The U.S. Navy hospital ship USNS Mercy has arrived at Vigor’s shipyard in Portland, Oregon, on Thursday according to the latest Automatic Identification System (AIS) data, effectively confirming the vessel’s long-anticipated destination following weeks of speculation tied to a proposed Greenland deployment.
Recent AIS signals show the 1,000-bed hospital ship completing its northbound transit along the U.S. West Coast and entering the Columbia River, with arrival recorded on March 19—roughly in line with its previously scheduled shipyard availability at Vigor’s Swan Island shipyard.
The arrival provides the clearest confirmation yet that Mercy’s voyage from the Gulf Coast through the Panama Canal was part of a planned repositioning to the Pacific Northwest, rather than an Arctic deployment.
Mercy departed Alabama Shipyard in Mobile in late February following repairs and initially drew global attention after President Donald Trump stated on social media that the vessel was “on its way” to Greenland. The announcement triggered confusion among officials and pushback from Greenland’s leadership, who said no such mission had been requested.
AIS tracking in the weeks that followed increasingly pointed toward a different destination. After transiting the Panama Canal in early March, the vessel was observed sailing steadily north along the Pacific coast, aligning with long-standing plans for a major maintenance period in Portland.
“Nobody expected the Northwest Passage approach,” one user joked on social media.
The ship is now expected to enter a multi-month overhaul at Vigor Industrial, part of an approximately $90 million yard availability program that will keep the vessel out of operational service for several months.
The ship’s yard availability and operational constraints had already cast doubt on the feasibility of a Greenland mission. Mercy is not ice-strengthened and has no history of Arctic operations, where late-winter sea ice, iceberg hazards, and limited port infrastructure would pose significant challenges for a vessel of its size.
The vessel’s arrival in Portland on Thursday underscores the gap between President Trump’s political messaging and reality, with AIS data ultimately providing a transparent, real-time record of the ship’s actual movements.
USNS Mercy, operated by the U.S. Navy’s Military Sealift Command, is one of two hospital ships in the fleet and can accommodate up to 1,000 patients with 12 operating rooms when fully activated. Its sister ship, USNS Comfort, remains in Alabama undergoing its own maintenance period.
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