Fuel oil
Coal storage was as designed, though up to could be carried. Fuel oil was initially , and could be similarly increased to . At a cruising speed of , the ships could steam for approximately . At a higher speed of , the range fell considerably, to . Electrical power was provided by two turbo generators and one diesel generator, with a total output of 300 kilowatts at 220 volts. Steering was controlled by a single, large rudder.