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.
Voima (1952 icebreaker)
With an overall length of and a moulded beam of , "Voima" was once the longest and widest icebreaker ever built in Finland. At a draft of , her waterline measures in length and she can break a channel with a width of . Although her refit increased the draft of the ship to and displacement from 4,415 tons to 5,209 tons, she is now the smallest and lightest of the Finnish state-owned icebreakers. "Voima" was built to the highest ice class at the time, Lloyd's Register 1A, with a fully welded hull and shell plating measuring in thickness in the ice belt. Her ice strengthening was further increased in the refit. While "Voima" holds the highest Finnish-Swedish ice class, 1A Super, it has hardly any meaning for icebreakers which are of considerably stronger build than merchant ships operating in their care.