Replacement of the ship's -tall, -wide lower masts in wood was not feasible, so they were made of steel tube cut and welded to shape, with a ladder inside each mast to allow access to the platforms on the masts. The three masts and the bowsprit were stepped in place between September 1984 and February 1985. "Warrior"s engines, boilers and auxiliary machinery were considered too expensive to rebuild, so replicas were built from sheet steel with a few components made from cast iron to duplicate the look of the real equipment. The replica engines can rotate slowly, using electrical power, to allow visitors to imagine how they might have looked in operation.