now fitted with CAT D3508 engines. Additionally the steam heating equipment has been removed and two small diesel generator sets installed, one for train heating and the other to supply auxiliary power to the locomotive. V 200 077 is also owned by CTT and is being refurbished to the same standard. V 200 018 is on static indoor display at the Deutsches Technikmuseum in Berlin which is housed on the site of former Anhalter Bahnhof depot. On certain days the museum places locomotives outside the roundhouse for better photographic opportunity. V 200 033 is owned and operated by the Hammer Eisenbahn Museum at Hamm. It operates private charter trains over DB main lines and also over the lines of the WLE from Hamm to Lippborg. It is the only authentic example of a V 200.0 still operational, retaining all the important original features, including Maybach engines, Mekydro transmissions and steam heating equipment. V 200 053 is owned and operated by Brohltal-Eisenbahn GmbH, where it is numbered "D9". It was refurbished and re-engined by Gmeinder and is now fitted with CAT D3508 engines. This locomotive is primarily a freight engine although it has worked passenger trains in summer months. 220 058 & 220 071 are both on outdoor display at the Technikmuseum Speyer. Neither of these locomotives carry truly authentic liveries nor are they mechanically complete. V200 013, V200 015 and V200 016 that were previously owned by Swiss Railways are still in existence at Altenbeken and Kornwestheim. Technology The V 200 had two fast-running (1500 RPM) V12 diesel engines. The transmission was hydraulic, each engine drove one bogie set via a hydraulic torque converter. The maximum speed was 140 km/h. The prototypes had a maximum power of 1,471 kW, the V 200.0 had a power of 1,618 kW. Unlike some other diesel-hydraulic locomotives the V 200 was renowned for its high reliability. Maybach (type MD650), Mercedes-Benz (type MB820Bb) and MAN (type L 12 V 18/21) engines were used. The hydraulic transmissions fitted to the locomotives were supplied by Maybach (type Mekydro K104U) and Voith (type LT306r/rb). Although differing in several ways – for example the Mekydro K104 transmission had a single torque converter and four mechanical gear stages while the Voith L306 had three different-sized torque converters – the engines and transmissions were designed so that the various types were completely interchangeable, not just amongst V 200.0 but with other