Boosting the efficiency is the all-new automated digital control system. The ship, designed with a stainless steel ice belt 5 meters (18 feet) wide, breaks through ice up to 2.5 meters (9.2 feet) thick. The icebreaker is driven by 2 nuclear reactors that produce 75,000 horsepower. In open water, top speed can be as much as 21.4 knots.