A powerful nuclear-propelled icebreaker was launched lately in the USSR. Its nuclear plant guarantees autonomous navigation for a period of more than a year without refueling. The icebreaker displacement is 16,006 tons, and the capacity of the main turbines is 44,066 h.p. The icebreaker is capable of moving through two meter thick ice fields with two knots speed, and in ice-free waters with 18 knots speed. A description of the reactor and turbogenerating system is included. The whole plant consists of three pressurized water reactors. (auth)