A Concordia Maritime product tanker has completed a refuelling mission to Greenland under a deal with the US government.
The 65,100-dwt Stena Polaris (built 2010) supports the annual Operation Pacer Goose for the US Air Force.
It headed to the Thule Air Base in the north-west corner of Greenland this month, taking 230,000 barrels of jet fuel.