what is it?
The steam locomotives of Oldenburg Class P 4.1 (later DRG Class 36.12) were German locomotives built for the Grand Duchy of Oldenburg State Railways (Großherzoglich Oldenburgische Staatseisenbahnen) between 1896 and 1902. They were based on a Prussian P 4.1 prototype and a total of 19 engines were procured up to 1902. Overall the Oldenburg engine was less powerful than its Prussian counterpart, because the grate area was smaller and the steam dome was omitted.
who runs it
base stats
Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.
fun facts
- First built 130 years ago, in 1896.
- Weighs about as much as 7 African elephants (~6 t each).
- 15.3 m long: about 3 cars parked nose to tail.
- Served for 35 years (1896–1931).
steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.
spec sheet
- built
- 1896–1902
- in service from
- 1896
- retired
- 1931
- status
- retired
- number built
- 19
- kind
- steam locomotive
- traction
- steam
- origin
- 🇩🇪 Germany
- builders
- Hanomag
- operators
- Grand Duchy of Oldenburg State Railways, Deutsche Reichsbahn
- top speed
- 90 km/h
- power
- —
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- 4-4-0
- length
- 15.3 m
- weight
- 40 t
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q1742936, Wikipedia: Oldenburg P 4.1 (CC BY-SA 4.0).Updated 2026-10-25.