Brush Type 4 British Rail Class 47
A Class 47 atBirmingham New Street in 1987
Type and origin Power type Diesel-electric Builder Brush Traction British RailCrewe Works Build date 1962–1968 Total produced 512
Specifications Configuration: ​  • UIC Co′Co′  • Commonwealth Co-Co Gauge 4 ft 8+1⁄2 in (1,435 mm)standard gauge Wheel diameter 3 ft 9 in (1.143 m) Wheelbase 51 ft 6 in (15.70 m) Length 63 ft 7 in (19.38 m) Width 8 ft 10 in (2.69 m) Height 12 ft9+1⁄2 in (3.90 m) Loco weight 112long tons (114 t; 125short tons) to 125 long tons (127 t; 140 short tons) Fuel capacity 850 imp gal (3,900 L; 1,020 US gal) Prime mover Sulzer 12LDA28-C MU working Not fitted when built. Some now retrofitted with● Green Circle orTDM Train heating 47/0:Steam generator 47/3: None 47/4:Electric Train Heat Train brakes Vacuum,Air, orDual
Performance figures Maximum speed 75 mph (121 km/h) or 95 mph (153 km/h) 100 mph (160 km/h) [47/7] Power output Engine: originally 2,750 bhp (2,050 kW), later derated to 2,580 bhp (1,920 kW) Tractive effort Maximum: 55,000 lbf (245 kN) to 60,000 lbf (267 kN) Brakeforce 61long tons-force (608 kN)
Career Operators British Rail English Welsh & Scottish Colas Rail Direct Rail Services GB Railfreight Harry Needle Railroad Company Riviera Trains West Coast Railways Rail Operations Group Numbers D1500–D1999, D1100–D1111 later 47 001–47 981 Axle load class Route availability 6 or 7 Withdrawn 1965 (2), 1969 (1), 1971 (1), 1980 (1), 1986–present Disposition 32 preserved, 33 converted toClass 57, 51 still in service, remainder scrapped

TheBritish Rail Class 47 orBrush Type 4 is a class ofdiesel-electric locomotive that was developed in the 1960s byBrush Traction. A total of 512 Class 47s were built at Brush's Falcon Works inLoughborough and at British Railways'Crewe Works between 1962 and 1968, which made them the most numerous class of British mainline diesel locomotive.

They were fitted with theSulzer 12LDA28Ctwin-bank twelve-cylinder unit producing 2,750 bhp (2,050 kW) – though this was later derated to 2,580 bhp (1,920 kW) to improve reliability – and have been used on both passenger and freight trains on Britain's railways for over 55 years. Despite the introduction of more modern types of traction, a significant number are still in use, both on the mainline and onheritage railways.

As of July 2024^[update], 76 locomotives still exist as Class 47s, including 32 which have been preserved. 31 locomotives, including six which are preserved, retain mainline running certificates. A further 33 locomotives were converted toClass 57s between 1998 and 2004.

The Class 47 history began in the early 1960s with the stated aim of theBritish Transport Commission (BTC) to removesteam locomotives fromBritish Rail by a target date of 1968.^[1] It therefore required a large build ofType 4 but with anaxle load of no more than 19 long tons (19.3 t). The BTC was not convinced that the future of diesel traction lay down thehydraulic transmission path of theWestern Region, and concentrated ondiesel-electric designs.

Initially, the BTC invited tenders to build 100 locomotives to the new specification. The following responses were received:

• A consortium of theBirmingham Railway Carriage and Wagon Company,Associated Electrical Industries andSulzer offered a production version of theirD0260Lion^[2] prototype under construction at the time, with both steam and electric heating
• Brush Traction offered three options: a production version of their twin-enginedD0280Falcon^[3] prototype under construction, or a single engine design using either a Sulzer engine or theEnglish Electric 16CSVT, including steam heating with an option for electric heating
• English Electric offered a design based on the eventualDP2 prototype
• North British Locomotive Company offered a Sulzer-powered design with steam and electric heating

Of these bids, the BRCW/AEI/Sulzer bid was the preferred option, but before the prototypes could be assessed, the need to build a large number of locomotives quickly was deemed paramount, and the BTC decided on a new approach: it decided to cancel the final order of twentyClass 46 locomotives and invite bids for twenty locomotives of the new Type 4 specification using the Brush electrical equipment intended for the cancelled order. Brush won the contract.^[4][5]

This initial build of 20 locomotives (Nos. D1500 to D1519) were mechanically different from the remainder of the type,^[6] usingWestinghouse-supplied brake systems, and would be withdrawn earlier than the rest of the class which usedMetcalfe-Oerlikon brakes.

