 The Fusō @-@ class ships had two sets of Brown @-@ Curtis direct @-@ drive steam turbines , each of which drove two propeller shafts . The medium @-@ pressure turbines drove the wing shafts while the high- and low @-@ pressure turbines drove the inner shafts . The turbines were designed to produce a total of 40 @,@ 000 shaft horsepower ( 30 @,@ 000 kW ) , using steam provided by 24 Miyahara @-@ type water @-@ tube boilers , each of which consumed a mixture of coal and oil . The ships had a stowage capacity of 4 @,@ 000 long tons ( 4 @,@ 100 t ) of coal and 1 @,@ 000 long tons ( 1 @,@ 000 t ) of fuel oil , giving them a range of 8 @,@ 000 nautical miles ( 15 @,@ 000 km ; 9 @,@ 200 mi ) at a speed of 14 knots ( 26 km / h ; 16 mph ) . Both ships exceeded their designed speed of 22 @.@ 5 knots ( 41 @.@ 7 km / h ; 25 @.@ 9 mph ) during their sea trials ; Fusō reached 23 knots ( 43 km / h ; 26 mph ) from 46 @,@ 500 shp ( 34 @,@ 700 kW ) and Yamashiro exceeded that with 23 @.@ 3 knots ( 43 @.@ 2 km / h ; 26 @.@ 8 mph ) from 47 @,@ 730 shp ( 35 @,@ 590 kW ) . 
