like the preceding project 21900 icebreakers, the new icebreakers are also named after major cities of russia with "murmansk" representing the largest city above the arctic circle. previously, the same naming scheme was also used for a series of five diesel-electric polar icebreakers built by the finnish shipbuilder wärtsilä in the 1960s; the previous "murmansk" was in service in 1968–1995.