Locomotives used during the EAR years from 1948 onwards will be covered in Part 16 of this series of articles.

The featured image for this article is Tanganyika Railways 2-8-2 No. 802 of the MacArthur austerity class at Tabora in the early 1950s before its conversion to oil fuel. [1: p68]

Locomotives in the Years of German East Africa:

UE Class 0-4-2T Locomotives

The Tanga Line (or Usambarabahn) was constructed over a relatively long period, starting in 1893, reached Korogwe in 1905 and Moshi in 1912. Initially the line was operated by five 0-4-2 tank locomotives. Ramear tells us that these five locomotives were built in 1893 by Vulcan (Vulkan) of Stettin. They were built to a standard design which Vulcan had standardised for use in Germany. [1: p19]

UE Nos. 6-10 Mallet Class of 0-4-4-0T Locomotives

UE Nos 11-14 Class 2-8-0T Locomotives

After the line was improved with curves being increased to 200m radius, 8-coupled locomotives became feasible. Ramaer tells us that “Four tank locomotives with a 2-8-0T wheel arrangement were built for the UE by Messrs Orenstein & Koppel in 1908 to a standardised tank engine design used on all German colonial railways in Africa. … They were a distinct improvement over the Mallets. Although they were designed to burn coal, the high price of imported coal meant that they remained on wood fuel, which must have given problems with fireboxes and ashpans.” [1: p19-20] Sadly these locomotives seem not to appear on the Wikipedia list of Orenstein & Koppel locomotives. [23]

For an illustration of this type of locomotive please see the OAEG 2-8-0T below.

UE Nos. 15-16 & Nos. 17-18 Class 2-8-0 Locomotives

These 2-8-0 tender locomotives were a significant improvement over the tank engines with a same wheel arrangement – with the side tanks removed and water carried in the tender the boiler size and weight could be increased. These were the last locomotives to eb supplied to the Usambarabahn and it operated with these locomotives well into the years of World War 1. [1: p20]

OAEG 0-4-0T Locomotives

Henschel of Kassel supplied 4 of these locomotives intended for the work of building the line. A further 4 of these locomotives were supplied, to the same design by, Henschel in 1909. [1: p21] In between these two batches of locomotive (in 1907) another 0-4-0T locomotive was put into service, the origins of this locomotive are obscure and it did not match the Henschel-built locomotives. Ramaer presumes that this locomotive was taken over from the contractor, Holzmann & Co. It was built by Markmaschinen (Works No. 26) in 1893. [1: p21, p27]

Ramaer notes that the Henschel engines “could be used as both coal and oil burners, and … had a bunker capacity of ton of coal besides 300 litres (66 gallons) of fuel oil. Their water capacity was 2 m³ (440 gallons). These little engines had a comparatively long life, surviving the war and the subsequent change to British management, and the last did not go out of service before the early 1930s.” [1: p23]

OAEG Henschel Mallet Class 0-4-4-0T Locomotives

Just as the Usambarabahn needed to invest in more powerful Mallet types of locomotive which could also accommodate the tight curves on the line, so the OAEG to ordered five comparable Mallet 0-4-4-0Ts, four of which were supplied by Henschel in 1905 and put in service during the first half of 1906 with the fifth following in 1907; like the 0-4-0s they were built for either coal or oil fuel. The OAEG found these Mallets not to be as effective as had been hoped and decided to order Mallets from Henschel with a different wheel arrangement. [1: p23]

OAEG Henschel Mallet Class 2-4-4-0T Locomotives

Henschel supplied a second batch of four locomotives in 1908 as 2-4-4-0Ts with larger boilers and cylinders. They also had a higher working pressure of 14 atmospheres (at) (200lb/sq in) in comparison to 12 at (170lb/sq in) for the earlier engines. While the bunker capacity had been increased from 1.2 to 2.2 tonnes of coal, oil fuel had been discarded. [1: p23]

Mallets proved to be expensive to run and the OAEG realised that if it were to be able to use suitably powered locomotives for the train loads envisaged, it would need to improve the alignment of the later sections of the Mittellandbahn and upgrade to trackwork. This allowed the OEAG to consider using rigid-bodied 8-coupled locomotives.

