The Merkava (Hebrew: מֶרְכָּבָה, [mɛʁkaˈva] , "chariot") is a series of main battle tanks used by the Israel Defense Forces (IDF) which are the backbone of the IDF's Armored Corps. Current iterations of this tank are considered broadly equivalent to the capabilities of the M1 Abrams, Leopard 2 and the Challenger 2. The current Merkava uses the same MTU EuroPowerPack powerplant as a number of other tanks. Development began in 1970, and its first generation, the Merkava Mark 1, entered official service in 1979. Four main variants have been deployed. As of 2023, Merkava Mark 4 Barak is the latest version. The Merkava was first used extensively in the 1982 Lebanon War. The name "Merkava" was derived from the IDF's initial development program name. The tank was developed in the Merkava and Armored Combat Vehicles Division of the Israeli Ministry of Defense, and most of its parts are manufactured in Israel. The Merkava was designed to provide maximum protection for its crew, and therefore its front armor was fortified and the engine placed in the front part of the tank, unlike most other tanks. Design criteria include rapid repair of battle damage, survivability, cost-effectiveness, and off-road performance. Following the model of contemporary self-propelled howitzers, the turret assembly is located closer to the rear than in most main battle tanks. With the engine in front, this layout is intended to provide additional protection against a frontal attack, so as to absorb some of the force of incoming shells and projectiles, especially for the personnel in the main hull, such as the driver. It also creates more space in the rear of the tank that allows increased storage capacity and a rear entrance to the main crew compartment allowing easy access under enemy fire. This allows the tank to be used as a platform for medical disembarkation (with no ammunition, the Merkava can hold up to 4 stretchers, but this is only an emergency measure), a forward command and control station, and an infantry fighting vehicle. The rear entrance's clamshell-style doors provide overhead protection when off- and on-loading cargo and personnel.
== Development == During the late 1960s, the Israeli Army collaborated on certain design aspects for the British Chieftain tank which had originally been introduced into British Army service in 1965, with a view to Israel purchasing and domestically producing the vehicle. Two Chieftain prototypes were delivered as part of a four-year trial. However, it was eventually decided not to sell the Chieftain to the Israelis, as the tanks were already being supplied to Arab countries, which prompted them to follow their own development programme.
Israel Tal, who was serving as a brigade commander after the Suez Crisis, restarted plans to produce an indigenous Israeli tank, utilizing information learned from the 1973 Yom Kippur War – when Israel had suffered heavy losses of mechanized armour. By 1974, initial designs were completed and prototypes were built. After a brief set of trials, work began to retool the Tel HaShomer ordnance depot for full-time development and construction. After the new facilities were completed, the Merkava was announced to the public in the International Defense Review periodical. The first official images of the tank were released to the American periodical Armed Forces Journal on May 4, 1977. The IDF officially adopted the tank in December 1979.
== Primary contractors == The lead organization for system integration of the Merkava's main components is Israel Military Industries (IMI). The Israeli Ordnance Corps are responsible for final Merkava assembly. More than 90% of the Merkava 4 tank's components are produced locally in Israel by Israeli defense industries. Contributors to the vehicle include:
IMI manufactures the 105 mm and 120 mm main guns and their ammunition; TGL SP Industries LTD develop and production of the road wheels. Urdan Industries assembles and constructs the hull, drive- and powertrains, and turret assemblies; Soltam manufactures the 60 mm internal mortar; Elta designs and manufactures the electronic sensors and infrared optics; Elbit delivers the ballistics computer, fire-control system (FCS) and electric turret and gun control system; Tadiran provides cabin air conditioning, crew cabin intercom and radio equipment; El-Op, Elisra and Astronautics implement the optics and laser warning systems; Rafael Advanced Defense Systems builds and installs the Rafael Overhead Weapon Station (R-OWS) and Trophy active protection system; L-3 Communication Combat Propulsion Systems produces licensed copies of Germany's MTU MT883 1500 hp diesel engine powerplant and RENK RK325 transmissions; Motorola supplies Tadiran communication encryption systems; DuPont supplies the Nomex, ballistic, and fire-retardant materials used by Hagor; Russia Military Industries helped to design the KMT-4 & -5 anti-mine rollers and the ABK-3 dozer blade, now built by Urdan; FN Herstal supplies 7.62 mm (MAG 58) and 12.7 mm (M2) coaxial and pintle-mounted machine guns; Caterpillar assisted with an Israeli-designed track system. Bental Industries, a TAT Technologies subsidiary, produced the brushless motors used in the Mark 4 turret and gun control system.
