LNWR Prince of Wales Tank Class

LNWR 2665 Class
“5ft 6in Tank (Superheated)”

No. 2273

Type and origin
Power type	Steam
Designer	Charles Bowen Cooke
Builder	LNWR Crewe Works
Serial number	4950–69, 5080–96, 5347–56
Model	1910–1916
Total produced	47

Specifications
Configuration	4-6-2T
UIC class	2′C1 n2t
Gauge	4 ft 8 ¹⁄₂ in (1,435 mm)
Leading dia.	3 ft 3 in (0.991 m)
Driver dia.	5 ft 8 ¹⁄₂ in (1.740 m)
Trailing dia.	3 ft 3 in (0.991 m)
Loco weight	78 long tons (79 t)
Boiler pressure	175 lbf/in² (1.21 MPa)
Heating surface	Saturated: 1,475 sq ft (137.0 m²) Superheated: 1,330 sq ft (124 m²)
Cylinders	Two
Cylinder size	Saturated: 18 ¹⁄₂ in × 26 in (0 m × 1 m) Superheated: 20 in × 26 in (508 mm × 660 mm)
Valve gear	Joy
Valve type	Piston valves

Career
Class	5ft 6in Tank (Superheated)
Power class	LMS: 4P
Nicknames	Prince of Wales Tank
Withdrawn	1945–1941
Disposition	All scrapped

The London and North Western Railway (LNWR) Prince of Wales Tank Class was a pacific tank engine version of the Prince of Wales Class 4-6-0 steam locomotive.

Bowen-Cooke's predecessor George Whale had built 50 related Precursor Tank Class 4-4-2 engines. In terms of familial relationships, Prince of Wales Tank was both a superheated and extended version of the Precursor Tank, and a version of the Prince of Wales Class 4-6-0 steam locomotive with side tanks and a bunker which necessitated an extension to the frames and trailing pony truck. They were mostly used on suburban services out of Euston station.

The LNWR built 47 of the superheated tanks between 1910 and 1916 under Charles Bowen-Cooke.

All passed onto LMS ownership on the 1923 grouping. The LMS renumbered them 6950–6996 and gave them the power classification 4P. Withdrawals started in 1935, their replacements being Class 4 2-6-4T designs by Fowler and Stanier. All were gone by 1941.

None was preserved.

