Skeleton tank
| Skeleton tank | |
|---|---|
Skeleton Tank preserved at Aberdeen Proving Ground | |
| Type | Experimental Tank |
| Place of origin | USA |
| Production history | |
| Manufacturer | Pioneer Tractor Company |
| Produced | 1918 |
| No. built | 1 |
| Specifications | |
| Mass | 18,000 lb (8,200 kg) |
| Length | 25 ft (7.6 m) |
| Width | 8 ft 5 in (2.57 m) |
| Height | 9 ft 6 in (2.90 m) |
| Crew | 2 |
| Armor | 0.5 in (12.7 mm) |
Main armament | 1 X .30 (7.62 mm) caliber machine gun |
| Engine | 2 X Beaver 4-cylinder 50 hp (37 kW) |
| Suspension | Rigid frame tracks |
| Maximum speed | 5 mph (8.0 km/h) |
The Skeleton tank also known as the Spider tank was an experimental prototype tank built in 1918 by the Pioneer Tractor Company, Winona, Minnesota for $15,000 ($ 313,600 in 2025). The prototype was ready for trials by October 1918. Designed with several innovative features, some of which were controversial at the time, the Skeleton Tank project did not proceed beyond the single prototype.