Machinery
Four Parsons turbines drove four shafts. The drive was direct, with no reduction gearing. Steam was supplied by eighteen Babcock and Wilcox boilers, disposed in three boiler rooms with six boilers in each. The designed shaft horsepower (SHP) was 27,000 and the design maximum speed was 21 knots (39 km/h). Maximum fuel load was 3,100 tons of coal and 840 tons of oil, giving a radius of action at 10 knots (19 km/h) of 6,310 nautical miles (11,690 km). Power could be increased to 31,000 shp (23,000 kW) for short periods; the maximum four-hour speed for Ajax was 21.7 knots (40.2 km/h). The radius of action at 18.15 knots (33.61 km/h) was found to be 4,060 nautical miles (7,520 km).
Read more about this topic: HMS Ajax (1912)
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