 The propulsion system was rated at 14,000 metric horsepower (13,808 ihp; 10,297 kW), which produced a top speed of 18 knots (33 km / h; 21 mph). On trials, however, the five ships had significantly varied performances. Schwaben, the slowest ship, reached 13,253 metric horsepower (13,072 ihp; 9,748 kW) for a top speed of only 16.9 knots (31.3 km / h; 19.4 mph). Wettin, the fastest, managed 15,530 PS (15,318 ihp; 11,422 kW) and a top speed of 18.1 knots (33.5 km / h; 20.8 mph). They carried 650 metric tons (640 long tons) in their holds, but fuel capacity could be nearly tripled to 1,800 metric tons (1,772 long tons) with the usage of additional spaces in the ships. This provided a maximum range of 5,000 nautical miles (9,260 km; 5,754 mi) at a cruising speed of 10 knots (19 km / h; 12 mph). Electrical power was supplied by four generators that each produced 230 kilowatts (310 hp) at 74 volts, although in Wittelsbach the generators were rated at 248 kilowatts (333 hp).
