| T-100Y / SU-100Y | |
|---|---|
 The T-100Y prototype at Factory N°185. | |
| Type | Self-propelled gun |
| Place of origin | Soviet Union |
| Production history | |
| Designed | 1940[1] |
| Manufacturer | Soviet Union |
| Produced | 1940 |
| No. built | 1 prototype [1] |
| Specifications | |
| Mass | 64 tonnes[1] |
| Length | 10.9 m (35 ft 9 in) |
| Width | 3.4 m (11 ft 2 in) |
| Height | 3.29 m (10 ft 10 in) |
| Crew | 6 (Commander/Vertical Traverser, Gunner/Horizontal Traverser/Leverman-Firer, x2 Loaders, Driver, Radio Operator) |
| Armor | 60 millimetres (2.4 in) front |
Main armament | 130 mm Naval Gun B-13[1] |
| Engine | Mikulin GAM-34BT[1] 890 hp (660 kW)[1] |
| Suspension | Torsion bar |
| Maximum speed | 35 km/h (22 mph) on road |
The SU-100Y, initially designated T-100Y,[2] was a Soviet prototype self-propelled gun, developed from the chassis of the prototype T-100 tank. It was developed during the Winter War with Finland to include a 130 mm gun to destroy concrete defensive structures like bunkers and anti-tank obstacles along with the use as a tank destroyer. It did not see serial production.