On the whole, the Mallets were not as successful as had been hoped, so it was something of a relief for the OAEG that it was able to use much larger radius curves once the more difficult topography close to the coast gave way to much flatter country. The OAEG was able to look at rigid-framed locomotives. With the invention of the Gölsdorf system [26][27] which allowed spring-controlled side-play in coupled axles at the end of the 19th century. Eight-coupled engines became more feasible. The OAEG took advantage of this innovation and began to introduce eight-coupled locomotives. Ramaer tells us that “The first solution tried was the 0-8-2 tank, built with the pony truck under the fuel bunker to make adhesion independent of diminishing supplies to the maximum possible extent, besides making riding somewhat more comfortable for the crew. High prices for imported coal from Europe had made the railway look for a cheaper alternative and these engines were the first to be built for wood fuel. Henschel supplied them in 1909 as works numbers 9301-2, running numbers 47-8.

OAEG 0-8-2T Locomotives Nos. 47 and 48

Ramaer tells us that “The first solution tried [by the OAEG] was the 0-8-2 tank, built with the pony truck under the fuel bunker to make adhesion independent of diminishing supplies to the maximum possible extent, besides making riding somewhat more comfortable for the crew. High prices for imported coal from Europe had made the railway look for a cheaper alternative and these engines were the first to be built for wood fuel. Henschel supplied them in 1909 as works numbers 9301-2, running numbers 47-8.” [1: p23]

OAEG 2-8-0T Locomotives Nos 41-44 (also UE 11-14)

Ramaer tells us that “Simultaneously, Borsig and Orenstein & Koppel introduced an alternative [to the 0-8-2T] and more logical solution in the shape of six 2-8-0T engines, also built for wood fuel. Both types, with only 5½ and 5 cubic metres water capacity respectively, normally carried auxiliary tenders for both water and firewood, besides hoses on the engine to allow for taking water en-route. … From this class and a comparable, but compound engine, supplied, also by Orenstein & Koppel, to South West Africa and Togo, a standardised 2-8-0T locomotive was developed, which was supplied to all German colonial lines in Africa. … Besides serving on other railways, it worked on the Usambarabahn, as described above, and was built for the OAEG by Borsig, O & K, Hanomag (or Georg Egestorff, as this firm was originally known) and Maffei to a total of eighteen engines in 1909-10. Including the engines of the first batches by O & K and Borsig of six locomotives, the total of the Einheitstenderlok (standard tank locomotive) classes amounted to twenty-four engines by the end of German rule.” [1: p25]

These locomotives were far better than the 0-8-2T locos, particularly in respect of their performance at speed. This was of some importance when maximum speeds were raised to 45km/h, and planning envisaged 60km/h (36mph) for the Dar es Salaam-Kigoma mail trains. “The standard tanks were a good, straightforward design and were kept in service for a fairly long period under British management; the last ones … being withdrawn in 1951.” [1: p25]

The series was made up of Orenstein & Koppel locomotives (Works Nos.3223-3226) built in 1909, OAEG Nos. 41-44; Borsig locomotives (Works Nos. 7143-7144) built in 1909, OAEG Nos. 45-46; Henschel locomotives (Works Nos. 9301-9302) built in 1909, OAEG Nos. 47-48; Borsig locomotives (Works Nos. 7153-7155) built in 1909, OAEG Nos. 49-51; Orenstein & Koppel locomotives (Works Nos.3312-3314) built in 1909, OAEG Nos. 52-54; Borsig locomotives (Works Nos. 7552-7555) built in 1910, OAEG Nos. 55-58; Hanomag locomotives (Works Nos. 5845-5948) built in 1910, OAEG Nos. 59-64; Maffei locomotives (Works Nos. 3628-3631) built in 1910,OAEG Nos. 63-66. [1: p27]

OAEG 2-8-0 Locomotives Nos 101-120

Numbered 101-120 these locomotives were built in three batches, 101-110 (6080-89) in 1911, 111-115 (6597-6601) in 1912 and 116-120 (6662-66) in 1913. The class was intended to include a total of 22 locomotives, but only 20 were built. The locomotives were primarily intended to support the construction and operation of the Central Line (Mittellandbahn or Tanganjikabahn) running from Dar es Salaam to Kigoma. Following World War I and the transition of the region to British administration, the engines entered service with the Tanganyika Railway Company, remaining in use into the late 1920s and 1930s. One of the Class is shown below with its Borsig tender.