General characteristics
=== Firepower === The Merkava Mark 1 and 2 were armed with a 105 mm IMI M64 gun, a license-built variant of the M68. The Mark 3, Mark 3 Dor Dalet BAZ kassag, and the Mark 4 are armed with an IMI 120 mm smoothbore gun which can fire almost all versions of Western 120 mm smooth bore tank ammunition, as well as the LAHAT anti-tank guided missile. Each model of the Merkava has two roof-mounted 7.62 mm machine guns for use by the commander and loader and another mounted co-axially with the main gun. A 60 mm mortar is also fitted for firing smoke rounds or suppressing dug-in infantry anti-tank teams. All Merkava tanks are fitted with a remote-controlled M2 Browning .50 caliber heavy machine gun, aligned with the main gun and controlled from within the turret.
=== Mobility === The tank's 1,119 kW turbocharged diesel engine was designed by MTU and is manufactured under license by L-3 Communication Combat Propulsion Systems (formerly General Dynamics).
Variants
Merkava Mark I
The Mark 1, operational since 1979, is the original design created as a result of Israel Tal's decision, and was fabricated and designed for mass production. The Mark 1 weighed 63 tonnes and had a 908 horsepower (677 kW) diesel engine, with a power-to-weight ratio of 14 hp/Tonne. It was armed with the 105 millimeter M64 L71A main gun (a licensed copy of the American M68), two 7.62 mm machine guns for anti-infantry defense, and a 60 mm mortar mounted externally, with the mortar operator not completely protected by the tank's hull. The general design borrows the tracks and road wheels from the British Centurion tank, which had seen extensive use during the Yom Kippur war. The Merkava was first used in combat during the 1982 Lebanon War, where Israel deployed 180 units. Although they were a success, the M113 APCs that accompanied them were found to have several defects and were withdrawn. Merkavas were converted into makeshift APCs or armored ambulances by taking out the palleted ammunition racks in storage. Ten soldiers or walking wounded could enter and exit through the rear door. After the war, many adjustments and additions were noted and designed, including the need for the 60 mm mortar to be installed within the hull and engineered for remote firing—a valuable feature that the Israelis had initially encountered on their Centurion Mk3s with their 2" Mk.III mortar. A shot trap was found beneath the rear of the turret bustle, where a well-placed shot could jam the turret completely. The installation of chain netting to disperse and destroy rocket propelled grenades and anti-tank rockets before impacting the primary armor increased survivability.
Merkava Mark II
The Mark II was first introduced into general service in April 1983. It incorporated numerous small adjustments as a result of the previous year's incursion into Lebanon. The Mark II used the same 105 mm main gun and 7.62 mm machine guns as the Mark I, but the 60 mm mortar was redesigned during construction to be located within the hull and configured for remote firing to remove the need to expose the operator to enemy small-arms fire. An Israeli-designed automatic transmission and increased fuel storage for increased range was installed on all further Mark IIs. Anti-rocket netting was fitted for increased survivability against infantry equipped with anti-tank rockets. Many minor improvements were made to the fire-control system. Updated meteorological sensors, crosswind analyzers, and thermographic optics and image intensifiers gave greater visibility and battlefield awareness. Newer versions of the original Mark II were designated:
Mark IIB, with thermal optics and unspecified updates to the fire control system. Mark IIC, with more armor on the top of the turret to improve protection against attack from the air. Mark IID, with modular composite armor on the chassis and turret, allowing rapid replacement of damaged armor. In 2015 the IDF had begun a plan to take the old models out of storage and repurpose them as heavy armored personnel carriers. Cannons, turrets, and spaces used to store tank shells inside the hull were removed to create a personnel carrier that outperforms the lighter M113 APC. Converting hundreds of Mark II chassis provides a low-cost way to upgrade support units' abilities to perform medical, logistical, and rescue missions. By late 2016, the last conscripted brigade to operate Merkava 2 was scheduled to transition to Merkava III and Merkava IV tanks for battlefield missions, relegating the vehicles to reserve forces for border patrols during conflicts and conversion to personnel carriers.
