Category:British Rail Class 23

English: The British Rail Class 23 Bo-Bo Diesel-electric locomotives (so-called 'Baby Deltics') were a ten strong class of locomotives built by the English Electric Company in 1959. They were numbered from D5900 to D5909. The power unit used a Napier Deltic T9-29 9 cylinder engine of 1100 hp driving an EE generator, which powered the four traction motors.