In 1932, the Deutsche Reichsbahn had the much larger, faster and more powerful locomotives of DR Class 99.32 (99 321-323) built. These three locomotives are still working under the numbers 99 2321 to 2323. In 1961, three additional locomotives came to the line from the Wismut industrial railways and were classified as DR Class 99.33 (99 331-333). One of the three, no. 99 331 (later 99 2331), is working and acts as a reserve or as a train locomotive in winter (due to its lower risk of derailment). No. 99 332 is a monument at the Molli Museum at Bad Kühlungsborn West station; loco no. 99 333 was scrapped.