Arktika-class icebreaker
The "Arktika" class is a Russian (former Soviet) class of nuclear-powered icebreakers. Formerly known as "Project 10520 nuclear-powered icebreaker", they were the largest and most powerful icebreakers until the 2016 launch of the ship named Arktika. Ships of the "Arktika" class are owned by the federal government, but were operated by the Murmansk Shipping Company (MSCO) until 2008, when they were transferred to the fully government-owned operator Atomflot. Of the ten civilian nuclear-powered vessels built by Russia (and the Soviet Union), six have been of this type. They are used for escorting merchant ships in the Arctic Ocean north of Siberia as well as for scientific and recreational expeditions to the Arctic.
Otso (icebreaker)
Although the "Otso" is slightly shorter than her predecessors "Urho" and "Sisu", she is slightly wider and was, at the time of her delivery, the widest subarctic icebreaker in the world with a beam of . However, with a maximum draft of and a minimum operating draft of only , "Otso" is able to escort ships to shallower ports than her predecessors. The displacement of the icebreaker is 9,130 tons.