August von Parseval

Graf Zeppelin-class ships were equipped with classic steam turbine propulsion. The lead aircraft carrier, in particular, had geared-turbine units and boilers manufactured in Switzerland. However, the Germans believed that for raider ships to have a long cruising range and adequate speed, it was absolutely necessary for their main propulsion plants to be of the diesel type. Their successive raider aircraft carriers would likely have been equipped with a diesel propulsion plant.