GER Classes S46, D56 and H88

Specifications
Specifications
Configuration:;
• Whyte	4-4-0
• UIC	2′B n2, 2′B h2
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Leading dia.	3 ft 9 in (1.14 m)
Driver dia.	7 ft (2.1 m)
Length	53 ft 4+3⁄4 in (16.275 m)
Loco weight	52.2–55.9 long tons (53.0–56.8 t)
Fuel type	Coal
Firebox:
• Grate area	21.3 sq ft (1.98 m2)
Boiler pressure	180 psi (1,200 kPa)
Cylinders	Two inside
Cylinder size	19 in × 26 in (480 mm × 660 mm)

Type and origin
Type and origin
Power type	Steam
Designer	James Holden and A. J. Hill
Builder	Stratford Works
Build date	1900-1923
Total produced	121

GER S46, D56 and H88
"Claud Hamilton"
LNER Class D14/D15/D16
GER S46, D56 and H88; "Claud Hamilton"; LNER Class D14/D15/D16
	GER No. 1900 shortly after its completion in 1900.
Power type
Type and origin
Power type	Steam
Designer	James Holden and A. J. Hill
Builder	Stratford Works
Build date	1900-1923
Total produced	121
Configuration:;
Specifications
Configuration:;
• Whyte	4-4-0
• UIC	2′B n2, 2′B h2
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Leading dia.	3 ft 9 in (1.14 m)
Driver dia.	7 ft (2.1 m)
Length	53 ft 4+3⁄4 in (16.275 m)
Loco weight	52.2–55.9 long tons (53.0–56.8 t)
Fuel type	Coal
Firebox:
• Grate area	21.3 sq ft (1.98 m2)
Boiler pressure	180 psi (1,200 kPa)
Cylinders	Two inside
Cylinder size	19 in × 26 in (480 mm × 660 mm)
Tractive effort
Performance figures
Tractive effort	17,095 lbf (76,040 N)
Operators
Career
Operators	Great Eastern Railway; → London and North Eastern Railway; → British Railways;
Power class	BR: 2P (3P for D16/3 from 1953)
Axle load class	LNER/BR: RA 5
Withdrawn	D15: 1948–1952; D16/2: 1950-1952; D16/3: 1945-1953, 1955-1960
Disposition	All original locomotives scrapped.

The GER Classes S46, D56 and H88 (classified Classes D14, D15, and D16 by the London and North Eastern Railway) were three classes of similar 4-4-0 steam locomotive designed by James Holden (S46 and D56) and A. J. Hill (H88) for the Great Eastern Railway.

They were given the nickname Claud Hamilton after the pioneer engine of the class, named after Lord Claud Hamilton (1843–1925) the chairman of the Great Eastern Railway. The D56 class of 1903-4 evolved the design to include a square-topped Belpaire firebox. The H88 class of 1923 featured a larger superheated boiler, leading them to be known as Super Clauds. Many earlier members of the class were rebuilt during their working life.

During the Edwardian era, they were the flagship express locomotive on the Great Eastern Main Line, and although displaced on the heaviest express trains by the larger S69 class from 1911 (itself a 4-6-0 development of the Claud design), members of the class were used on passenger and goods services throughout the Eastern Region until 1960. No locomotives of the three classes survived to preservation.