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.
Suur Tõll (icebreaker)
When "Suur Tõll" was delivered in 1914, she was one of the most modern icebreakers in the world. Extensively electrified, she had electrical lighting and her anchor windlass, winches and two coal cranes were all powered by electricity to avoid having easily freezing steam pipes on the deck. Furthermore, she had an electrical salvage pump that could be transported to a grounded ship in a boat or on a sledge over ice without bringing the icebreaker too close to the shallow waters. When delivered, her radio station had a range of , but it was later increased to .