Critical Metals Buys Arctic Cruise Ship to House 300 Workers at Greenland Rare Earth Mining Project
U.S.-based Critical Metals Corp. has acquired the former expedition cruise ship Ocean Endeavour for €7.5 million ($8.5 million) to provide accommodation for workers at its flagship Tanbreez rare earth mining project in southern Greenland, marking another significant investment in the rapidly expanding Arctic critical minerals sector.
The Nasdaq-listed mining, exploration and development company said the vessel will serve as a floating accommodation facility for approximately 300 project personnel, helping overcome the region’s limited housing infrastructure while supporting year-round development activities at one of the world’s largest undeveloped rare earth deposits.
The acquisition comes after the Ocean Endeavour gained international attention earlier this year when it was chartered by the Danish Defence to accommodate Danish and NATO personnel during the Arctic Endurance military exercise in Greenland.
Previously owned by SunStone Marine Group, the 12,900-gross-ton ice-strengthened vessel has been chartered to multiple operators over the years. Designed to carry 190 passengers along with 124 crew and staff, the ship has built a strong reputation for operating safely in some of the world’s harshest polar environments.
The vessel has a long and unique maritime history. Built in Poland in 1982 as the Soviet passenger ferry Konstantin Simonov, it initially operated in the Baltic Sea before changing ownership several times. During the early 2000s, it was converted into a cruise ship, briefly serving an Israeli operator before undergoing further modifications in 2015 for expedition cruising in Arctic and Antarctic waters. Last month, SunStone Marine Group announced that the 137-meter vessel had been placed on the market.
Critical Metals said the ship’s proven performance in both Arctic and Antarctic regions made it the ideal choice for supporting long-term operations at the Tanbreez project. Once deployed, the vessel will remain moored adjacent to the mining site, providing self-contained accommodation while reducing pressure on Greenland’s limited hotel and residential capacity in Qaqortoq and nearby communities.
According to the company, the floating housing solution will improve workforce logistics, enhance operational efficiency and minimize the impact on local tourism and residential infrastructure as construction and development activities continue.
“The Ocean Endeavour provides us with a flexible, proven platform that will support our workforce, improve logistics, and enhance operational efficiency as we continue to progress our development activities in Qaqortoq,” said Tony Sage, Chairman of Critical Metals.
He added that the acquisition strengthens the company’s ability to execute its long-term growth strategy while maintaining a strong commitment to safety and operational excellence in a geographically and culturally sensitive region with limited infrastructure.
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Critical Metals acquired a controlling stake in the Tanbreez Project in 2024. Located in southern Greenland, the project is widely regarded as one of the world’s largest undeveloped rare earth deposits, containing substantial concentrations of heavy rare earth elements that are considered essential for defense technologies, renewable energy systems, electric vehicles, advanced electronics, and next-generation industrial applications.
The purchase also highlights the growing importance of specialized maritime assets in supporting large-scale Arctic mining developments as global demand for critical minerals continues to accelerate.
