#1651
NZR WW class
🇳🇿 New Zealand ·built by New Zealand Railways Department· from 1913· class of 50 (+14) New Zealand 4-6-4T locomotives
1 photo from Wikimedia Commons · credits & licences
- 1. Ww644: Hayden Booth· CC BY-SA 3.0
what is it?
The NZR WW class was a class of 4-6-4T tank locomotives that operated on the New Zealand national railway network. They were built for New Zealand Railways Department (NZR), and were the final development of the six-coupled tank engine in New Zealand, the penultimate class of tank locomotives to be built for NZR, and the first class of tank locomotives to be built with superheaters.
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 113 years ago, in 1913.
- 11 m long: about 2 cars parked nose to tail.
- Served for 56 years (1913–1969).
steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.
spec sheet
- built
- 1913–1919
- in service from
- 1913
- retired
- 1969
- status
- preserved
- number built
- 50
- kind
- Steam
- traction
- steam
- origin
- 🇳🇿 New Zealand
- builders
- New Zealand Railways Department, Hillside Engineering, Addington Railway Workshops, Hillside Railway Workshops
- designer
- A. L. Beattie
- operators
- New Zealand Railways Department
- top speed
- —
- power
- —
- gauge
- 1,067 mm Cape gauge
- wheel arrangement
- 4-6-4T
- length
- 11 m
- nicknames
- "Bobtails"
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q16927150, Wikipedia: NZR WW class (CC BY-SA 4.0).Updated 2026-10-25.