Yeramba

Last updated
Yeramba self-propelled 25 Pounder
Yeramba spg (AWM p04301 007).jpg
The prototype Yeramba in 1949
Type Self-propelled artillery
Place of originAustralia
Service history
In service1950–1957
Used byAustralia
Production history
Designed1949
Produced1950–1952
Specifications
Mass28.5 long tons (29.0 t)
Length18 feet 11 inches (5.77 m)
Width8 feet 11 inches (2.72 m)
Height8 feet (2.4 m)
Crew6 (Commander, Driver, and 4 gun crew)

Armour 1.5 inches (38 mm)
Main
armament
QF 25 pdr (87.6 mm) Mk II
Secondary
armament
Two 0.303 (7.7 mm) Bren light machine gun
EngineTwin GM 6-71 diesel
375 horsepower (280 kW)
Power/weight13 hp/ton
SuspensionVertical Volute Spring
Operational
range
125 miles (201 km)
Maximum speed 25 miles per hour (40 km/h)

The Yeramba was an Australian self-propelled howitzer built after the end of the Second World War in the late-1940s. They were produced by mounting the 25 pounder gun-howitzer on an American M3A5 Grant tank hull, and were converted by the Ordnance Factory in Bendigo from 1950 to 1952. [1] The Yeramba was withdrawn from service in 1957 after becoming obsolete and remains the only self-propelled artillery introduced into service by the Australian Army. [2] The name is from the yeramba, an Aboriginal instrument for throwing spears. [2]

Contents

History

Development

The 1947 defence program witnessed the formation of the Australian Regular Army and included in the plans for a permanent field force was a number of new armoured formations—the 2nd Armoured Brigade Group among them. Allocated to this independent brigade was 22nd Field Regiment, Royal Australian Artillery. One of the lessons of the war in Europe had been the need for artillery units in armoured brigades to have the same mobility and protection as the tanks they were supporting, and consequently a program was begun to acquire a self-propelled gun. [1]

However, as modern self-propelled artillery could not be purchased from overseas, it was decided to adapt a small number of M3 Grant tanks to the role. Although officially known as "Ordnance, Quick Firing, 25 pdr Mark 2/1, on Mounting Self propelled 25 pdr (AUST) Mark 1, on Carrier, Grant, Self Propelled 25 pdr (AUST) Mark 1", [3] the name Warragal [note 1] was proposed to replace this awkward nomenclature in general use. This was rejected, and in January 1951 the name 'SP 25 pounder Yeramba' was accepted as the official short name. [2]

Drawings for the Canadian Sexton self-propelled 25 pounder—also derived from the M3 chassis—were obtained and adapted, with the turret and much of the frontal armour of the Grant replaced by an open-topped fighting compartment. The driver's position and controls were moved down and to the right within the vehicle. [2] Indeed, a new welded, open-topped superstructure was added in place of the 37 mm (1.5 in) turret, forward hull, and sponson-mounted 75 mm (3 in) gun. A QF 25 pounder Mk 2/1 with a 20 in (510 mm) fixed length recoil system and a muzzle brake was mounted centrally in the superstructure, allowing the gun to traverse over a 40 degree arc. Elevation was limited to 40 degrees, and depression to 9.5 degrees. [3] The more resilient M4 Sherman suspension units replaced the M3 type bogies. Stowage was provided for 88 high explosive and/or smoke shells and 16 armour-piercing (AP) rounds. [3] The 25-pounder and a strengthened saddle were mounted on a bolster-and-beam assembly welded to the track sponsons, whilst the gun was equipped with the same sighting gear as the towed field gun, allowing for both direct and indirect laying. [2]

Trials

A Yeramba on display at the Royal Australian Armoured Corps Tank Museum Puckapunyal-Yeramba-1.jpg
A Yeramba on display at the Royal Australian Armoured Corps Tank Museum

In July 1949, approval was given to convert one Grant to the self-propelled configuration and the prototype subsequently underwent user and firing trials at Puckapunyal in December 1949. It was then returned to the factory for modifications and completion of the stowage arrangements. Following general acceptance by the Army, authorisation was given in February 1950 to convert another 13 Grants to Yerambas. The first of these conversions was completed in November 1950 and the last was delivered in August 1952. [2] One of the benefits of the conversion was standardisation, as the Grant tank was still used by the 2nd Armoured Brigade itself, whilst the 25 pounder field gun was also the standard field artillery equipment in service. It was also the cheapest available solution. [2]

