the vicinity of the Washougal Waterfront Park, Washougal, WA on the Columbia River starting from 6:00 p.m. to 9:00 p.m. on December 5th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-34.57N 122-22.98W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring between the Columbia Riverfront RV Park, Woodland, WA and the St. Helens Public Dock, St. Helens, OR on the Columbia River from 6:00 p.m. to 8:00 p.m. on December 12th, 2026 . This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-54.00N 122-48.20W USCG Northwest District Local Notice to Mariners 45/2026