Based on the success of these initial 20 locomotives an order for 270 was made, which was later revised upwards a number of times to reach the final total of 512. 310 locomotives were constructed by Brush in Loughborough, and the remaining 202 at BR's Crewe Works.^[7] Five locomotives, Nos. D1702 to D1706, were fitted with a SulzerV12 12LVA24 power unit and classified asClass 48s; the experiment was not deemed a success, and they were later converted to standard 47s.

The locomotives were ordered in 6 batches as follows:^[8]

• D1500–D1519, 28 February 1961.
• D1520–D1681, 1 January 1962.
• D1682–D1706, 4 September 1962.
• D1707–D1781, 28 September 1962.
• D1782–D1861, 22 July 1963.
• D1862–D1999 & D1100–D1111, 24 March 1964.

Distribution of locomotives,
March 1974^[9]

HA IS
BR BS CD CF GD HO IM KY LE TE TI TO YK
CW FP OC SF
Code	Name	Quantity
BR	Bristol Bath Road	41
BS	Bescot	51
CD	Crewe Diesel	80
CF	Cardiff Canton	53
CW	Cricklewood	3
FP	Finsbury Park	12
GD	Gateshead	28
HA	Haymarket	8
HO	Holbeck	11
IM	Immingham	41
IS	Inverness	1
KY	Knottingley	10
LE	Landore	27
OC	Old Oak Common	24
SF	Stratford	30
TE	Thornaby	11
TI	Tinsley	48
TO	Toton	21
YK	York	8
Withdrawn (1965–71)		4
Total built:		512

The first 500 locomotives were numbered sequentially from D1500 to D1999, with the remaining twelve being numbered from D1100 to D1111. The locomotives went to work on passenger and freight duties on all regions of British Rail. Large numbers went to replace steam locomotives, especially on express passenger duties.^[10]

The locomotives, bar a batch of 81 built for freight duties, were all fitted withsteam heating boilers for train heat duties. The initial batch of twenty, plus D1960 and D1961, were also fitted withelectric train heating (ETH).^[11] With this type of heating becoming standard, a further large number of locomotives were later fitted with this equipment.

In the mid-1960s, it was decided tode-rate the engine output of the fleet from 2,750 bhp (2,050 kW) to 2,580 bhp (1,920 kW), significantly improving reliability by reducing stresses on the power plant, whilst not causing a noticeable reduction in performance.^[12]

In the early 1970s, the fleet was renumbered into the 47xxx series to conform with the computerisedTOPS systems. This enabled a number of easily recognisable sub-classes to be created, depending on the differing equipment fitted. The original series were based on train heating capability and were as follows;^[13]

• Class 47/0: Locomotives with steam heating equipment.^[14]
• Class 47/3: Locomotives with no train heating.^[14]
• Class 47/4: Locomotives with dual or electric train heating.^[14]

However, this numbering system was later disrupted as locomotives were fitted with extra equipment and were renumbered into other sub-classes.^[15][16] For an overview of the renumbering see theList of British Rail Class 47 locomotives. This section summarises the main sub-classes that were created.

Originally numbered D1520–1781, D1837–74, D1901–59, D1962–99 and D1100 (later given TOPS numbers from 47001 to 47298), these locomotives were the "basic" Class 47 with steam heating equipment fitted.^[17][16] In the 1970s and 1980s, with steam heating of trains gradually being phased out, all locomotives fitted with the equipment gradually had their steam heating boilers removed. Some were fitted with ETH and became 47/4s, whilst the others remained with no train heating capability and were therefore used mainly on freight work. In the 1990s, the class designation 47/2 was applied to some class 47/0s and class 47/3s after they were fitted withmultiple working equipment.^[18] The locomotives involved also had theirvacuum braking systems removed or isolated, leaving themair braked only. This was mainly a paper exercise, however, and the locomotives were not renumbered; in this article they are included in Class 47/0.

