British Rail Class D3/1

British Rail Class D3/1
Type and origin Power type Diesel-hydraulic Builder North British Locomotive Company Serial number 27751–27761, 27995–27997 Build date 1958–1959 Total produced 14
Specifications Configuration: ​  • Whyte 0-4-0 DH  • UIC B Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge Wheel diameter 3 ft 9 in (1.143 m) Loco weight 36.00 long tons (36.58 t) Prime mover NBL/MAN W6V17.5/22AS (supercharged) Transmission Hydraulic, Voith MU working Not fitted Train heating None
Performance figures Top speed 20 mph (32 km/h) Power output Engine: 330 bhp (246 kW) Tractive effort 24,100 lbf (107.2 kN)
Career Railroad(s) British Railways Class D3/1; later 3/4; no TOPS class Number D2900–D2913 Retired February 1967 Disposition All scrapped

British Rail Class D3/1 was a locomotive commissioned by British Rail in England. It was a diesel powered locomotive in the pre-TOPS period built by the North British Locomotive Company. The NBL/MAN engines were built by the North British Locomotive Company in Scotland under licence from the German company MAN.