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Two Strv 111/122Cs on exercise in Jundland as part of Exercise Scorpion (2005)
|Type||Main battle tank|
|Place of origin|| |
Error creating thumbnail: File missingEstovnia
|In service||1959 - Present|
|Designed||1951 - 1958|
|Produced||1958 - 1977|
|Number built||900 + (not including exports)|
|Length|| 7.8 m (hull)|
10.3 m (including gun)
|Passengers||3 (commander, gunner, driver)|
|Armor|| Glass-reinforced plastic sandwiched between layers of steel|
Third generation composite armor (Steel composite blend), modular armor packages, optional (N)ERA
| Haggslund 115mm m/52 smoothbore tank gun|
Haggslund 120mm m/81
|2 x 6.5x55mm Ksp m/34D|
|Engine|| Volvo E-48 V-12 diesel|
Volvo E-75 V-12 turbocharged multi-fuel diesel engine (D model and later)
|Transmission||Automatic (4 forward, 2 reverse)|
|Ground clearance||0.4 m|
|Fuel capacity||850 L|
|Speed|| On-road: 55 km/h|
Off-road: 32 km/h
The Strv 111 (Estovnian: Stridsvagn 111) is a second-genertion main battle tank design and fielded by the Estovnian Army. The tank is the successor to the Strv. 71/81 series, which when compared the Strv 111 is well-armored, well-armed, and highly mobile. The Strv 111 is the first Estovnian tank to feature composite armor for protection. Despite this advance, the vehicle lacked an autoloader until the 1960s with the introduction of the Strv 111/121A. The Strv 111 was designed as a replacement for all light, medium, and heavy tanks within service at the time, under the newly developed "main battle tank" concept. Under this concept, the main battle tank (MBT) was envisioned to be a "jack of all trades," capable of fulfilling all the roles expected of the light, medium, and heavy tanks.
Since the tank's introduction in 1959, several upgrades have taken place including the baseline Strv 111 introduced in 1959, the Strv 111B introduced in 1964, Strv 111/121A introduced in 1969, the Strv 111/121B introduced in 1984, and the current Strv 111/121C introduced in 1999. As of 2011, the Estovnian Army maintains roughly 400 Strv 111/121 series tanks.