Originally numbered D1782–1836 and D1875–1900 (later given TOPS numbers from 47301 to 47381), this sub-class was originally built with no train heating equipment and therefore remained as freight locomotives almost exclusively for their working lives.^[17][19] They were all fitted withslow speed control for workingMGR coal trains (as were a number of Class 47/0s).^[20] However, during the summer months when train heat was not required, 47/3s could regularly be found hauling the extra trains that the holiday season brought.^[21] The sub-type remained stable until withdrawals started, although an "extra" 47/3, 47300, was created in 1992 when 47468 had its train heating equipment removed and was renumbered.^[22] This was a direct replacement for collision damaged 47343. Also, 47364 was renumbered to 47981 in 1993 for use on RTC test trains.^[23]

The designation for standard locomotives fitted with ETH and therefore used for passenger,mail and parcels use. The original batch of twenty locomotives (D1500–D1519) were built with dual steam and electric train heating,^[17] the electric heating being tapped from the locomotive's DC generator. However, no more were constructed in this way until 1967 when the final two Brush-built locomotives, D1960 and D1961,^[18] were fitted with a new type of electric heat system using an ACalternator.^[24] Approximately 112 more locomotives had been fitted with this system by the time TOPS renumbering occurred (some of which retained the steam heat facility following ETH fitment whilst others had it removed at that time),^[25] and shortly afterwards the sub-class had settled down to 154 locomotives, numbered 47401–47547 and 47549–47555. Later, further Class 47/0s were converted to Class 47/4s and renumbered into the series from 47556 onwards, which eventually reached 47665.^[18]

After being severely damaged in a derailment near Peterborough in 1974, locomotive 47046 was selected to be a testbed for the projectedClass 56, and was fitted with a 16-cylinderRuston 16RK3CT engine rated at 3,250 bhp (2,420 kW) for assessment purposes.^[26] To identify it as unique, it was renumbered 47601 (at the time the number range for Class 47s only extended as far as 47555). Later, in 1979, it was used again for theClass 58 project, fitted with a 12-cylinder Ruston engine (this time of 3,300 bhp (2,500 kW)), and renumbered 47901. It continued with this non-standard engine fitted until its withdrawal in 1990.^[16]

In the late 1970s, BR authorities identified a need to replace the ageing trains operating theGlasgow toEdinburgh shuttle services, in order to increase speed and reliability. The trains were operated by pairs ofClass 27s, one at each end of this train. It was decided to convert twelve 47/4s to operate the service inpush-pull mode. The locomotives would be known as Class 47/7 and would be fitted withTDM push-pull equipment^[27] and long-range fuel tanks, and be maintained to operate at 100 mph (160 km/h). The conversions began in 1979 and the service was operated completely by them from 1980. In 1985, the push-pull service spread to Glasgow-Aberdeen services, and a further four locomotives were converted. The sub-class therefore comprised 47701 to 47716, though a further locomotive, 47717, was converted in 1988 after the fire-damaged 47713 was withdrawn.^[28]

In the 1990s, further 47/4s were converted with long-range fuel tanks and equipment to allow them to work with a type ofrolling stock known aspropelling control vehicles-PCV, which utilised RCH (Railway Clearing House) cables to allow the PCV driver to signal to the driver on the locomotive to apply power and operate the brakes - neither these locomotives nor the PCVs were equipped withTDM push-pull equipment. They were also numbered into the 47/7 series, from 47721 onwards. With dwindling passenger work for them, a number of 47/8s, already fitted with the extra fuel tanks, were also renumbered into this series.^[16]

Two locomotives, 47798Prince William and 47799Prince Henry, were dedicated for use on theRoyal Train, and were designated as Class 47/7c.^[16] The two locomotives were replaced by a pair ofClass 67 locomotives in 2004, and were subsequently withdrawn for preservation.