An Hanomag 2-8-0 Locomotive with Borsig tender, (c) Public Domain. [21]

These were the largest and most powerful OAEG locomotives. They were put into service only after the eastern sections of the Mittellandbahn had been relaid with 55lb rail which would accommodate a ten ton axle load. Ramaer says that these locomotives were 46.2 tonnes (45.5 tons) in weight: “On level lines, these engines handled 500-ton trains, and on 1 in 55 gradients 250 tons at 10 1 km/h. Three carried feedwater purifiers/pre-heaters on top of the boiler. In their day, for the narrow gauge, they were advanced locomotives, and in the early post-war years, enginemen commented favourably upon those that survived. Nevertheless, the fact that they were not in line with British engineering practices presumably was the reason that all were scrapped in the period between the wars. The first ones went in the early 1920s, but the last survived until 1937, where it was in use on the Mwanza line. Without doubt the bulk of the class disappeared much earlier than would have been the case if the line had continued under German management.” [1: p25]

One significant problem on the Mittellandbahn was the availability of water for the locomotives

Locomotives under British Management:

Under British administration the Tanganyika Railway started operation on 1st April 1919. It gained a series of different locomotives of German origin and some which the British forces had brought into Tanganyika during the first world war. Much of the German network had been destroyed by the retreating German forces. Ramaer says that around 4 miles was shaved off the journey between Dar-es-Salaam and Kigoma as the opportunity was taken to realign sections of the line to smooth out the worst curves.

Ramaer says that “Of the German locomotives, four classes were initially put into service on the Central Line, 14 of the Hanomag-built 2-8-0 tender locomotives of the former class 101-20 and now classified GG for German Goods, 22 2-8-0Ts, the German Einheits-vlok, now called class GT, for German Tank, 2 0-8-2 tanks and 6 0-4-0T pugs, dating back to the earliest years of the line, when the DKEBBG had used them for line building purposes. Later on, a total of seven 0-4-4-0T and 2-4-4-0T Mallets were also reconditioned.” [1: p53-54]

Only 5 German locos were salvageable on the Tanga Line: “three of the Orenstein & Koppel-built 2-8-0 tender locomotives of the German series 15-18 and two of the standard 2-8-0 tanks. Many of the Hanomag engines on the Central Line needed new cylinder castings, as the Germans had destroyed them in an attempt to prevent subsequent use of the engines. The new castings were made at the Parel works in Bombay of the former Great Indian Peninsula Railway and mostly fitted at Tabora, where the Germans had installed the main workshops for the Central Line. Thus 14 engines could be reconditioned, Nos 102-3, 105-6, 108, 111-17, 119-20.” [1: p54]

“The two 2-8-0 tender classes disappeared after a fairly short life in comparison to other, British-built locomotives on the system. The first engines went in the early 1920s, when money was made available to buy new engines from Britain. The remaining Hanomag locomotives were laid up in about 1932, after the arrival of the new class GA Garratts. One, however, was temporarily brought back into service in 1937, equipped with an electric headlamp, to work the engineering train on the lightly laid Mwanza line, which was very susceptible to washaways, and was always troublesome to operate from the locomotive point of view. All the Mallet tanks were derelict at Tabora works in 1930-31 and were subsequently sold as scrap to Japan.” [1: p54]

TR GT 2-8-0T Class Locomotives

It seems that, of the German fleet, only the 2-8-0T locos had a significant life under British control. Numbered 101 and 102 they were finally scrapped at Nairobi works in 1951.