Table of locomotives
LNWR No.	Crewe Works No.	Build date	Superheated	LMS No.	Withdrawn
2665	4950	000000001910-12-01-0000Dec 1910	000000001913-05-01-0000May 1913	6950	000000001936-09-01-0000Sep 1936
2666	4951	000000001910-12-01-0000Dec 1910	000000001915-02-01-0000Feb 1915	6951	000000001936-01-01-0000Jan 1936
2667	4952	000000001911-01-01-0000Jan 1911	from new	6952	000000001937-07-01-0000Jul 1937
2668	4953	000000001911-01-01-0000Jan 1911	from new	6953	000000001936-10-01-0000Oct 1936
2669	4954	000000001911-02-01-0000Feb 1911	from new	6954	000000001936-09-01-0000Sep 1936
2670	4955	000000001911-02-01-0000Feb 1911	from new	6955	000000001936-09-01-0000Sep 1936
217	4956	000000001911-02-01-0000Feb 1911	from new	6956	000000001938-04-01-0000Apr 1938
1183	4957	000000001911-02-01-0000Feb 1911	from new	6957	000000001937-12-01-0000Dec 1937
1366	4958	000000001911-02-01-0000Feb 1911	from new	6958	000000001936-02-01-0000Feb 1936
1797	4959	000000001911-02-01-0000Feb 1911	from new	6959	000000001938-03-01-0000Mar 1938
632	4960	000000001911-03-01-0000Mar 1911	000000001913-05-01-0000May 1913	6977	000000001936-03-01-0000Mar 1936
1186	4961	000000001911-03-01-0000Mar 1911	000000001914-03-01-0000Mar 1914	6982	000000001937-03-01-0000Mar 1937
1416	4962	000000001911-03-01-0000Mar 1911	000000001916-08-01-0000Aug 1916	6986	000000001937-01-01-0000Jan 1937
1533	4963	000000001911-03-01-0000Mar 1911	000000001913-06-01-0000Jun 1913	6978	000000001937-03-01-0000Mar 1937
1638	4964	000000001911-03-01-0000Mar 1911	000000001915-04-01-0000Apr 1915	6985	000000001937-04-01-0000Apr 1937
1688	4965	000000001911-03-01-0000Mar 1911	000000001913-06-01-0000Jun 1913	6979	000000001941-04-01-0000Apr 1941
1692	4966	000000001911-04-01-0000Apr 1911	000000001915-01-01-0000Jan 1915	6984	000000001936-04-01-0000Apr 1936
1710	4967	000000001911-04-01-0000Apr 1911	000000001914-07-01-0000Jul 1914	6983	000000001937-02-01-0000Feb 1937
1728	4968	000000001911-04-01-0000Apr 1911	000000001913-07-01-0000Jul 1913	6980	000000001938-03-01-0000Mar 1938
1734	4969	000000001911-04-01-0000Apr 1911	000000001913-11-01-0000Nov 1913	6981	000000001936-04-01-0000Apr 1936
91	5080	000000001912-07-01-0000Jul 1912	from new	6960	000000001939-02-01-0000Feb 1939
375	5081	000000001912-07-01-0000Jul 1912	from new	6961	000000001938-02-01-0000Feb 1938
376	5082	000000001912-07-01-0000Jul 1912	from new	6962	000000001937-01-01-0000Jan 1937
716	5083	000000001912-07-01-0000Jul 1912	from new	6963	000000001936-03-01-0000Mar 1936
915	5084	000000001912-08-01-0000Aug 1912	from new	6964	000000001937-07-01-0000Jul 1937
932	5085	000000001912-08-01-0000Aug 1912	from new	6965	000000001937-12-01-0000Dec 1937
944	5086	000000001912-08-01-0000Aug 1912	from new	6966	000000001937-11-01-0000Nov 1937
962	5087	000000001912-08-01-0000Aug 1912	from new	6970	000000001936-04-01-0000Apr 1936
858	5088	000000001912-08-01-0000Aug 1912	from new	6969	000000001937-06-01-0000Jun 1937
2004	5089	000000001912-08-01-0000Aug 1912	from new	6971	000000001937-04-01-0000Apr 1937
327	5090	000000001912-09-01-0000Sep 1912	from new	6967	000000001936-02-01-0000Feb 1936
704	5091	000000001912-09-01-0000Sep 1912	from new	6968	000000001936-07-01-0000Jul 1936
841	5092	000000001912-09-01-0000Sep 1912	from new	6972	000000001937-04-01-0000Apr 1937
963	5093	000000001912-09-01-0000Sep 1912	from new	6973	000000001938-02-01-0000Feb 1938
1006	5094	000000001912-09-01-0000Sep 1912	from new	6974	000000001936-09-01-0000Sep 1936
1021	5095	000000001912-09-01-0000Sep 1912	from new	6975	000000001937-09-01-0000Sep 1937
1184	5096	000000001912-10-01-0000Oct 1912	from new	6976	000000001936-02-01-0000Feb 1936
96	5347	000000001916-09-01-0000Sep 1916	from new	6987	000000001936-12-01-0000Dec 1936
316	5348	000000001916-09-01-0000Sep 1916	from new	6988	000000001936-12-01-0000Dec 1936
809	5349	000000001916-09-01-0000Sep 1916	from new	6989	000000001937-08-01-0000Aug 1937
878	5350	000000001916-10-01-0000Oct 1916	from new	6990	000000001936-03-01-0000Mar 1936
2098	5351	000000001916-10-01-0000Oct 1916	from new	6991	000000001936-02-01-0000Feb 1936
2273	5352	000000001916-10-01-0000Oct 1916	from new	6992	000000001937-01-01-0000Jan 1937
2292	5353	000000001916-11-01-0000Nov 1916	from new	6993	000000001939-09-01-0000Sep 1939
2298	5354	000000001916-11-01-0000Nov 1916	from new	6994	000000001936-02-01-0000Feb 1936
2384	5355	000000001916-11-01-0000Nov 1916	from new	6995	000000001937-04-01-0000Apr 1937
2418	5356	000000001916-11-01-0000Nov 1916	from new	6996	000000001937-09-01-0000Sep 1937

References

Baxter, Bertram (1979). Baxter, David, ed. British Locomotive Catalogue 1825–1923, Volume 2B: London and North Western Railway and its constituent companies. Ashbourne, Derbyshire: Moorland Publishing Company. pp. 290–291. ISBN 0-903485-84-2.
Casserley, H. C. & Johnston, Stuart W. (1974) [1966]. Locomotives at the Grouping 3: London, Midland and Scottish Railway. Shepperton, Surrey: Ian Allan. p. 79. ISBN 0-7110-0554-0.

London and North Western Railway locomotives

John Ramsbottom (North Eastern Division 1846–1857)

Francis Trevithick (Northern Division 1846–1857)	SFB passenger 187 Velocipede 173 Cornwall 290 Rocket LFB passenger 7ft Single (Raven) 176 Courier SFB goods LFB goods SFB goods tank LFB goods tank

John Ramsbottom (Northern Division 1857–1862)	3020 Cornwall (renewed) 271 DX Problem / Lady of the Lake

Edward Bury (Southern Division 1846–1847)	Bury Bar Frame locomotive

James McConnell (Southern Division 1847–1862)	Bloomer McConnell Goods Wolverton Express Goods

John Ramsbottom (1862–1871)	4ft Shunter Samson Newton Special Tank

Francis William Webb (1871–1903)	Alfred the Great Coal Engine Coal Tank Experiment Dreadnought Teutonic Greater Britain John Hick Dock Tank Precursor Precedent Improved Precedent Jubilee Waterloo 4ft 6in Tank 5ft 6in Tank 18in Goods (Cauliflower) 18in Tank A B 1400 Class

George Whale (1903–1909)	Experiment 19in Express Goods Precursor Precursor Tank Renown C D E F G

Charles John Bowen Cooke (1909–1920)	1185 Claughton George V Queen Mary Prince of Wales Prince of Wales Tank C1 G1 MM

H. P. M. Beames (1920–1921)	380 G2 G2A

George Hughes (1922–1923)	No new locomotive classes

Locomotives of the London and North Western Railway LMS locomotives British Railways steam locomotives

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