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#1764

GS&WR Class 400

🇮🇪 Ireland ·built by Armstrong Whitworth· from 1916· class of 10 Irish 4-6-0 locomotives

what is it?

The GS&WR 400 class or CIE class B2/B2a were a class of ten 4-6-0 steam locomotives built for the Great Southern & Western Railway (GS&WR) between 1916 and 1923 for express passenger duties on the Dublin to Cork main line. They proved initially unreliable but rebuilds from four to two cylinders between 1927 and 1937 for the seven survivors produced locomotives yielding satisfactory performance with the last two being withdrawn in 1961.

who runs it

base stats

  • built 10made in total

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 110 years ago, in 1916.
  • Served for 45 years (1916–1961).

steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.

spec sheet

built
1916–1923
in service from
1916
retired
1961
status
retired
number built
10
kind
steam
traction
steam
origin
🇮🇪 Ireland
builders
Armstrong Whitworth, Inchicore Works
designer
E. A. Watson
operators
Great Southern and Western Railway, Córas Iompair Éireann, Great Southern Railways
top speed
—
power
—
gauge
1,600 mm Irish broad gauge
wheel arrangement
4-6-0

From the Wikipedia infobox and Wikidata. Blank means the sources don't say.

Sources: Wikidata Q24088482, Wikipedia: GS&WR Class 400 (CC BY-SA 4.0).Updated 2026-10-25.

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