Threeaxle diesel locomotive Em 3/3 # 18824 "Emma" of the SBB, used as shunter in the industrial works of the SBB in Olten. The locomotive with a 442 kW SLM diesel prime mover (6 VD 20 TrTH), generator and two electric driving motors (all axle driven by coupling rod) , and 65 km/h maximum velocity, was built in 1963 by SLM, BBC and SAAS in a series of 41, of which were 6 prototypes slightly different. Nowadays, only very few are in operation yet, some taken over by other railways or associations.
