#1942
G&SWR 540 Class
🇬🇧 United Kingdom ·built by North British Locomotive Company· from 1922· class of 6 British 4-6-4T locomotives
1 photo from Wikimedia Commons · credits & licences
- 1. Express tank locomotive G&SWR Class 540 No. 545: Unknown photographer· Public domain
what is it?
The Glasgow and South Western Railway 540 Class were 4-6-4T steam tank locomotives designed by Robert Whitelegg and built in 1922, shortly before the G&SWR was absorbed into the London, Midland and Scottish Railway (LMS). They were referred to in official G&SWR publicity as the Baltic Class, although they were also known more prosaically to enginemen as the 'Big Pugs'.
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 104 years ago, in 1922.
- Served for 14 years (1922–1936).
steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.
spec sheet
- built
- 1922
- in service from
- 1922
- retired
- 1936
- status
- retired
- number built
- 6
- kind
- Steam
- traction
- steam
- origin
- 🇬🇧 United Kingdom
- builders
- North British Locomotive Company
- designer
- Robert Whitelegg
- operators
- Glasgow and South Western Railway, London, Midland and Scottish Railway
- top speed
- —
- power
- —
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- 4-6-4T
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q24088452, Wikipedia: G&SWR 540 Class (CC BY-SA 4.0).Updated 2026-10-25.