Petty Officer 3rd Class Caleb Smith, a machinery technician aboard Coast Guard Cutter Healy, works inside one of the cutter's four main engine crankcases Sept. 22, 2015, while underway in the Arctic Ocean. Healy is underway in the Arctic Ocean in support of the National Science Foundation-funded Arctic Geotraces, part of an international effort to study the distribution of trace elements in the world's oceans. ( Coast Guard photo by Petty Officer 2nd Class Cory J. Mendenhall)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
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Keywords: arctic, coast, geotraces, guard, healy, icebreaker, machinery, ocean, technician