Sturmpanzerwagen Oberschlesien
| Sturmpanzerwagen Oberschlesien | |
|---|---|
| Type | Assault Tank | 
| Place of origin | German Empire | 
| Service history | |
| In service | Never used | 
| Specifications | |
| Mass | ~19 t | 
| Length | 6.7 m (22 ft) | 
| Width | 2.34 m (7.7 ft) | 
| Height | 2.9 m (9.5 ft) | 
| Crew | 5 | 
| Armor | 14 mm (0.55 in) | 
Main armament  | 1 x 57 mm (2.2 in) or 37 mm (1.5 in) cannon | 
Secondary armament  | 2 x 8 mm MG 08 machineguns | 
| Engine | Argus As III 190 hp (140 kW)  | 
| Power/weight | 10 hp/t (7.4 kW/t) | 
Operational range  | 60 km (37 miles), ~100 km (62 miles) paved road | 
| Maximum speed | 16 km/h (9.9 mph) on roads 9 km/h (5.6 mph) off-road  | 
The Sturmpanzerwagen Oberschlesien ("Assault tank Upper Silesia" from German: der Sturm, the assault; German: der Panzerwagen the tank) was a German tank project of the First World War. It was a radical design for a fast-moving, lightly armoured assault tank.
The Oberschlesien included a track which was placed under the tank and only wrapped around half of it. The design sacrificed armour for the sake of speed and only required a 180 hp (130 kW) engine for the 19 ton body, giving it a projected ground speed of 16 km/h (9.9 mph).
The tank featured such advanced features as the main armament mounted on top of the tank in a centrally placed revolving turret, separate fighting and engine compartments, a rear-mounted engine and a low track run.