 The ship was powered by three license @-@ built Parsons direct @-@ drive steam turbines , each driving one propeller shaft . They were powered by steam provided by four cylindrical boilers at a working pressure of 170 psi ( 1 @,@ 172 kPa ; 12 kgf / cm2 ) that gave her a speed of 24 @.@ 2 knots ( 44 @.@ 8 km / h ; 27 @.@ 8 mph ) . Her engines burnt up to 95 long tons ( 97 t ) of coal a day , which made her an expensive ship to run . 
