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.
Murtaja (1890 icebreaker)
In 1889, the Finnish factory owners encouraged the Danish shipping company Det Forenede Dampskibs-Selskab to send their icebreaker, "Bryderen", to the northern Baltic Sea and try to open a path to the icebound port of Hanko. "Bryderen", the most powerful icebreaker in Europe at that time, had steam engine and could easily break ice up to thick. As word got around, people in the Senate of Finland became interested in the experiment as its result would affect the general opinions regarding icebreakers and winter navigation.