TR NZ Class 4-8-0 Locomotives

In March 1916, while the four members of the class were on their way to India, they were commandeered to assist in the British invasion of German East Africa, where they entered service with the Tanganyika Railway (TR), still carrying their NGSR lettering and numbers 1095–1098. In the early 1930s, they were officially classified as the TR’s NZ class (the NZ being a reference to “Nizam”), and renumbered as 200–203. [4]

The class was later operated by the TR’s successor, the East African Railways (EAR), as its 22 class, numbers 2201–2204. In the late 1940s, two of them were transferred to the Southern Province Railway, [5] the isolated network developed to support the ultimately unsuccessful Tanganyika Groundnuts Scheme. Nos 2202 and 2204 were scrapped in 1952, and 2201 and 2203 in 1956. [4]

TR DL Class 4-8-0 Locomotives

The abbreviation ‘DL’ stands for ‘Development Loan’. The locomotives first carried running numbers 200-205 and later 300-305. They had piston valves and superheater rather than the slide valves and saturated steam of the Nizams.Ramaer says that, “They were derived from the lighter engines of the Nigerian Railways’ Emir Class. Like them, they had narrow fireboxes which were found to be less suitable for wood burning, so that the DLs were used mainly on the section between Dar-es-Salaam and Morogoro, where coal was available.” [1: p56]

The DLs were survivors. Ramaer records that they were still is use in 1972 as EAR Class 2301-2306, although it was expected that they would be set aside in 1973. [1: p56]

TR MK 2-8-2 Class Locomotives

To resolve the problem of the DLs’ narrow fireboxes, a new locomotive design was ordered with a 2-8-2 wheel arrangement. The MK Class had a larger boiler and wider firebox. ‘MK’ was short for ‘Mikado’ which was the standard name across the world for 2-8-2 locomotives.

Later known as the EAR 25 class, the eleven members of the class were built by Vulcan Foundry, in Newton-le-Willows, Lancashire, for the Tanganyika Railway (TR). They entered service on the TR in 1925–1927. [10]

The eleven members of the Class were:

This class was a great success and the Class were still in use at the time Ramaer wrote his book, although he notes that they were now on borrowed time. “One problem with the design of the MK was the fact that the leading pony truck provided insufficient guidance on the sharp curves on the Dar-es-Salaam-Morogoro and the Malagarasi-Kigoma sections, and the design of the Bissel truck [29] left something to be desired.” [1: p57] The solution was a redesign for the next class of locomotive – the RV.

TR RV Class 4-8-2 Locomotives

The RV Class were a redesign of the MK Class – the only significant changes were the extending of the frames by 2 ft 9 in., to accommodate the leading bogie of the 4-8-2 wheel arrangement. Ramaer says that, “As a result of this change it was found necessary to extend the smokebox to keep the cylinders at least roughly in line with the blastpipe and chimney.” [1: p57] The design creted problems – “the greater length of the smokebox created vacuum problems, resulting in insufficient boiler draught. In consequence the RVs were poor steamers and this manifested itself clearly in their early days when they worked the mail trains on the Central Line. They were particularly bad on the Dar-es-Salaam-Morogoro and Kigoma-Kazuramimba sections with ruling gradients of two percent and more, although the below-average quality of firewood on the western section also had something to do with these poor performances.” [1: p57-58] They were nor popular with the train-crews.

At the time of writing of Ramaer’s book (1972?), these locomotives were working out their lives on lighter duties from Morogoro shed and were unlikely to continue in use beyond 1973. [1: p58]

TR G Class 4-8-0 Locomotives (including 4 No. NW Class 4-8-0 Locos)

These locomotives were a redesign of the NZ Class. Ramear says: “The four Nizam 4-8-0s obtained in 1916 served as the prototype for the TR’s own G class, a very similar unsuperheated, slide-valve engine, thirteen of which were supplied by Stephenson and Nasmyth Wilson and put in service in 1928-31. They were again closely similar to the original BESA-designed 4-8-0s for India and thus provide, as the last 4-8-0s built for the TR, a direct link with the first engines of this wheel arrangement to see service in this part of the world. The first eight were supplied to the Tanga Line in 1928 and released F class engines 96 and 720, which had become very expensive to maintain. One of the new Gs, unassisted, could handle the mail trains, a marked improvement over the old and obsolete six-coupled engines. The G had an axle load of only 8-8½ tons, a necessity on the light track of the Tanga Line. The reason for their obsolete concept is not quite clear, however, if we remember that these engines were built at the same time as the KUR EA class Mikados. Their original running numbers 20-32 were later changed to 204-16, as the locomotives were considered to be direct descendants of the NZ class locomotives 200-3. After the amalgamation in 1948 the G class engines were renumbered 2205-17 and gradually taken out of service.” [1: p58]

