 The ships ' propulsion system consisted of two steam turbines manufactured by the Deutsche Werke and Germaniawerft shipyards , along with four 7 @-@ cylinder double @-@ acting two @-@ stroke diesel engines built by MAN . Steam for the turbines was provided by six Marine @-@ type double @-@ ended oil @-@ fired boilers . The engines were rated at 60 @,@ 000 shaft horsepower ( 45 @,@ 000 kW ) for the turbines plus 12 @,@ 400 shp ( 9 @,@ 200 kW ) for the central diesel engines . The ship 's propulsion system provided a top speed of 32 kn ( 59 km / h ; 37 mph ) and a range of approximately 3 @,@ 900 nautical miles ( 7 @,@ 200 km ; 4 @,@ 500 mi ) at 10 kn ( 19 km / h ; 12 mph ) using only the diesel engines . With only the turbines in operation , the ships could steam for 2 @,@ 800 nmi ( 5 @,@ 200 km ; 3 @,@ 200 mi ) at a speed of 16 @.@ 5 kn ( 30 @.@ 6 km / h ; 19 @.@ 0 mph ) . 
