 Cöln was 130 @.@ 5 meters ( 428 ft ) long overall and had a beam of 14 m ( 46 ft ) and a draft of 5 @.@ 73 m ( 18 @.@ 8 ft ) forward . She displaced 4 @,@ 915 t ( 4 @,@ 837 long tons ; 5 @,@ 418 short tons ) at full combat load . Cöln was initially to be powered by two sets of Zoelly steam turbines manufactured by Escher Wyss & Cie. in Zürich . Her propulsion system was revised and instead consisted of two sets of Germaniawerft steam turbines driving four propellers . They were designed to give 19 @,@ 000 shaft horsepower ( 14 @,@ 000 kW ) . These were powered by fifteen coal @-@ fired Marine water @-@ tube boilers . These gave the ship a top speed of 25 @.@ 5 knots ( 47 @.@ 2 km / h ; 29 @.@ 3 mph ) . Cöln carried 960 t ( 940 long tons ; 1 @,@ 060 short tons ) of coal that gave her a range of approximately 3 @,@ 500 nautical miles ( 6 @,@ 500 km ; 4 @,@ 000 mi ) at 14 knots ( 26 km / h ; 16 mph ) . 
