USATC S100 Class

USATC S100 class
Former Southern Railway USA class No. 65 preserved at the Kent and East Sussex Railway
Type and origin Power type Steam Designer Howard G. Hill Builder Davenport Locomotive Works (109), H. K. Porter, Inc (150), Vulcan Iron Works (123) Build date 1942–1944 Total produced 382
Specifications Configuration: ​  • Whyte 0-6-0T  • UIC C nt Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Driver dia. 4 ft 6 in (1,372 mm) Minimum curve 150 ft (45.72 m) radius Length 29 ft 6 in (8.99 m) Width 9 ft 0 in (2.74 m) Height 12 ft 1+5⁄8 in (3.70 m) Loco weight 100,650 lb (45,654 kilograms) Fuel type Coal or Oil Fuel capacity 2,500 lb (1,130 kilograms) coal, or 300 US gallons (1,100 L; 250 imp gal) oil Water cap. 1,200 US gallons (4,500 L; 1,000 imp gal) Firebox: ​  • Grate area First 50: 19.4 sq ft (1.80 m2), Remainder: 18.3 sq ft (1.70 m2) Boiler pressure 210 lbf/in2 (1.45 MPa) Heating surface: ​  • Firebox 86 sq ft (8.0 m2)  • Tubes 790 sq ft (73 m2)  • Total surface 876 sq ft (81.4 m2) Superheater None Cylinders Two, outside Cylinder size 16.5 in × 24 in (419 mm × 610 mm) Valve gear Outside Walschaerts Valve type 8-inch (203 mm) piston valves
Performance figures Tractive effort 21,630 lbf (96.2 kN) Factor of adh. 4.65
Career Operators USATC Disposition At least 25 known preserved, possibly more in derelict condition, remainder scrapped

The United States Army Transportation Corps (USATC) S100 Class is a 0-6-0 steam locomotive that was designed for switching (shunting) duties in Europe and North Africa during World War II. After the war, they were used on railways in Austria, China, Egypt, France, Great Britain, Greece, Iran, Iraq, Israel, Italy, the Netherlands, Palestine, the United States, and Yugoslavia.