The last of the original 47/4 conversions, from 47650 to 47665, were fitted with extra fuel tanks, giving them an extended range. Four earlier Class 47/4s were also converted. In 1989 it was decided to make these locomotives easily recognisable and so they were renumbered into their own series from 47801 to 47820. At the same time, further locomotives were fitted with extra fuel tanks and renumbered; the series eventually reached 47854.^[18] After theprivatisation of British Rail, the locomotives in the 47/8 number range were mainly used byVirgin CrossCountry oncross-country work until the introduction ofClass 220Voyager trains. These duties have kept them maintained in serviceable condition, allowing them to remain operational longer than the majority of their classmates. As a consequence most of them received relatively recent overhauls. The locomotives in this number range are officially Class 47/4s under the TOPS system.^[16]

By 1986, only five of the original 512 locomotives had been withdrawn from service, all because of serious accident damage.^[29] However, with work for the class declining due to the introduction of new rolling stock and spare parts becoming difficult to source, some inroads started being made.

The first locomotives to be targeted were the non-standard pilot batch of 20, now numbered 47401-47420. Three locomotives were withdrawn as life-expired in February 1986 and the remainder of the batch that had not recently been overhauled followed in the next two years. All 20 were withdrawn by 1992.^[30]

Meanwhile, BR drew up a 'hit-list' of locomotives for early withdrawal, mainly including those with non-standard electrical equipment, known asseries parallel locomotives.^{[citation needed]} In the outset, withdrawals were slow, mainly due to the surplus of spare parts and new flows of freight traffic which required extra locomotives; only 61 locomotives had been withdrawn by the end of 1992. However, with the introduction of new locomotives, the rate of withdrawal quickly rose, with 86 more 47s reaching the end of their lives in the next three years.^[29] With most of the non-standard locomotives withdrawn, the reduction of the fleet again proceeded more slowly. The privatisation of British Rail also resulted in new independent rail companies needing available traction until they could order new locomotives. From 1996 to 2006, an average of around fifteen locomotives per year were taken out of service.^[29]

During the decline in passenger work a number of locomotives were painted in "celebrity" colours, depicting various liveries that the type had carried during its history. This continued a tradition of painting 47s in unusual liveries, which dates back to 1977, whenStratford depot in East London painted two locomotives with hugeUnion Flags to celebrate theSilver Jubilee of Queen Elizabeth II.^[31]

Mainline registered locomotives as of January 2023^[update]. This table does not include 47375, which was exported to Hungary in 2015.^[32] West Coast Railways is currently the largest operator of the type,^[33] though they began scrapping their stored locomotives in January 2023.^[34]

There are 31 Class 47 locomotives in the ownership of preservationists and private railways.^[37]

Thirty-three locomotives were rebuilt withEMD engines and re-classified asClass 57s.^[38][39]Freightliner took 12,Virgin Trains 16 andFirst Great Western five. Today these are owned byDirect Rail Services (17),Great Western Railway (4),Rail Operations Group (4), andWest Coast Railways (8, including the prototype passenger engine 57 601).

