LNM11-C691AB
SÉCURITÉReceived 23 Sept 2026, 00:00 UTC
Warning text
Positions open on the mapSAN FRANCISCO BAY - OAKLAND OUTER HARBOR
General / Marine Construction (Excluding Bridges) / Dredging
Manson Construction Co., under contract with the US Army Corps of Engineers, San Francisco District, will conduct clamshell dredging of the Oakland Inner and Outer Harbor Channels with upland disposal at Montezuma Wetlands via unloader. Dredging will occur in the Oakland Inner Harbor Channel from station 0+00 to 244+00, between 37-48.06N 122-21.74W and 37-47.60N 122-16.86W, and in the Oakland Outer Harbor Channel from station 0+00 to 134+00, between 37-48.28N 122-21.00W and 37-49.31N 122-18.69W. Placement will occur at the Montezuma Unloader in Collinsville, CA. Operations are expected to begin on or about August 24, 2026, and continue through approximately January 11, 2027, 24 hours a day, 7 days a week. Vessels involved include dredge DB Njord (Call Sign WCZ5435), tugboat Jeffery M (Call Sign WSX6846), survey boat Wahoo (Call Sign WAB4086), crew boat Grace (Call Sign WDN9911), and tugboat Sagittarian (Call Sign WCY5210). Vessels will monitor VHF channels 13, 14, 16, and 67. For more information, contact Project Manager Alex Kolessar at 904-568-0213. All mariners are advised to transit the area with caution.
USCG Southwest District Local Notice to Mariners 45/2026
Location map
Open on the full mapKeywordsmarine construction