The Special-Purpose All-Terrain Vehicle (S-ATV) is the latest member of off-road military vehicles being offered by Oshkosh Defence. It is designed to meet the mobility requirements of the US Special Operations Command (USSOCOM or SOCOM) and other armed forces across the world.
The vehicle was unveiled at the Modern Day Marine Exhibition held at Marine Corps Base Quantico (MCBQ) in September 2012. It was recently exhibited by Oshkosh at the Special Operations Forces Exhibition & Conference (SOFEX) 2018 held in Amman, Jordan, in May 2018.
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The S-ATV can be used for search-and-rescue (SAR), reconnaissance, target acquisition, internal defence, rapid response, and counter-insurgency operations.
S-ATV design and features
The special-purpose vehicle features a rugged frame offering roll-over protection. The conventional layout houses an engine at the front, crew cabin in the middle and cargo section at the rear. It integrates a 4×4 wheel drive configuration.
The modular design improves the operational flexibility of the vehicle as it can be easily customised into multiple configurations with varied protection levels based on mission requirements.
The operational efficiency of the vehicle is further increased by the plug and play command, control, communications, computers and intelligence (C4I) capability.
Two doors fitted to either side of the hull allow the entry and exit of troops. The forward hull features a three-piece windshield, while a large window on each door offers a complete view of surroundings. The cargo compartment at the rear can accommodate armament, fuel, water and ammunition.
The vehicle carries five personnel, including a gunner and four crew members. It can be optionally fitted with a kit to house up to seven occupants. The vehicle weighs 3,740kg and can carry up to 1,930kg of payload.
Armament and self-protection of S-ATV
A 360º circular roof-mounted turret system is fitted on the crew compartment. The turret can be armed with a 12.7mm or 7.62mm machine gun. A weapon station is also fitted near the side window.
The vehicle is provided with several integrated mounts to carry a wide range of armament and ballistic protection systems in order to protect the occupants from abrupt attacks.
Engine and mobility
The vehicle is powered by a 6.6l Duramax V8 diesel engine, which has a maximum power production capacity of 205kW. The engine is coupled to an automatic six-speed Allison 2100 SP transmission system. The drive-train features a two-speed, neutral locking differential.
The power-plant allows the vehicle to attain a maximum speed of 145km/h. The vehicle can travel up to a maximum range of 800km at a speed of 110km/h. The inbuilt engine cooling system enables the vehicle to operate at full throttle even in extreme temperatures up to 54°C.
The S-ATV is fitted with Oshkosh TAK-4i® intelligent independent suspension system. It ensures smooth mobility and superior ride quality on rough terrains. The wheels of the vehicle are fitted with 335/80 R20 runflat tyres for both on-road and off-road requirements.
The lightweight design and greater power-to-weight ratio enhance the vehicle’s payload carrying capacity. The vehicle is further equipped with a two-channel central tyre inflation system (CTIS) with four settings for different terrains. It can negotiate grades of 60% and side slopes of 40%.
The vehicle can be easily deployed to the mission locations using fixed and rotary-wing aircraft. It can be internally transported by CH-47 or externally by CH-47 and CH-53 cargo helicopters.
