Aircraft / Aviation Vehicles & Artillery Small Arms Warships & Submarines Military Ranks Military Pay Chart (2024) Special Forces
Land Systems / Battlefield

Engesa EE-11 Urutu (Pit Viper)

6x6 Wheeled Multirole Armored Fighting Vehicle (AFV) [ 1974 ]

The Engesa EE-11 Urutu Engesa was developed alongside the 6x6 wheeled EE-9 Cascavel by local Brazil industry.

Authored By: Staff Writer | Last Edited: 08/06/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

Engesa (now defunct) of Brazil produced a long-running series of viable armored car solutions for the Brazilian Army, as well as interested foreign parties, for decades. The EE-11 "Urutu" was developed specifically against a Brazilian Army request of the late-1960s which led to a prototype vehicle coming online in 1970 (this product was based on the EE-9 "Cascavel" armored car which was then also under development by the company). In 1974, serial production began and ended in 1987. Its commonality of parts with the EE-9 made it a popular economical purchase worldwide.

As built, the EE-11 showcased a weight of 11,000 kilograms (empty, non-combat load). It exhibited a length of 6.15 meters with a width of 2.65 meters and a height of 2.13 meters. Internally, there was a driver and commander as well as seating for eleven passengers. The engine was fitted to a compartment at the front-right of the hull with the driver at front-left. A turret was emplaced over the middle-front of the hull roof line with the rear of the vehicle hull left for passenger seating. The wheel arrangement was of a typical 6x6 with complete suspension for off-road travel ("Boomerang" double-axle rear drive). Ground clearance was excellent for the time. The axles were divided into a single forward unit and a pair of rear units. Armor protection reached 12mm thickness and a full amphibious capability was possible through some prior equipment preparation by the crew - propulsion being possible by the standard motion of the spinning wheels.

NBC (Nuclear, Biological, Chemical) protection, nightvision, vision blocks / firing ports and powered winch were all optional.

Power to the EE-11 line came from a Detroit Diesel 6V-53T or Mercedes-Benz series (manual or automatic transmission) six-cylinder water-cooled diesel-fueled engine developing 260 horsepower (original production models had 158hp engines) giving the vehicle a maximum road speed of 105 kmh with an operational range out to 850 kilometers.

The EE-11 was produced across seven major variants known simply as Mk I, Mk II, Mk III (212hp engine), Mk IV, Mk V, Mk VI and Mk VII (turbocharged diesel engine).

Variants of the base design have gone on to include a 2 x 20mm / 25mm Anti-Aircraft (AA) mobile platform, standard security / anti-riot vehicle, 81mm/120mm mortar carrier, battlefield ambulance, general cargo-hauler, Infantry Fighting Vehicle (IFV) (with 25mm-equipped turret and ATGM support), command vehicle with additional communications equipment and Fire Support Vehicle (FSV) (with 90mm-armed powered turret).

Operators of the EE-11 currently range from Angola and Bolivia to Venezeula and Zimbabwe. Chile has retired its complete stock. The vehicle has seen combat service in the Chadian-Libyan War (1978-1987), the Iran-Iraq War (1980-1988), the Persian Gulf War (1990-1991), the Libyan Civil War (2011) and the Iraqi Civil War (2014-Present). Such is the value of this proven local system that the Brazilian Army has reinstated the design through modernization of the engine and transmission system to bring about a decade or more of service still.

The Urutu name is Brazilian and from the South American pit viper "Bothrops alternatus". The name refers to the markings found on the snake.

The Brazilian Amry plans to succeed its aging stock of Urutu troop transport with the Italian Iveco VBTP-MR "Guarani" wheeled series.©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.


