The LSWR G16 class is a steam tank locomotive class of 4-8-0T

wheel arrangement In rail transport, a wheel arrangement or wheel configuration is a system of classifying the way in which wheels are distributed under a locomotive. Several notations exist to describe the wheel assemblies of a locomotive by type, position, and ...

. It was designed by

Robert Urie Robert Wallace Urie (22 October 1854 – 6 January 1937) was a Scottish locomotive engineer who was the last chief mechanical engineer of the London and South Western Railway. Career After serving an apprenticeship with and working for variou ...

and introduced in 1921 specifically for heavy shunting over humps at

Feltham marshalling yard Feltham marshalling yard, also known as Feltham hump yard, was a large railway marshalling yard designed for the concentration of freight traffic to and from South West London, and for transfer to other marshalling yards in London. It was built ...

, on the

London and South Western Railway The London and South Western Railway (LSWR, sometimes written L&SWR) was a railway company in England from 1838 to 1922. Originating as the London and Southampton Railway, its network extended to Dorchester and Weymouth, to Salisbury, Exete ...

(LSWR). They were based upon Urie's previous S15 class freight design, and apart from several periods of operating elsewhere on the LSWR and Southern railway network, they remained at Feltham for most of their operational careers.

Background

With the fast growth of the LSWR's London area goods traffic in the early years of the twentieth century, the company decided to construct a modern gravitational

marshalling yard A classification yard ( American and Canadian English ( Canadian National Railway use)), marshalling yard ( British, Hong Kong, Indian, Australian, and Canadian English ( Canadian Pacific Railway use)) or shunting yard (Central Europe) is a ra ...

Feltham Feltham () is a town in West London, England, from Charing Cross. Historically part of Middlesex, it became part of the London Borough of Hounslow in 1965. The parliamentary constituency of Feltham and Heston has been held by Labour Party M ...

. This location gave excellent access to the company main lines as well as direct links to the

Great Western Railway The Great Western Railway (GWR) was a British railway company that linked London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 mill ...

and

London and North Western Railway The London and North Western Railway (LNWR, L&NWR) was a British railway company between 1846 and 1922. In the late 19th century, the L&NWR was the largest joint stock company in the United Kingdom. In 1923, it became a constituent of the ...

, and to the

Midland Railway The Midland Railway (MR) was a railway company in the United Kingdom from 1844. The Midland was one of the largest railway companies in Britain in the early 20th century, and the largest employer in Derby, where it had its headquarters. It ama ...

, Great Northern Railway and

Great Eastern Railway The Great Eastern Railway (GER) was a pre-grouping British railway company, whose main line linked London Liverpool Street to Norwich and which had other lines through East Anglia. The company was grouped into the London and North Eastern R ...

via the

North London Line The North London line (NLL) is a railway line which passes through the inner suburbs of west, north-west, north, and east London, England between Richmond in the south-west and Stratford in the east, avoiding central London. Its route is a r ...

. Although completion of Feltham yard was delayed by the

First World War World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fig ...

, it was completed soon after. A new design of locomotive was required to haul heavy freight trains over the various flyovers that large marshalling yards such as Feltham had.

Design features

Urie had designed four very large shunting tanks based on his S15 goods 4-6-0s, except for utilising a somewhat smaller boiler, and eight-coupled wheels of diameter for extra traction. Urie's design resulted in massive locomotives that weighed in at 95 tons, and were the most powerful locomotives on the LSWR system. When passed over to Southern Railway ownership, the new

Chief Mechanical Engineer Chief mechanical engineer and locomotive superintendent are titles applied by British, Australian, and New Zealand railway companies to the person ultimately responsible to the board of the company for the building and maintaining of the locomotiv ...

Richard Maunsell Richard Edward Lloyd Maunsell (pronounced "Mansell") (26 May 1868 – 7 March 1944) held the post of chief mechanical engineer (CME) of the South Eastern and Chatham Railway from 1913 until the 1923 Grouping and then the post of CME of the ...

gave consideration to constructing more G16 locomotives, but instead decided to develop his

SR Z Class The SR Z class was an 0-8-0T 3-cylinder tank engine designed by Richard Maunsell and intended for heavy shunting on the Southern Railway, the first eight entering into service in 1929. It was a successful design and would have been built in ...

0-8-0T. Originally it had been intended to use them for transfer and trip workings so superheating was provided. Originally these were the Eastleigh design of superheater, but in later years these were replaced by the Maunsell pattern. This turned out to be a hindrance to the shunting activities and most of the transfer and trip workings were assigned to the similar H16 class of

4-6-2 Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of four leading wheels on two axles, six powered and coupled driving wheels on three axles and two trailing wheels on one axle. The loco ...

tanks. The G16 and H16 classes shared many components of the same design, such as boilers and fireboxes. The G16s, along with the T14s and H16s, were the widest standard gauge steam locomotives ever to run in Britain.

Construction history

Operational details

Feltham marshalling yard geograph-2981999-by-Ben-Brooksbank

Although they were tried out on other duties around the system, most of their life was spent allocated to the new shed at Feltham. The lack of maintenance for most locomotives during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...

meant that such massive and reliable machines as the G16s continued their hard work even in very run-down condition. Inevitably, the introduction of the ubiquitous 0-6-0 diesel electric shunters at Feltham in the 1950s made the G16s redundant. They were used occasionally on empty stock and van trains, from various depots such as Guildford, but these duties were limited in numbers and further electrification in the Southern Region meant that there was a surplus of locomotives in the late 1950s. One G16 was withdrawn in 1959, another in 1960 and the final two in December 1962. None has been preserved.

References

* * * {{SR Locomotives G16 4-8-0T locomotives Railway locomotives introduced in 1921 Scrapped locomotives Standard gauge steam locomotives of Great Britain