During the ship's 1986 to 1987 refit, the steam turbines were removed and replaced with nine German MAN 9L58/64 nine-cylinder, medium-speed diesel engines, each weighing approximately 120 tons. Using a diesel-electric configuration, each engine drives a generator, each developing 10.5 MW of electrical power at 10,000 volts. This electrical plant, in addition to powering the ship's auxiliary and hotel services through transformers, drives the two main propulsion motors, one on each propeller shaft. These motors produce 44 MW each and are of synchronised salient-pole construction, nine metres in diameter and weighing more than 400 tons each.