Merkava Mark 3
The Merkava Mark 3 was introduced in December 1989 and was in production until 2003. As of 2016, the Merkava III was the most numerous tank in frontline IDF service. Compared to the Merkava II, it has upgrades to the drivetrain, powertrain, armament, and electronic systems. The most prominent addition was the incorporation of the locally developed IMI 120 mm gun. This gun and a larger 1,200 horsepower (890 kW) diesel engine raised the total weight of the tank to 65 tonnes (143000 lb), but the larger engine raised the maximum cruising speed to 60 km/h (37 mph). The turret was re-engineered for movement independent of the tank chassis, allowing it to track a target regardless of the tank's movement. Many other changes were made, including:
External two-way telephone for secure communications between the tank crew and dismounted infantry, Upgraded ammunition storage containers to minimize ammunition cook-off Addition of laser designators Incorporation of the Kasag modular armor system, designed for rapid replacement and repair in the battlefield and for quick upgrading as new designs and sophisticated materials become available
==== BAZ System ==== The 1995 Mark 3 BAZ (Hebrew acronym for ברק זוהר, Barak Zoher, signifying Shining Lightning) had several updates and added systems including:
NBC protection systems Locally developed central air-conditioning system Added improvements in ballistic protection The Mark 3D has removable modular composite armor on the chassis and turret
==== Dor-Dalet ==== The last generation of the Mark 3 class was the Mark 3D Dor-Dalet (Hebrew: Fourth Generation), which included several components as prototypes to be introduced in the Mark 4.
Upgraded and strengthened tracks (built by Caterpillar, designed in Israel), Installation of the Rafael Overhead Weapon Station. Independent, fully stabilised, panoramic commander's sights allowing "hunter-killer" ability. Advanced thermal imagers for both gunner and commander.
Merkava Mark 4
The development of Merkava Mark 4 was begun in 1999, and production in 2004. The upgrade's development was announced in an October 1999 edition of the military publication Bamachaneh ("At the Camp"). However, the Merkava Mark 3 remained in production until 2003. The first Merkava IVs were in production in limited numbers by the end of 2004. Removable modular armor, from the Merkava Mark 3D, is used on all sides, including the top and a V-shaped belly armor pack for the underside. This modular system is designed to allow damaged tanks to be rapidly repaired and returned to the field. Because rear armor is thinner, chains with iron balls are attached to detonate projectiles before they hit the main armored hull.
It is the first contemporary tank without a loader's hatch in the turret roof, because any aperture in the turret roof increases risk of penetration by ATGMs. Tank rounds are stored in individual fire-proof canisters, which reduce the chance of cook-offs in a fire inside the tank. The turret is electrically, rather than hydraulically, powered (hydraulic turrets use flammable liquid that ignites if the turret is penetrated) and "dry": no active rounds are stored in it. Merkava tanks since the IIc, including the Mark IV, have enhanced armor on top of the turret, providing more protection to the crew against drone strikes. Some features, such as hull shaping, exterior non-reflective paints (radar cross-section reduction), and shielding for engine heat plumes mixing with outside air (reduced infrared signature) to confuse enemy thermal imagers, were carried over from the IAI Lavi program of the Israeli Air Force to make the tank harder to spot and target by heat sensors and radar. The Mark 4 includes the larger 120 mm main gun of the previous versions, but can fire a wider variety of ammunition, including high-explosive anti-tank (HEAT), and sabot rounds like the armor-piercing fin-stabilized discarding sabot (APFSDS) kinetic energy penetrator, using an electrical semi-automatic revolving magazine for 10 rounds. It also includes a much larger 12.7 mm machine gun for anti-vehicle operations (most commonly used against technicals). The Mark IV has the Israeli-designed TSAWS (tracks, springs, and wheels system) caterpillar track system, called "Mazkom" (Hebrew: מערכת זחלים קפיצים ומרכובים, מזקו"ם) by troops. This system is designed to reduce track-shedding under the harsh basalt rock conditions of Lebanon and the Golan Heights.
