Baltic Shipyard
On July 3, 1971, construction began on a conceptual design of a larger nuclear icebreaker, dubbed "Arktika", in the Baltic Shipyard in then Leningrad. Four years later, on December 17, 1975, Moscow and Leningrad received radio messages informing them that sea trials had been completed successfully. The newest and largest nuclear icebreaker at the time was ready for the Arctic.