• 11 January 1965: D1734 was severely damaged afterthe freight train it was hauling ran out of control nearShrewsbury, eventually demolishing asignal box. It was withdrawn two months later, becoming the first Class 47 withdrawn after a working life of only eight months.^[40] Withdrawn in March 1965, it was cut up in April.^[41]
• 17 December 1965: D1671THOR was derailed nearBridgend whilst hauling a train of empty coaches.^[42] Shortly afterwards, a freight train collided heavily with the wreckage, killing the driver and second man of this locomotive.^[16] D1671 was withdrawn in April 1966; its nameplates were salvaged, and transferred to No. D1677; and D1671 was cut up in June 1966.^[43]
• 8 April 1969: D1908 was badly damaged when, while hauling a freight train atMonmore Green, it was struck head-on by a passenger train that had passed a signal at danger. D1908 caught fire after the accident and became the third Class 47 withdrawn. The driver of the freight train and the passenger train driver were killed.^[16] Withdrawn in August 1969, it was cut up in October.^[44]
• 13 March 1971: D1562 was wrecked after severe fire damage atHaughley Junction while the locomotive was hauling aLiverpool Street toNorwich express.^[16] It was withdrawn in June 1971 and cut up in September.^[45]
• 11 June 1972: D1630 was involved in theEltham Well Hall rail crash in which six people were killed. The locomotive was repaired, but much later in its life when numbered 47849, it was withdrawn from the Class 57 rebuilding programme after damage was discovered which was thought to have dated back to the accident.^[16]
• 25 August 1974: 47236 was hauling a passenger train that passed a signal at danger and was derailed atDorchester West. Eighteen people were injured.^[46]
• 16 March 1976: 47274 collided with a lorry that had fallen from a bridge onto the line nearEastriggs. The drivers of both the train and the lorry were killed.^[47]
• 5 September 1977: 47402 was hauling a mail train when it was in a head-on collision with adiesel multiple unit at Farnley Junction,Leeds,West Yorkshire due to a signalling fault. Both drivers were killed and fifteen were injured.^[48]
• 22 October 1979: 47208 suffered severe damage in a fatalaccident at Invergowrie in Scotland. It was hauling aGlasgow toAberdeen service which collided with a local train which had stopped in front.^[49] The locomotive was withdrawn in January 1980 and cut up in April.^[50]
• 8 December 1981: 47409 was hauling a York to Liverpool express which derailed 1,600 feet (500 m) north ofUlleskelf. Whilst the locomotive stayed upright, all the carriages derailed and carriages six and seven rolled down a steep bank. This resulted in 24 people requiring hospitalisation with nine of those being serious. One man later died of his injuries. The cause of the derailment was found to be a crack in one of the rails of the Up Normanton line.^[51]
• 9 December 1983: 47299 (formerly 47216) was involved in aserious accident at Wrawby Junction inLincolnshire, when whilst hauling an oil train, the locomotive collided with a local train resulting in the death of a passenger. It later emerged that the locomotive's renumbering was allegedly due to a warning given to BR by a clairvoyant who claimed to have foreseen a serious accident involving a locomotive numbered "47216".^[52]
• 30 July 1984: 47707Holyrood was propelling the 17:30 express fromEdinburgh toGlasgow from the rear, whenthe train collided with a cow near Polmont and was derailed, resulting in 13 deaths. The accident raised serious concerns about the safety of push-pull operation where the locomotive was at the rear of the train.^[53]
• 20 December 1984:Summit Tunnel fire: Locomotive 47125 was hauling a freight train of petrol tankers which derailed and caught fire inSummit Tunnel, on theLancashire/West Yorkshire border.^[54]
• 18 January 1986: 47111 was run into by aClass 104diesel multiple unit which had a brake failure and had passed three signals at danger atPreston. Forty-four people were injured.^[55]
• 9 March 1986: 47334 was one of two light engines that were hit head-on by a passenger train atChinley,Derbyshire due to a signalman's error. One person was killed. Lack of training and a power cut were contributory factors.^[56]
• 20 February 1987: 47089Amazon was hauling a freight train that ran away and was derailed by trap points at North Junction,Chinley,Derbyshire. Another train ran into the wreckage and was derailed.^[57]
• 24 March 1987: 47202 was hauling a freight train that overran signals and was in a head-on collision with a passenger train (hauled by33 032) at Frome North Junction,Somerset. Fifteen people were injured, some seriously.^[58][59]

In 1976, 47155 was moved to West Thurrock power station for use as a stationary generator while problems with one of the plant's auxiliary generators were investigated. The locomotive was removed from its bogies and mounted on a heavy timber frame.^[60]

In 1976Hornby Railways launched its first version of the BR Class 47 inOO gauge.^[61]Lima produced a range of Class 47 models in OO gauge.^[62] In 2009, Italian manufacturer ViTrains introduced their OO gauge model of the Class 47 in three liveries.^[63] In 2013, aBR Blue version of D1662Isambard Kingdom Brunel was commissioned byModelzone, based onBachmann'sOO gauge model. The production run was a limited edition of 512 models.^[64]

In 2009,Bachmann released aBritish N gauge version of 47404Hadrian in BR Blue.^[65] In 2010, Bachmann issued a British N gauge model of 47474Sir Rowland Hill in Parcels Sector red and grey livery.^[66]

