#0599
GWR 3521 Class
🇬🇧 United Kingdom ·built by Great Western Railway· from 1887· class of British 0-4-2T, 0-4-4T and 4-4-0 locomotives
what is it?
The 3521 Class were forty tank locomotives designed by William Dean to haul passenger trains on the Great Western Railway. They were introduced as 0-4-2T locomotives in 1887, but were quickly altered to become 0-4-4Ts to improve their running. Following two serious accidents they were further altered from 1899 to run as 4-4-0 tender locomotives, in which form the last was withdrawn in 1934.
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 139 years ago, in 1887.
- Served for 47 years (1887–1934).
steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.
spec sheet
- built
- 1887–1889
- in service from
- 1887
- retired
- 1934
- status
- retired
- number built
- 40
- kind
- Steam
- traction
- steam
- origin
- 🇬🇧 United Kingdom
- builders
- Great Western Railway, Swindon Works
- designer
- William Dean
- operators
- Great Western Railway
- top speed
- —
- power
- —
- wheel arrangement
- Lot 73: 0-4-2T
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q5514942, Wikipedia: GWR 3521 Class (CC BY-SA 4.0).Updated 2026-10-25.