U.S.-Canada Fourth Joint Mission To Map the Continental Shelf in the Arctic Ocean Views of the U.S.-Canada fourth joint mission to map the continental shelf in the Arctic Ocean in August and September 2011. The 2011 joint mission employed the flagship icebreaker from each country, the U.S. Coast Guard Cutter Healy and the Canadian Coast Guard Ship Louis S. St-Laurent (LSSL), with each ship performing different functions and one ship breaking ice for the other.[State Department photo/ Public Domain]

U.S. Department of State

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