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British Railway Steam Locomotive

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Note: To Obtain Consistency in the Steam System, Shed Codes used are those Registered at Nationalisation on 1st January 1948
2nd Grouping Number
1st Grouping Numbersr 517
2nd Pre Grouping Number
1st Pre Grouping Numberlsw 517
Works/Lot Number
Class CodeH16
DesignerUrie R
BuilderEastleigh Works (LSWR/SR/British Railways)
1948 Shed70B Feltham
Last Shed70B Feltham
Disposal detailsEastleigh Works (B.R.)
DisposalCut Up
Disposal Date30/06/1963
NotesMaunsell Superheater fitted May 1929

Class Information

The LSWR H16 class were five 4-6-2 tank locomotives designed by Robert Urie for the London and South Western Railway (LSWR) in 1921–1922.

In association with the project to construct a marshalling yard at Feltham, Urie produced two locomotive designs, the G16 “Black Tanks” to shunt the new yard, and the H16 “Green Tanks” to work transfer freights to the London area yards of the other railway companies. Urie built five heavy tank locomotives similar to the G16 'hump' shunters. The five new tank locomotives, the H16 class, shared many common components and design features with the G16, such as identical boiler, motion and bogies as well as similar cylinders. The driving wheels were larger than those on the G16s at 5'7" and an extra large bunker was carried by a radial truck and design to increase the carrying water capacity of the locomotive. They were even heavier than the G16, weighing in at 98½ tons. Other than the change to Maunsell pattern superheaters, the class had virtually no alteration throughout their lives.

When originally built they were numbered 516–520. On passing to the Southern Railway, they had their LSWR numbers prefixed with an ‘E’. The locomotives lost the prefix between 1931–32. The Southern Railway painted the H16 class in passenger green paint, rather than goods engine black.

They were primarily intended for goods traffic between Feltham and Brent (MR) and Willesden (LNWR). Although they were used on special passenger trains, such as during Ascot Race Week, they were not wholly suitable for such jobs with their limited water supply and rough riding when running bunker first. Unlike the plain black livery of the G16s, the H16s were given the standard Southern passenger livery of lined Olive Green. This changed to a plain black livery during WWII which was retained by most of them during BR days. All five engines were passed to British Railway who renumbered them 30516–30520. During the 1950s the H16s were regularly employed on Clapham Jc-Waterloo empty stock duties and in their final years found regular employment on the Fawley branch oil trains. Their days were numbered however, with the rapid onset of dieselisation and all were withdrawn at the end of 1962.

The first four locos 30516 and 30518-30520 were withdrawn in November 1962 from Feltham shed.
The last loco 30517 was withdrawn the following month in December 1962 also from Feltham shed. During 30517's last weeks in service, it was used twice on parts of rail tours in the South London area.
None are preserved.

Technical Details

Builder : LSWR Eastleigh Works
Build date : November 1921 – February 1922
Total produced : 5 - Total to BR 5.
Configuration : 4-6-2T
UIC classification : 2'C1'ht
Gauge : 4 ft 8½ in (1,435 mm)
Leading wheel diameter : 3 ft 7 in (1.092 m)
Driver wheel diameter : 5 ft 7 in (1.702 m)
Trailing wheel diameter : 3 ft 7 in (1.092 m)
Length : 46 ft 0 in (14.02 m)
Width : 9 ft 2 in (2.79 m)
Height : 13 ft 3¼ in (4.04 m)
Axle load : 19.80 long tons (20.12 t)
Locomotive weight : 96 tons 8 cwt (97.95 t)
Fuel type : Coal
Fuel capacity : 3.50 long tons (3.56 t)
Water capacity : 2,000 imp gallons (9,100 l; 2,400 US gal)
Boiler pressure : 180lb/sq in Su (1.24 MPa)
Firegrate area : 27 sq ft (2.5 m2)
Heating surface : Tubes and flues 1,267 sq ft (117.7 m2)
Heating surface : Firebox 139 sq ft (12.9 m2)
Superheater type : Eastleigh (later Maunsell)
Superheater area : 231 sq ft (21.5 m2)
Cylinders : Two (outside)
Cylinder size : 21 in × 28 in (533 mm × 711 mm)
Valve Gear : Walschaerts (piston valves)
Tractive effort : 28,200 lbf (125.4 kN)
Career : London and South Western Railway, Southern Railway, British Railways
Class : LSWR/SR: H16
Power class : LSWR/SR: A, BR 5F (later 6F)
Nicknames : Green Tanks
Retired : 1962
Disposition : All scrapped

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