 Erzherzog Ferdinand Max displaced 10 @,@ <unk> long tons ( 10 @,@ 640 t ) . She was 414 feet 2 inches ( 126 @.@ 2 m ) long , had a beam of 71 feet 5 inches ( 21 @.@ 8 m ) and a draft of 24 feet 7 inches ( 7 @.@ 5 m ) . She was manned by 700 men . She and her sisters were the last and largest pre @-@ dreadnought class built by the Austro @-@ Hungarian Navy , surpassing the Habsburg class by approximately 2 @,@ 000 tonnes ( 1 @,@ 968 long tons ) . She was propelled by two two @-@ shaft , four cylinder vertical triple expansion steam engines . On trials , they developed 18 @,@ 000 <unk> ( 13 @,@ <unk> kW ) , which propelled the ship at a speed of 20 @.@ 5 knots ( 38 @.@ 0 km / h ; 23 @.@ 6 mph ) . 
