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.
Jääkarhu
Being one of the last large steam-powered icebreakers in active service, "Sibiryakov" was used in a 1960s Soviet documentary film to represent the steam-powered icebreaker, "Yermak", which had been broken up in 1964. She was also used in the 1969 Soviet/Italian film "The Red Tent" to represent another Soviet icebreaker, "Krasin", which had participated in the rescue mission of Umberto Nobile and other survivors of the crash of airship "Italia" in 1928. While the original 1917-built icebreaker was still in service at that time, her extensive rebuilding in 1953–1960 had changed the look of the vessel completely and thus a more traditional-looking icebreaker was needed for the role.