| Builder | Cockerill |
| Year built | 1920 |
| Works number | 2951 |
| Weight in working order | ~ 15 tonnes |
| Length over body | ~ 5.00 meters (16 feet 5 inches) |
| Maximum speed | 20 km/h (11 mph) |
| Power | 115 hp |
| Grate area | 1,0 m² (10,73 sq.ft.) |
| Driving wheel diameter | 700 mm (2 feet 3 inches) |
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This small but remarkable machine is a curiosity. It is a rare standard gauge loco fitted with a vertical boiler and steam brakes. Built by Seraing, in Belgium, by John Cockerill, who was well known for this type of construction. This company was the first to build steam locos in mainland Europe (1835). This machine is from the 4th batch (out of 5) in a series of 900 locos, and arrived at St-Sulpice on the 9th May 1984. This small but powerful loco was considered ideal for works premises where they could negotiate curves of 15 meters and steep inclines. The boiler has been overhauled by Grey, but the motion, which was in poor condition, must be completely refurbished. The absence of air brakes and a low maximum speed prevents this machine from hauling passenger trains, so the completion of this overhaul has been deferred to ensure more urgent tasks are completed.
http://www.voisin.ch/vvt/ : 26.07.2007