 Both ships carried one aircraft catapult for a pair of Heinkel He 60 biplane reconnaissance float planes . They were equipped with a crane to retrieve the aircraft after landing . The He 60s were later replaced by the monoplane Arado Ar 196 by 1939 . Leipzig 's catapult was located between the funnel and the forward superstructure , while Nürnberg 's was placed aft of the funnel . 
