Vossloh DE 12

Updated: August 2026 – With the modern Kiel locomotives, two letters make all the difference. The Vossloh DE 12 looks almost identical to its hydraulic sister, but works completely differently inside: a generator and traction motors instead of a hydraulic transmission. This page explains what that means, how to tell the two apart and what matters when documenting them.

What is the Vossloh DE 12?

The Vossloh DE 12 is a four-axle diesel-electric locomotive from the Kiel locomotive works of Vossloh. It belongs to the modern locomotive family that includes the hydraulic G types alongside the diesel-electric DE types, and it is designed for mixed operation combining shunting, transfer runs and lighter mainline duties.

The designation is a compact profile in itself. DE names the transmission: diesel-electric, meaning engine to generator, generator to traction motors. The 12 stands for the power class in hundreds of kilowatts. Within the family, that places it below the Vossloh DE 18 and on a level with the hydraulic Vossloh G 12.

Hydraulic or electric – what the difference means

The dividing line between diesel-hydraulic and diesel-electric transmission is historically charged in Germany, yet still easy for spotters to understand.

An older diesel-electric representative from the same works tradition is the MaK DE 1002 – a good comparison for seeing how the design has changed over the decades.

Its place in railway operations

Task	Suitability of the DE 12	Note
Shunting and delivery to sidings	very good	Sensitive tractive-effort control, view in both directions
Transfer runs	very good	Fit for mainline running with normal train lengths
Works and port traffic	very good	High starting tractive effort at low speed
Light mainline freight trains	good	Power class covers shorter trains
Heavy long-distance freight trains	limited	Larger types are intended for this

The row about starting is worth noting: that’s exactly where the diesel-electric design plays to its strength. Because tractive effort can be controlled continuously via the traction motors, the driver can set a heavy group of wagons in motion very gently without jerking the couplings. On hydraulic locomotives, the torque converter in the transmission takes care of this – also effective, but with a different control behaviour.

This overview also reveals where you’ll typically find the locomotive: freight hubs, private sidings, transshipment terminals and industrial areas with a rail connection. Such duties don’t appear in any public timetable, but often follow fixed daily rhythms. The guide to spotting at a marshalling yard describes how to explore such territories systematically and within the rules.

Identification in practice

Identification follows the same pattern for all modern Kiel locomotives, and it pays to stick to the order.

First comes the running gear: four axles in two bogies. Then the cab position: in the centre, not at one end. Then the design language: smooth and tidy rather than angular and technical as on the older BB types. Only then do you move on to the fine distinctions, and for that you need lettering – the type marking on the cab or bonnet, or failing that the vehicle number in the data panel.

This order – coarse to fine, observation before lettering – works for practically any unfamiliar vehicle. It is described in detail in the guide to identifying classes; the structure of the twelve-digit number is explained in the article on the UIC number.

The German diesel locomotive system as background

If you want to place modern manufacturer designations such as DE 12, you’ll get there faster if you know the established order behind them.

Until 1968, German diesel locomotives carried V designations. The V stood for Verbrennungsmotor (combustion engine), and the number was a rough indication of power: V 60 the heavy shunter, V 100 the general-purpose locomotive of medium power, V 200 the large mainline locomotive. With the 1968 renumbering, these became computer-friendly three-digit class numbers – the V 100 became Classes 211 and 212, the V 60 became the 260 and 261. To this day, many railway fans say “V 100” when they mean a 212.

Alongside this there is the operational distinction between mainline locomotive and shunter. Mainline diesel locomotives are approved for longer journeys and through train workings and carry the type code 92 in the UIC system. Pure shunting and small locomotives get 98. Despite its shunting-friendly layout, the DE 12 is a 92 – it is allowed, and meant, to go out on the main line too.

The third level is the transmission, and that’s exactly what’s built into the name of the Kiel types. A G means hydraulic transmission, a DE diesel-electric drive. This distinction is older than the current locomotive family and runs through the manufacturer’s entire history.

Taken together, all three levels explain why a single vehicle can have several valid names: a manufacturer type, a class number and a full NVR number (the European vehicle register number). For sightings, the last is always the most reliable, because it identifies exactly one machine.

Common mix-ups

Verdict

The Vossloh DE 12 is a vehicle whose essentials remain invisible. From the outside it’s a modern four-axle locomotive with a centre cab; what distinguishes it from its hydraulic sister comes down to two letters and the data sheet. That’s exactly why, with this family, reading matters more than looking.