The EAR grouped a number of locomotives into the 22 Class in the late 1940s or early 1950s. This manoeuvre grouped ex-Tanganyika engines alongside a slightly newer batch of 1930 Nasmyth Wilson locomotives (Works Numbers 1588–1591) which also operated as Class 22s. [6]

The Tanganyika Railways Class G included four locomotives from a group initially known as NW Class 4-8-0s but others as well. We have noted above that the NZ Class of locomotives became EAR2201-EAR2204 (not Class G) and that the NW Class (included in Class G) later became EAR2214-EAR2217, two of which are pictured above. Others in Class G were to become: EAR2205 – EAR2209 Stephenson built locomotives (1927) Works Nos. 3959 -3963; EAR2210 – EAR2213 Stephenson built locomotives (1929) Works Nos. 3990-3991 & 4011-4012. [6]

All of the Class 22 locomotives were scrapped between 1956 and 1970. [6]

Renumbering

This table shows the revised numbering in use by the TR in the 1930s and the later EAR numbering scheme.

“The TR changed all running numbers in the early 1930s to a much more logical and consistent system. … Each class started at a round figure in series blocks of hundreds.” [1: p59]

TR ST Class 2-6-2T Locomotives

In 1930, the TR received four 2-6-2T shunters (the same type as the KUR ED1 Class). These were designated as the ST Class. They initially had running numbers TR Nos. 11-14, later TR Nos. 103-106. The locomotives were supplied by Vulcan. Under EAR control the locomotives were numbered EAR Nos. 1101-1104. [1: p60]

Many of the EAR Class 11 locomotives were adapted to burn oil fuel rather than wood or coal and were still in use in 1972. [1: p60]

TR Sentinel GSL 50 Class Shunters

The TR GSL class locomotives were 0-4-0T geared steam locomotives designed for shunting and light duties. Built by Sentinel Waggon Works in Shrewsbury between 1929 and 1931, these locomotives were primarily used for shunting in yards and short-haul operations. A total of eight locomotives were built. They feature a side-tank design with geared drive, providing better traction on tight curves and low-speed manoeuvres, while the 0-4-0T Whyte notation reflects a rigid wheelbase for stability in confined spaces. [14]

Procurement of the GSL class occurred in the late 1920s amid broader post-war modernization initiatives across East African railways, with the Tanganyika Railway ordering eight units (which it numbered 50-57) to bolster yard operations as traffic volumes rose. Economic considerations favoured geared designs for their lower maintenance costs and suitability to tropical conditions, where conventional engines often suffered from corrosion and overheating. [14]

Ramaer tells us that, “Among their duties in the [1930s and 1940s] they were used as shed pilots, particularly for hauling out larger engines from the German-pattern roundhouse sheds to the turn-table, an arrangement frequently used at Central Line depots. After the war, they began showing signs of age and as newly built steam shunters were not readily available, they were replaced by diesels, the first on the TR. The last Sentinels, although outmoded, served at Tabora until the middle 1950s before being scrapped.” [1: p60]

TR GA 4-8-2+2-8-4 Garratt Class Locomotives

The TR GA class, later known as the EAR 53 class, was a class of 4-8-2+2-8-4 Garratt-type articulated steam locomotives. The three members of the class were built in 1930 by Beyer, Peacock & Co. in Manchester for the Tanganyika Railway (TR). They entered service in 1931, and, with one exception, were later operated by the TR’s successor, the East African Railways (EAR). The class list is shown below. [11]