• 
  1844 (47194) in original two tone green livery, Paddington 1971
• 
  Class 47/0 No.47100 in the modifiedRail Blue livery with a silver roof, used byStratford TMD
• 
  47602Glorious Devon inInterCity livery, Southampton 1989
• 
  Class 47/7a No.47702 inScotRail livery
• 
  47376Freightliner 1995 inFreightliner livery at St Denys, 1998
• 
  47774Poste Restante inRail Express Systems livery at Kings Cross in 1998
• 
  Class 47/7a No.47714 inAnglia Railways livery
• 
  Class 47/4 No. 47818, inOne livery atCambridge station in 2004
• 
  Class 47/3 No. 47316Cam Peak, carrying the livery ofCotswold Rail
• 
  Class 47/0 No. 47237, inAdvenza Freight livery andClass 57 No. 57005 inFreightliner livery atDerby railway station in 2008
• 
  47245 in West Coast Railway livery, St Denys 2013
• 
  Preserved 47715Poseidon at theNational Railway Museum in 2005
• 
  47530 inNetwork SouthEast livery atReading in 1991
• 
  Class 47/4(er) 47817 in earlyPorterbrook livery atBournemouth in 1997

Between 1963 and 1966, ten locomotives similar to the British Rail Class 47 were supplied toFerrocarriles de Cuba (Cuban National Railways).^[67] Although built by Brush, they were publicly stated to be supplied byClayton Equipment Company.^[68]

• List of British Rail modern traction locomotive classes

• Stevens-Stratten, S.W.; Carter, R.S. (1978).British Rail Main-Line Diesels. Shepperton: Ian Allan Ltd.ISBN 978-0-7110-0617-1.
• Toms, George (1978).Brush Diesel Locomotives, 1940-78. Sheffield: Turntable Publications.ISBN 978-0902844483.OCLC 11213057.

• Derrick, Kevin (2013).Looking back at Class 47 Locomotives. Strathwood.ISBN 9781905276233.
• Lilley, Simon (2012).Class 47: 50 Years of Locomotive History. OPC.ISBN 9780860936480.OCLC 794815314.
• Loader, Martin (1998).Class 47 Photo File. Vanguard Publications.ISBN 9781900872041.OCLC 650096345.
• Marsden, Colin J.; Fenn, Graham B. (1988).British Rail Main Line Diesel Locomotives. Sparkford: Haynes. pp. 200–211.ISBN 9780860933182.OCLC 17916362.
• Meskell, Nick (2006).Class 47/8s. Train Crazy Publishing.ISBN 9780954803551.OCLC 190776405.
• Morrison, Brian (1987).Profile of the 47s. OPC.ISBN 9780860932406.OCLC 16924495.
• Morrison, Gavin (2011).BR Brush Class 47: 48 Years of Different Livieries. Book Law Publications.ISBN 9781907094668.OCLC 751709977.
• Morrison, Gavin (1999).Class 47s. Ian Allan.ISBN 9780711026773.OCLC 41503765.
• Ringer, Brian (1979).Brush-Sulzer Class 47 Diesel-Electrics. Bradford Barton.ISBN 9780851533261.OCLC 16431685.
• Tayler, A.T.H.; Thorley, W.G.F.; Hill, T.J. (1979).Class 47 Diesels. Ian Allan.ISBN 9780711009158.OCLC 6425727.
• Taylor, Ross (2016).Class 47 and 57 Locomotives. Amberley Publishing.ISBN 9781445658636.OCLC 934603465.
• Vaughan, John (2007).Diesel Retrospective: Class 47. Ian Allan.ISBN 9780711032019.OCLC 163322802.
• Vehicle Diagram Book No. 100 for Main Line Diesel Locomotives(PDF). Derby: British Railways Board. October 1984. pp. 27–32,37–38, 110–135 (per pdf) – via Barrowmore MRG.
• British Rail Class 47s. Peter Watts. 1980.ISBN 9780906025130.OCLC 655703332.
• Kerr, Fred (August 1983). "Big Brushes that swept clean!".Rail Enthusiast. EMAP National Publications. pp. 34–39.ISSN 0262-561X.OCLC 49957965.
• Kerr, Fred (October 1983). "The big Brushes - part two".Rail Enthusiast. EMAP National Publications. pp. 10–14.ISSN 0262-561X.OCLC 49957965.

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