Icebreaker
In May 2007, sea trials were completed for the nuclear-powered Russian icebreaker NS . The vessel was put into service by Murmansk Shipping Company, which manages all eight Russian state-owned nuclear icebreakers. The keel was originally laid in 1989 by Baltic Works of Leningrad, and the ship was launched in 1993 as NS "Ural". This icebreaker was intended to be the sixth and last of the "Arktika" class, and currently is the world's largest icebreaker.
USCGC Healy (WAGB-20)
USCGC "Healy" (WAGB-20) is the United States' largest and most technologically advanced icebreaker as well as the US Coast Guard's largest vessel. She is classified as a medium icebreaker by the U.S. Coast Guard. She is homeported in Seattle, Washington and was commissioned in 1999. On September 5, 2015, USCGC "Healy" became the first unaccompanied United States surface vessel to reach the North Pole.