A crewmember of the Coast Guard Cutter POLAR STAR executes a scuba dive in the frigid waters off McMurdo Station in Antarctica. He was joined by divers from the U.S. Army and the Canadian Navy in determining if the aging cutter, a heavy icebreaker, required repairs. At 399-feet long, it is among the largest cutters operated by the Coast Guard and designed for open-water icebreaking. The cutter and crew were working in support of Operation Deep Freeze-the military's contribution to the National Science Foundation-managed polar research program. US Coast Guard Art Program 2023 Collection, Ob Id # 202329, Ice diving in the Antarctic, Stephen Roberson, oil, 16x20 inches.