The model has a new fire-control system, the El-Op Knight Mark 4. An Amcoram LWS-2 laser warning receiver notifies the crew of threats like laser-guided anti-tank missiles and the fire-control system can launch smoke grenades to obscure the tank from the laser beam. Electromagnetic warning against radar illumination is also installed. The tank carries the Israeli Elbit Systems BMS (Battle Management System; Hebrew: צי"ד), a centralised system that takes data from tracked units and UAVs in theater, displays it on color screens, and distributes it in encrypted form to all other units in a given theater equipped with BMS. The Merkava IV has been designed for fast repair and replacement of damaged armour, with modular armour that can be easily removed and replaced. It is designed to be cost-effective in production and maintenance. The tank has a high-performance air conditioning system, and can be fitted with a toilet for long-duration missions.
==== Mark 4 Meil Ru'ach (Mk 4M) Windbreaker ==== The Merkava Mark 4M (Mk 4M) Windbreaker is a Merkava Mark 4 equipped with the Trophy active protection system (APS), designated "Meil Ruach" (Hebrew: מעיל רוח; "Windbreaker" or "Wind Coat"). Mass production of Mark 4M tanks began in 2009, and the first whole brigade of Mark 4Ms was declared operational in 2011. The Trophy APS successfully intercepted rocket-propelled grenades and anti-tank missiles, including 9M133 Kornets, fired by Hamas before and during Operation Protective Edge in 2014.
==== Mark 4 Meil Ru'ach 400 (Mk. 4M 400) Windbreaker ==== A midlife upgrade for the Mk. 4M that is somewhat of a bridge between the Mk. 4M and the Mk. 4 Barak.
Merkava 4 Barak
The Merkava Mark 4 Barak (Lightning) entered service in 2023. The tank has an upgraded Trophy APS, 360-degree day/night camera coverage for boosted situational awareness, a fighter jet–style helmet-mounted display for the tank commander, and new sensors enabling it to independently acquire targets and strike them rapidly, as well as having electronic warfare abilities and advanced processing systems, and a direct energy system capable of intercepting drones and cruise missiles.
==== Iron Vision helmet-mounted display system ==== A main feature of the Barak, unveiled in July 2018, is the integration of the Iron Vision helmet-mounted augmented reality system, using high-resolution cameras arrayed around the tank to provide a 360° virtual reality view of a tank's surroundings to crew members' helmet displays while protected inside. Israeli company Elbit developed the system for the F-35 fighter aircraft.
Specifications of models
== Combat history == The Merkava has participated in the following actions.
1982 Lebanon War
The Merkava was used widely during the 1982 Lebanon War. The tank outperformed contemporary Syrian tanks (mostly T-62s), and its front proved largely immune to the anti-tank weapons of the time (the AT-3 Sagger and RPG-7) that were used against it. It was judged to be a significant improvement over Israel's formerly most effective main battle tank, the Centurion. Israel lost dozens of tanks during the conflict, including several Merkavas.
