#1799
SECR K and SR K1 classes
🇬🇧 United Kingdom ·built by Armstrong Whitworth· from 1917· two classes of 20 two-cylinder (K) and 1 three-cylinder (K1) 2-6-4T locomotives
1 photo from Wikimedia Commons · credits & licences
- 1. SECR K class prototype 790: The original uploader was Bulleid Pacific at English Wikipedia .· Public domain
what is it?
The SECR K class was a type of 2-6-4 tank locomotive designed in 1914 by Richard Maunsell for express passenger duties on the South Eastern and Chatham Railway (SECR), which operated between London and south-east England. The Southern Railway (SR) K1 class was a three-cylinder variant of the K class, designed in 1925 to suit a narrower loading gauge. They were among the first non-Great Western Railway (GWR) types to use and improve upon the basic design principles of power and standardisation established by GWR Chief Mechanical Engineer (CME) George Jackson Churchward.
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 109 years ago, in 1917.
- 13.1 m long: about 3 cars parked nose to tail.
- Served for 11 years (1917–1928).
steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.
spec sheet
- built
- 1917–1926
- in service from
- 1917
- retired
- 1928
- status
- retired
- number built
- 21
- kind
- Steam
- traction
- steam
- origin
- 🇬🇧 United Kingdom
- builders
- Armstrong Whitworth, Ashford Works, Brighton Works
- designer
- Richard Maunsell
- operators
- Southern Railway, South Eastern and Chatham Railway
- top speed
- —
- power
- —
- wheel arrangement
- 2-6-4T
- length
- 13.1 m
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q7389608, Wikipedia: SECR K and SR K1 classes (CC BY-SA 4.0).Updated 2026-10-25.