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The Sri Lanka Railways W2 is a class of diesel-hydraulic locomotives built by LEW Hennigsdorf for Sri Lanka Railways.
The rail vehicle factory in Hennigsdorf, Germany, was founded in 1910 by AEG. Locomotive production began in 1913, and in the 1930s absorbed the work of the August Borsig locomotive factory, being renamed the Borsig Lokomotiv Werke GmbH until 1944. After the Second World War the factory was nationalised in the German Democratic Republic and produced electric locomotives for home use and for export, mainly to Communist Bloc countries under the name Lokomotivbau-Elektrotechnische Werke (LEW).
The Sri Lanka Railway Department is Sri Lanka's railway owner and primary operator. As part of the Sri Lankan government, it is overseen by the Ministry of Transport. Founded in 1858 as the Ceylon Government Railway, it operates the nation's rail and links the capital, Colombo, with other population centres and tourist destinations.
15 Class W2 locomotives were developed by LEW Hennigsdorf including a prototype according to the order placed by Sri Lanka Railways. 14 locomotives were delivered to Sri Lanka in 1969. Prototype locomotive was kept with the builder. Later by 1972, prototype locomotive also was delivered to Sri Lanka. First locomotive fleet were allocated the numbers 703 to 716. Last locomotive delivered was given the number 729. [2]
The class were used for working passenger and freight services on the SLR Main Line. [2]
The Main Line is a major railway line in the rail network of Sri Lanka and considered by many to be one of the most scenic train journeys in all of Asia. The line begins at Colombo Fort and winds through the Sri Lankan hill country to reach Badulla.
By 80's with the introduction of new locomotives, W2s were taken out of passenger services and were used on freight services. These have been on regular services until 1985. By 90's Most of locomotives were condemned due to technical failures. Some were scrapped. [2]
In 2015, SLR rebuilt W2 715. The new version has Paxman Valenta V12 prime mover. This is painted in a new livery. This locomotive is now in regular operations. [3]
The British Rail Class 47 is a class of British railway diesel-electric locomotive that was developed in the 1960s by Brush Traction. A total of 512 Class 47s were built at Crewe Works and Brush's Falcon Works, Loughborough between 1962 and 1968, which made them the most numerous class of British mainline diesel locomotive.
An electro-diesel locomotive is powered either from an electricity supply or by using the onboard diesel engine. For the most part, these locomotives are built to serve regional, niche markets with a very specific purpose.
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Rail transport in Sri Lanka was conceived in the 1850s to develop and unify Sri Lanka. Service began in 1864, with the construction of the Main Line from Colombo to Ambepussa 54 kilometres (34 mi) to the east. During the first half of the 20th century a tram system operated in Colombo, carrying commuters within the city.
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Sri Lanka Railways Class M8 is a class of Sri Lankan diesel-electric locomotive that was developed by Diesel Locomotive Works at Varanasi, India, in 1996. This class of locomotives was fitted with 2,800 hp (2,100 kW) V16 power units. This is used on both passenger and freight trains on Sri Lanka Railways. Currently this is the most powerful locomotive in Sri Lanka.
Class S8 is a Diesel multiple unit (DMU) made by Hitachi and Hyundai, operated by Sri Lanka Railways. It was imported to Sri Lanka in 1991 and, according to the website Sri Lanka Railways Info Page, is "the best diesel multiple unit ever imported to Sri Lanka".
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Class M7 is a type of diesel-electric locomotive built for Sri Lanka Railways by Brush Traction, UK, and imported in 1981. This locomotive has the shortest length, least power and least weight compared to other diesel locomotives of Sri Lanka.
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Class G are a type of electric multiple unit trains used on the Berlin U-Bahn.