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Class 37
Class 37: a diesel-electric locomotive (Co-Co (UIC Co'Co')), built by English Electric, Vulcan Foundry and Robert Stephenson and Hawthorns, 1960-1965. A freight locomotive: not drawn yet (set FRT).
Drawing to come
- Type
- diesel-electric locomotive
- Builder
- English Electric, Vulcan Foundry and Robert Stephenson and Hawthorns
- Built
- 1960-1965
- In service
- since 1960
- Top speed
- 90 mph (145 km/h)
- Power
- 1,305 kW (1,750 hp); English Electric 12CSVT; DC motors (37/4+ Brush alternator) · how it works
- Profile
- main-line
- Status
- Still working: Colas infrastructure/freight, Europhoenix (hired to ROG), Loram (37418), HNRC; DRS retired its fleet in 2024; Network Rail uses rebuilt 97/3. 80 mph (129 km/h) with CP7 bogies; weight 102-107 t (37/7 ballasted to 122 t).
unverified Some of these figures haven’t yet been checked against an official source or a published history. What’s in doubt ↓
Sources
How we source figures → · Spotted a mistake? Tell us → (opens in a new tab)
- British Rail Class 37 Wikipedia (secondary; must be paired), 2026-10-25infobox, 2024 fleet summary
- Europhoenix Rail Ltd to continue after buy-out by aggregates firm RAIL magazine, 2026-07-3111 Europhoenix
- Direct Rail Services announces retirement of Class 37 locomotives Direct Rail Services, 2024-01-22DRS retirement
- Colas Rail Wikipedia (secondary; must be paired), 2026-10-25Colas 8
unverified
- Single secondary source for dimensions. 61 ft 6 in (18,750 mm) is the infobox 'length' (not stated as over buffers).
- Bogie data not given (overall wheelbase 50 ft 8 in (15,440 mm)).
- Per-operator counts are 2024-26 Wikipedia/RAIL figures; the Wikipedia table counts and number lists disagree for LSL and HNRC.
- Power given is the engine rating for the class; refurbished sub-classes differ.
- Not drawn: no drawing yet; the dimensions are in freight_data and their sources in dimension_sources (set FRT, October 2026)
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