1945. She was renamed Malygin (Малыгин), becoming the second Soviet icebreaker named after the Russian 18th century arctic explorer Stepan Malygin. The old Malygin, built in 1912, had been lost in a storm near Kamchatka in 1940. In 1950 she was modernized and her boilers were converted to oil. The name Voima was later given to the first Finnish post-war icebreaker. Malygin remained in service until 1970. She was broken up in the following year. Technical details Voima was long overall and at the waterline. Her moulded breadth was and breadth at the waterline slightly smaller, . To improve her icebreaking characteristics Voima was built with considerable stern trim, meaning that her draft was greater in the stern than in the bow. When operating at a normal displacement of 2,070 tons, her bow draft was and stern draft , but the latter could be increased up to in case of difficult ice conditions. Voima had a crew of 44. The hull of Voima, designed by Finnish naval architect K. Albin Johansson, was based on Finnish icebreakers Sampo and Tarmo, and the Russian icebreaker Pyotr Velikiy — her hull form and main dimensions were interpolated from the three older icebreakers. While initially designed without a bow propeller, her bow was later completely rebuilt with one. The angle of the stem, the first part of the icebreaker to encounter ice and bend it under the weight of the ship, was 26 degrees. Voima was powered by two coal-fired triple-expansion steam engines manufactured by Vulcan-Werke Hamburg und Stettin AG, one driving a propeller in the stern and the other a second propeller in the bow to reduce friction between the hull and the ice. The stern engine was rated at 2,500 ihp at 95 rpm and the bow engine 1,000 ihp at 140 rpm, but during backing and ramming the engines could produce 2,800–3,100 ihp and 1,200–1,300 ihp, respectively, for a brief period of time. Her speed in open water was . The four coal-fired mechanically ventilated main boilers, installed on the icebreaker in 1918 in Danzig, had been manufactured by Blohm & Voss in 1899 and originally intended for German armored frigate SMS Friedrich der Grosse. In addition Voima had a smaller auxiliary boiler, manufactured by Vulcan in Turku. Her fuel stores could hold 380 tons of coal that was fed to the fireboxes at a rate of 2.4–3.3 tons per hour