Petty Officer 1st Class Eric Kelley, a marine science technician at Coast Guard Marine Safety Unit Portland, stands next to a low-pressure C02 system tank aboard the vessel Morning Catherine during a Port State Control exam at the Port of Portland, Portland, Ore., May 1, 2017. Kelley checks the general condition of the tank, specifically if there is any ice or frost build up, which might indicate a leak in the tank or faulty insulation.

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Size: 7360px × 4912px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: c02, coast, guard, inspection, mst, tank, vessel