The Dutch cargo vessel Thamesborg has been refloated nearly five weeks after running aground in Canada’s Arctic Northwest Passage, according to AIS data cited by gCaptain. The ship’s operator, Wagenborg, has not yet issued an official statement confirming the refloating.
gCaptain reported that Thamesborg grounded on September 6 after striking a shoal while transiting the Northwest Passage on a voyage from China to eastern Canada. The vessel had remained stranded since the incident, prompting an extensive Arctic salvage operation.
According to the report, several support vessels — including the Estonian icebreaker Botnica, Canadian tug Beverly M I, and Dutch freighter Silver Copenhagen — coordinated efforts near Thamesborg on October 8. AIS tracking data later indicated that the vessel began moving around 06:13 UTC, covering roughly three-quarters of a nautical mile with assistance from the support ships.
The Canadian Coast Guard’s icebreaker Des Groseilliers remained nearby to provide monitoring and assistance if required.
As gCaptain noted, before the refloating attempt, approximately 4,000 tonnes of cargo were offloaded from Thamesborg to lighten the vessel, marking the first stage of the salvage plan. The next steps include a detailed inspection to verify hull integrity and determining a safe port of refuge. Wagenborg expects the vessel to proceed under its own power once cleared, with Botnica available for escort if necessary.
The Canadian Coast Guard continues to conduct underwater inspections to ensure no pollution or oil leaks have occurred. The report added that while the fuel and cargo tanks remain intact, limited damage appears to have affected some ballast tanks.
Seasonal ice formation in the Northwest Passage has already begun, potentially influencing the ship’s route as it prepares to depart Arctic waters.
Source: gCaptain, “Arctic Cargo Ship Thamesborg Refloated, AIS Data Show — Awaiting Company Confirmation,” October 2025.