The design of the GA class locomotives was based upon that of the Kenya-Uganda Railways (KUR) EC2 class, which was built at about the same time by the North British Locomotive Company for the (KUR). The main design difference was that the GAs had higher, narrower front tanks than the EC2s. With their reduced water capacity, the GAs also had a lower axle loading, which made them suitable for operation over the World War I-damaged bridges on the Central Line in Tanganyika. [11]

Upon entry into service in 1931, the GA class locomotives were allocated numbers 300–302. Each of them was also given a name: the first two carried the names Arusha and Iringa, respectively, after the locations of the TR’s big road depots, and no. 302 was named Bukoba. Later, the GAs were renumbered 700–702. [1: p61]

It was the TR’s general policy to allocate tender locomotives to standard duties, and use its Garratts only for the most demanding tasks. The GA class therefore normally worked between Dar-es-Salaam and Morogoro, the heaviest part of the Central Line. [12: p184]

The GA class’s operating costs were markedly lower than those of their predecessors. Even during the Great Depression, when traffic volumes greatly declined, they were of great operational benefit. Following the outbreak of World War II, they became indispensable. [1: p60]

Unfortunately one member of the class, TR No 702 Bukoba, was derailed by a washaway near Mikese during a night of bad weather in 1944. The crew was saved, but the locomotive was almost completely submerged and had to be scrapped. [1: p60]

In 1949, the TR and the KUR were merged to form the EAR, which took over the two survivors, classified them as its 53 class, and renumbered them 5301–5302. [1: p61]

The EAR also equipped the two survivors with a French-style ACFI feedwater heater, one of which had already been fitted to the last member of the KUR EC1 class, no 66. However, the feedwater heaters were later removed, partly because they achieved only limited improvement in thermal efficiency, and also as they had caused similar maintenance problems to those experienced by the KUR. [1: p61]

In the 1950s, the EAR 53 class locomotives were replaced on the Central Line by the new EAR 60 class locomotives, and therefore transferred to the northern part of the EAR system. Later, they returned to what had become Tanzania, to carry out transfer work in Dar-es-Salaam. They were withdrawn and scrapped there in the late 1960s. [1: p61][12: p184]

TR GB 4-8-2+2-8-4 Garratt Class Locomotives

The Tanganyika Railway (TR) GB class were 4-8-2+2-8-4 Beyer-Garratt steam locomotives were originally ordered by the British War Department for service in Brazil, although not built. Later the design was used for locomotives for India and Burma. Four were acquired by the TR in 1946 from Burma. They later became members of the East African Railways (EAR) 55 class. [13][1: p64]

The Garratt locomotives that eventually made up the full 55 Class list were in use on the KUR and the TR. The full list is shown below:

TR ML 2-8-2 Class Locomotives

The six members of the ML class (an improved MK design) were built in 1947 by W. G. Bagnall, in Stafford, England, and delivered to the TR. They were later operated by the TR’s successor, the East African Railways (EAR), as its 26 class. In 1952, six further members of the 26 class were delivered to the EAR. They had been built by Vulcan Foundry, of Newton-le-Willows and Robert Stephenson & Hawthorns of North East England. [7]

TR BB Class Locomotives

Four 4-6-0 tender locomotives were found at El Shatt, at the southern end of the Suez Canal opposite Suez. These engines were originally built in 1926 at Ajmer works in India for the Bombay, Baroda and Central India Railway (BB&CI Railway) and “during the war nine were taken to Egypt to serve on the metre gauge Qena-Port Safaga railway from the upper Nile to the Red Sea. The 4-6-0s were found lying idle at El Shatt in 1945 and four were initially taken over by the TR in 1947-8.” [1:p67]

Ramaetr tells us that, “They were not successful in Tanganyika, in fact they were considered poor engines; the round-top fireboxes gave trouble and non-standard parts had been used in their construction. Hence, the five remaining engines were not taken over, while the four that had come to the TR as class BB (for BB&CI), Nos 270-3 later EAR 2001-4, were used mainly for shunting and occasional banking duties. They led a somewhat shadowy existence and even a good photograph of them does not seem to exist, the only one known showing No 272 with its old TR number being cut up at Dar es Salaam about 1957-8.” [1: p67]

