S. Coast Guard Cutter Polar Star, the nation's only active heavy icebreaker, celebrated its 50th year of commissioned service on January 17, 2026, by freeing and escorting a cruise ship trapped in pack ice in the Southern Ocean. S.
Antarctic Program. During its five decades of service, Polar Star has executed numerous missions ranging from resupply and search and rescue to environmental protection and national defense. Despite its age, the cutter continues to demonstrate heavy icebreaking capability, routinely operating in conditions few vessels can navigate.
S. presence in the polar regions. S.
polar operations. The cutter's 50th anniversary marks an impressive milestone, solidifying its position as the world's most capable non-nuclear icebreaker. With years of service left to give, Polar Star will continue to guide the way in the high latitudes well into the future.
The U.S. Coast Guard Cutter Polar Star is a testament to the ingenuity and dedication of its crew, who have maintained the ship's capabilities over the decades. Its ability to operate in some of the harshest environments on Earth is a remarkable achievement that underscores the professionalism of the U.S. Coast Guard.






