The Strv M/21 light tank was a Swedish tank that was designed by Joseph Vollmer, a German engineer who moved to Sweden after World War I. Vollmer had previously designed the German LK I and LK II tanks, and the Strv M/21 resembled them very closely.
Strv is an abbreviation of the Swedish word Stridsvagn, which means “tank”.
A crew of four manned the Strv M/21. It had a 4-cylinder, 55 horsepower Daimler engine.
The M/21’s only weapon was a 0.256 inch (6.5mm) machine gun.
The command version of the M/21 had a two-way radio, unlike the command versions of the LK I and LK II, which only had radio receivers.
In 1929, the Strv M/29 was built. It had heavier armor and a more powerful engine – a 6-cylinder, 80 horsepower Scania-Vabis engine – than the M/21. However, the armament was not upgraded.
 |
Strv M/21 Light |
|---|---|
| Active: | 1920 |
| Crew: | 4 |
| Weight: | 9.7 tons (9,850kg) |
| Length: | 18ft 9in (5.71m) |
| Height: | 8ft 3in (2.51m) |
| Width: | 6ft 9in (3.2m) |
| Weapons: | Main – 0.256in (6.5mm) machinegun |
| Armor | Maximum – 0.55in (14mm) |
| Engine: | Daimler 4-cylinder gasoline, 55hp |
| Speed: | 9.9mph (16kph) |
| Range: | 93.2 miles (150 km) |