Steam Wheel Tank

Steam Wheel Tank
The Steam Wheel Tank
Place of origin	United States
Specifications
Mass	17 tons
Length	22 ft 3 in (6.78 m)
Width	10 ft 1 in (3.07 m)
Height	9 ft 10 in (3.00 m)
Crew	6
Armor	0.23–0.63 in (5.8–16.0 mm)
Main armament	2× 6-pounder (57 mm) cannons
Secondary armament	2× machine guns
Engine	2 steam

The Steam Wheel Tank was a U.S.-produced, prototype armoured fighting vehicle built by the Holt Manufacturing Company (now Caterpillar Inc.). Developed sometime between late 1916 and early 1917, it was the third tank to be designed in the U.S. The prototype was completed in February 1918 and was evaluated between March and May 1918 at Aberdeen Proving Ground. It performed poorly and was not developed further.