U.S. Coast Guard Cutter Polar Star, a heavy icebreaker homeported in Seattle, Washington, rests in the ice as the motor vessel Ocean Giant departs from the National Science Foundation’s McMurdo Station, Feb. 1, 2017.
One of the primary responsibilities of the Polar Star’s crew is to provide an escort for the Ocean Giant through the frozen Ross Sea off of Antarctica.
(U.S. Coast Guard photo by Chief Petty Officer David Mosley)