=== Second Intifada === In February 2002, a Merkava III was destroyed by a roadside bomb near Netzarim in the Gaza Strip. The tank was lured into intervening in an attack on a settler convoy. The tank went over a heavy mine (estimated 100 kg TNT), which detonated and totally destroyed the tank. Four soldiers were killed in the blast. This was the first main battle tank to be destroyed during the Second Intifada. A second Merkava II or Merkava III, was destroyed a month later in the same area and a further three soldiers were killed. A third Merkava II or III tank was destroyed near the Kissufim Crossing, when one soldier was killed and two wounded.
2006 Lebanon War
During the 2006 Lebanon War, five Merkava tanks were destroyed. Most of the tanks engaged were Merkava IIIs and earlier versions; only a few of the tanks used during the war were Merkava Mark 4, since by 2006 they had entered service in limited numbers. Hezbollah fired over 1,000 anti-tank missiles during the conflict against both tanks and dismounted infantry. Some 45 percent of all tanks and armoured vehicles hit with anti-tank guided missiles (ATGMs) during the conflict suffered some form of armour penetration. In total, 15 tank crewmen were killed by these ATGM penetrations. The penetrations were caused by tandem warhead missiles. Hezbollah weaponry was believed to include Russian RPG-29 'Vampir', AT-5 'Konkurs', AT-13 'Metis-M', and laser-guided AT-14 'Kornet' HEAT missiles. The RPG-29 was able to defeat the advanced reactive armor on the Merkava 4. The IDF reported finding Kornet ATGMs on Hezbollah positions in the village of Ghandouriyeh. Several months after the cease-fire, reports have provided detailed photographic evidence that Kornet ATGMs were indeed both possessed and used by Hezbollah in this area. Another Merkava IV tank crewman was killed when a tank ran over an improvised explosive device (IED). This tank had additional V-shaped underside armor, limiting casualties to just one of the seven personnel (four crewmen and three infantrymen) on board. In total, five Merkava tanks (two Merkava IIs, one Merkava III, and two Merkava IVs) were destroyed. Of these two Merkava Mark 4, one was damaged by an IED, and the other being destroyed by a Russian AT-14 'Kornet' missile. The Israeli military said that it was satisfied with the Merkava Mark IV's performance, and attributed problems to insufficient training before the war. In total, 50 Merkava tanks (predominantly Merkava IIs and IIIs) were hit, eight of which remained serviceable on the battlefield. 21 tanks suffered armour penetrations (15 from missiles, and 6 from IEDs and anti-tank mines). After the 2006 war, and as the IDF becomes increasingly involved in unconventional and guerrilla warfare, some analysts say the Merkava is too vulnerable to advanced anti-tank missiles, that in their man-portable types can be fielded by guerrilla warfare opponents. Other post-war analysts, including David Eshel, disagree, arguing that reports of losses to Merkavas were overstated and that "summing up the performance of Merkava tanks, especially the latest version Merkava Mark 4, most tank crews agree that, in spite of the losses sustained and some major flaws in tactical conduct, the tank proved its mettle in its first high-saturation combat." On a comparison done by the armor corps newsletter, it was shown that the average number of crewmen killed per tank penetrated by missile/rocket was reduced from 2 during the Yom Kippur War to 1.5 during the 1982 Lebanon War to 1 during the 2006 Lebanon War proving how, even in the face of the improvement in anti-tank weaponry, the Merkava series tanks provide increasingly better protection to its crew. The IDF wanted to increase orders of new Merkava Mark 4 tanks, and planned to add the Trophy active defense system to Merkava Mark 4 tanks, and to increase joint training between crews and Israeli anti-tank soldiers.
Operation Cast Lead
The Merkava Mark IV was used more extensively during the Gaza War, as it had been received by the IDF in increasing numbers since 2006, replacing more of the Merkava II and III versions of the tank that were in service. One brigade of Merkava IVs managed to bisect the Gaza strip in five hours without Israeli casualties. The commander of the brigade stated that battlefield tactics had been greatly revised since 2006. Tactics had also been modified to focus on asymmetric or guerrilla war threats, in addition to the conventional war scenarios that the Merkava had mainly been designed to combat. The IDF also deployed the Merkava II and III during the war.
