Nuclear-powered icebreaker
On 17 August 1977, NS "Arktika" ("Arctic") became the first surface ship ever to reach the North Pole. "Arktika" was withdrawn from service in 2008 after clocking up 175,000 hours of reactor operation time and covering more than 1 million nautical miles. Rather than be scrapped, there are calls for her to be converted to a museum ship, like her predecessor "Lenin".
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.