TR MR Class 2-8-2 Locomotives

These locomotives were American-built. Many of these engines were built by various American manufacturers, including: Alco; Baldwin; and Davenport. These locomotives were known as ‘MacArthurs’. Those which ended up working on the Tanganyika Railways were manufactured in 1944. [1: p70] and arrived from Malaya in 1949. There were eight locomotives bought in this way which became the MR Class, running numbers 800-807. They were built by three different manufacturers and as a result had minor differences: Alco Nos. 800-802; Baldwin Nos. 803-805; Davenport Nos. 806-807. [1: p70]

Ramaer tells us that, “At first there were problems, and modifications were needed to water tanks and reversing gear, which was undertaken at Nairobi works because of the limited capacity of the shops at Dar-es-Salaam. An additional difficulty was posed by the fact that the engines had not been designed to burn wood fuel. Grates were rather small and no rocking or dropping equipment was available. This circumstance gave rise to criticism because of the high ash residue of the wood fuel and only after the locomotives were converted to burn oil was the problem satisfactorily solved. After conversion the MacArthurs by then classified EAR 2701-8, did reasonably well.” [1; p69] The class was expanded in 1950 under EAR control when eight more were purchased from Malaya and one in parts from Nigeria. The last of these locomotives in service was based at Tabora and had been kept running by cannibalising other members of the class.

TR Sentinel Railcars

“In 1929, two Sentinel rail cars were put into service between Moshi and Arusha in the North of Tanganyika. Although they were appreciated by the travelling public, they failed to attract sufficient traffic to make them an economic proposition on this section of the line.” [9: p199]

These railcars were manufactured by the Sentinel Waggon Works in Shrewsbury, in partnership with Cammell Laird. They were innovative geared steam-powered cars which were intended to increase service frequency and passenger convenience.

References

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19. https://www.drehscheibe-online.de/foren/read.php?108,9540359, accessed on 20th July 2026.
20. https://eisenbahn.de/lok-magazin/schienen-im-schutzgebiet-wie-das-deutsche-kaiserreich-seine-kolonien-mit-eisenbahnen-erschloss_27156, accessed on 20th July 2026.
21. I cannot identify the source of this image, given the age of the locomotive and the likely date of the image it will be in the Public Domain.
22. https://www.facebook.com/GermanColonialEmpire/photos/njussi-station-of-the-usambara-railway-in-the-german-colony-of-east-africa-from-/1339164168244702, accessed on 20th July 2026.
23. https://en.wikipedia.org/wiki/List_of_Orenstein_%26_Koppel_steam_locomotives, accessed on 20th July 2026.
24. https://de.m.wikipedia.org/wiki/Liste_schmalspuriger_Lokomotiven_von_Henschel, accessed on 24th March 2024.
25. A.E. Durrant; The Mallet Locomotive; David & Charles, Newton Abbot, Devon, 1974.
26. The Gölsdorf axle system is used to achieve quiet running and low wear-and-tear when negotiating curves. The axle system comprises a combination of fixed axles and axles that can slide transversely, all within a single, rigid locomotive frame. The system was invented by a young Austrian locomotive builder, Karl Gölsdorf, around the end of the 19th century. The first locomotive to use this principle entered service in 1897. [27]
27. https://en.wikipedia.org/wiki/G%C3%B6lsdorf_axle, accessed on 21st July 2026.
28. https://www.ebay.co.uk/itm/402962028832, accessed on 21st July 2026.
29. The Bissell truck (or Bissel truck) is a swiveling bogie or pony truck assembly fitted on steam locomotives. Patented by American engineer Levi Bissell in 1857, its genius lies in placing the pivot pin behind the truck and just ahead of the front driving wheels, shortening the rigid wheelbase and allowing the wheels to smoothly navigate uneven curves. [30]
30. https://www.gutenberg.org/files/25454/25454-h/25454-h.htm, accessed on 22nd July 2026.
31. https://picryl.com/media/tr-st-12-works-photo-c12c48?zoom=true, accessed on 22nd July 2026.