SECR P class

Specifications
Specifications
Configuration:;
• Whyte	0-6-0T
• UIC	C n2t
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	3 ft 9+1⁄8 in (1.146 m)
Wheelbase	11 ft 0 in (3.35 m)
Length	23 ft 0 in (7.01 m)
Axle load	10 long tons 0 cwt (22,400 lb or 10.2 t)
Loco weight	28 long tons 10 cwt (63,800 lb or 29 t)
Fuel type	Coal
Fuel capacity	0 long tons 18 cwt (2,000 lb or 0.9 t) (2,016 lb or 914 kg)
Water cap.	550 imp gal (2,500 L; 660 US gal)
Firebox:
• Grate area	9 sq ft (0.84 m2)
Boiler pressure	160 lbf/in2 (1.10 MPa)
Heating surface:
• Firebox	51+3⁄4 sq ft (4.81 m2)
• Tubes	387+1⁄4 sq ft (35.98 m2)
• Total surface	439 sq ft (40.78 m2)
Superheater	None
Cylinders	Two, inside
Cylinder size	12 in × 18 in (305 mm × 457 mm)
Valve gear	Stephenson

Type and origin
Type and origin
Power type	Steam
Builder	SECR Ashford Works
Build date	1909 (2), 1910 (6)
Total produced	8

SECR P class
SECR P class
	SECR P Class No. 1555 at Brighton Locomotive Depot
Power type
Type and origin
Power type	Steam
Builder	SECR Ashford Works
Build date	1909 (2), 1910 (6)
Total produced	8
Configuration:;
Specifications
Configuration:;
• Whyte	0-6-0T
• UIC	C n2t
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	3 ft 9+1⁄8 in (1.146 m)
Wheelbase	11 ft 0 in (3.35 m)
Length	23 ft 0 in (7.01 m)
Axle load	10 long tons 0 cwt (22,400 lb or 10.2 t)
Loco weight	28 long tons 10 cwt (63,800 lb or 29 t)
Fuel type	Coal
Fuel capacity	0 long tons 18 cwt (2,000 lb or 0.9 t) (2,016 lb or 914 kg)
Water cap.	550 imp gal (2,500 L; 660 US gal)
Firebox:
• Grate area	9 sq ft (0.84 m2)
Boiler pressure	160 lbf/in2 (1.10 MPa)
Heating surface:
• Firebox	51+3⁄4 sq ft (4.81 m2)
• Tubes	387+1⁄4 sq ft (35.98 m2)
• Total surface	439 sq ft (40.78 m2)
Superheater	None
Cylinders	Two, inside
Cylinder size	12 in × 18 in (305 mm × 457 mm)
Valve gear	Stephenson
Tractive effort
Performance figures
Tractive effort	7,810 lbf (34.7 kN)
Operators
Career
Operators	South Eastern and Chatham Railway; → Southern Railway; → British Railways;
Class	SECR / SR: P
Power class	BR: 0F
Locale	Southern Region
Withdrawn	1955–1961
Disposition	Four preserved, four scrapped

The South Eastern and Chatham Railway (SECR) P class is a class of 0-6-0 T steam locomotive designed by Harry Wainwright.

They were inspired by, and loosely based on, the more successful LB&SCR A1 class "Terriers" and eight were built in 1909 and 1910. They were originally intended for lightweight passenger trains, to replace underpowered steam railmotors. Certain cost-saving design compromises had been made, compared to the Terrier design, and the P class were found to be underpowered, having only 73% of the Terrier's tractive effort. The P class were later re-allocated to shunting and station pilot duties.

All eight locomotives passed into Southern Railway ownership at The Grouping in 1923, and into British Railways ownership at Nationalisation in 1948. Withdrawals took place between 1955 and 1961, but four examples have been preserved.