Engenheiros Especializados SA (Engesa) - Brazil
Angola; Bolivia; Brazil; Chile; Colombia; Ecuador; Gabon; Guyana; Iraq; Iran; Libya; Paraguay; Saudi Arabia; Suriname; Tunisia; United Arab Emirates; Uruguay; Venezuela; Zimbabwe
Operators National flag of Angola National flag of Bolivia National flag of Brazil National flag of Chile National flag of Colombia National flag of Ecuador National flag of Gabon National flag of Iraq National flag of Iran National flag of Libya National flag of the Kingdom of Saudi Arabia National flag of Tunisia National flag of the United Arab Emirates National flag of Uruguay National flag of Venezuela National flag of Zimbabwe
Service Year
National Origin

Traverse bodies of open water under own power with / without preparation.
Base model or variant can be used to search, track, and neutralize airborne elements at range.
Base model or variant can be used to track, engage, and defeat armored enemy elements at range.
Onboard systems provide solutions to accomplish a variety of battlefield engineering tasks.
Support allied ground forces through weapons, inherent capabilities, and / or onboard systems.
Design, of typically lightweight nature, providing onroad/offroad capabilities for the scouting or general security roles.
Engage armored vehicles of similar form and function.
Can conduct reconnaissance / scout missions to assess threat levels, enemy strength, et al - typically through lightweight design.
General utility-minded design to accomplish a variety of battlefield tasks, typically in a non-direct-combat fashion.
Special purpose design developed to accomplish an equally-special battlefield role or roles.

20.2 ft
(6.15 meters)
8.7 ft
(2.65 meters)
7.0 ft
(2.13 meters)
24,251 lb
(11,000 kg)
12.1 tons

1 x Detroit Diesel 6V-53T (or Mercedes-Benz) 6-cylinder liquid-cooled diesel-fueled engine developing 260 horsepower.
Drive System
65 mph
(105 kph)
Road Speed
528 miles
(850 km)
Road Range

Variable. Hull supports armament from pintle-mounted 7.62mm and 12.7mm machine guns to 25mm autocannon and 90mm tank-killing turrets.
Dependent upon armament fit.

EE-11 "Urutu" - Base Series Designation
81mm Mortar Carrier - Fire support vehicle
120mm Mortar Carrier - Fire support vehicle
Anti-Riot Vehicle - Smoke launchers; anti-plank fencing.
Armored Personnel Carrier (APC) - Base Model
Armored Recovery Vehicle (ARV) - Sans armament; powered crane and applicable mission equipment.
Battlefield Ambulance - Onboard medical equipment
Command Vehicle - Additional communications equipment fitted.
Fire Support Vehicle (FSV) - 90mm Cockerill Mk III turret.
Infantry Fighting Vehicle (IFV) - 25mm turreted main gun; ATGM launcher installed.
Self-Propelled Anti-Aircraft Artillery (SPAAA) - 2 x 20mm / 25mm autocannons in turret.

Military lapel ribbon for the American Civil War
Military lapel ribbon for pioneering aircraft
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of the Bulge
Military lapel ribbon for the Battle of Kursk
Military lapel ribbon for the Cold War
Military lapel ribbon for the Falklands War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon representing modern aircraft
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Ukranian-Russian War
Military lapel ribbon for the Vietnam War
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur War
Military lapel ribbon for experimental military vehicles


1 / 1
Image of the Engesa EE-11 Urutu (Pit Viper)
Image copyright www.MilitaryFactory.com; No Reproduction Permitted.

Disclaimer | Privacy Policy | Cookies

2024 Military Pay Chart Military Ranks DoD Dictionary Conversion Calculators Military Alphabet Code Military Map Symbols

The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com. No A.I. was used in the generation of this content; site is 100% curated by humans.

Part of a network of sites that includes GlobalFirepower, a data-driven property used in ranking the top military powers of the world, WDMMA.org (World Directory of Modern Military Aircraft), WDMMW.org (World Directory of Modern Military Warships), SR71blackbird.org, detailing the history of the world's most iconic spyplane, and MilitaryRibbons.info, cataloguing military medals and ribbons. Special Interest: RailRoad Junction, the locomotive encyclopedia.

©2023 www.MilitaryFactory.com • All Rights Reserved • Content ©2003-2023 (20yrs)