Operational service

A group of officials inspecting the prototype Yeramba in 1949 Yeramba (AWM P04301-004).jpg
A group of officials inspecting the prototype Yeramba in 1949

A total of 14 vehicles underwent this conversion. Like many M3 medium tanks in Australia, the Yerambas were normally fitted with an additional cast armour plate of between 38 mm to 44 mm thickness bolted over the transmission housing and final drives on the nose of the vehicle. All of the Yerambas produced were issued to the 22nd Field Regiment, Royal Australian Artillery between 1950 and 1952 and based at Puckapunyal. [1] The regiment subsequently adopted the Royal Australian Armoured Corps black beret with the Royal Australian Artillery cap badge, and were issued with AFV crewman's rubberised canvas soled boots. [2] However, it was subsequently disbanded in 1957 and the Yerambas disposed of after being declared obsolete. They were never used operationally. [1] [note 2] Despite the gruelling labour associated with maintaining them, the Yeramba was considered a very good weapon by its crews. [2]

Operators

Side view of the prototype Yeramba Yeramba (AWM P0430106).jpg
Side view of the prototype Yeramba

Notes

Footnotes
  1. see wiktionary:Warragal for meanings
  2. Surviving Yerambas can be seen at the RAAC tank museum at Puckapunyal Victoria, and at the Melbourne Tank Museum in Narre Warren.
Citations
  1. 1 2 3 4 Horner 1995, p. 432.
  2. 1 2 3 4 5 6 7 8 9 Cecil 2009.
  3. 1 2 3 Royal Australian Armoured Corps Memorial and Tank Museum: Vehicle Information Pack No. 7, Self Propelled 25 pdr Gun Yeramba, (excerpts from the Yeramba manual)

Related Research Articles

<span class="mw-page-title-main">Tank destroyer</span> Type of armoured fighting vehicle designed to engage and destroy enemy tanks

A tank destroyer, tank hunter, tank killer, or self-propelled anti-tank gun is a type of armoured fighting vehicle, armed with a direct fire artillery gun or missile launcher, designed specifically to engage and destroy enemy tanks, often with limited operational capacities.

<span class="mw-page-title-main">Self-propelled artillery</span> Artillery mounted on a vehicle for mobility and protection

Self-propelled artillery is artillery equipped with its own propulsion system to move toward its firing position. Within the terminology are the self-propelled gun, self-propelled howitzer, self-propelled mortar, and rocket artillery. They are high mobility vehicles, usually based on continuous tracks carrying either a large field gun, howitzer, mortar, or some form of rocket/missile launcher. They are usually used for long-range indirect bombardment support on the battlefield.

<span class="mw-page-title-main">M3 Lee</span> American medium tank of World War II

The M3 Lee, officially Medium Tank, M3, was an American medium tank used during World War II. The turret was produced in two forms, one for US needs and one modified to British requirements to place the radio next to the commander. In British Commonwealth service, the tank was called by two names: tanks employing US pattern turrets were called "Lee," named after Confederate general Robert E. Lee, while those with British pattern turrets were known as "Grant," named after Union general Ulysses S. Grant.

<span class="mw-page-title-main">Crusader tank</span> British WWII cruiser tank

Crusader, in full "Tank, Cruiser Mk VI, Crusader", also known by its General Staff number A.15, was one of the primary British cruiser tanks during the early part of the Second World War. Over 5,000 tanks were manufactured and they made important contributions to the British victories during the North African campaign. The Crusader tank would not see active service beyond Africa but the chassis of the tank was modified to create anti-aircraft, fire support, observation, communication, bulldozer and recovery vehicle variants.

<span class="mw-page-title-main">Sexton (artillery)</span> Self-propelled artillery

The 25pdr SP, tracked, Sexton was a Canadian-designed self-propelled artillery vehicle of the Second World War. It was based on Canadian-built derivatives of the American M3 Lee and M4 Sherman tank chassis. Canada had set up to produce the Ram tank using the M3 chassis and Grizzly to complement US medium tank production; when Sherman production in the US expanded and supply was no longer a problem, it was decided in 1943 to switch the Canadian production lines to produce the Sexton to give the British Army a mobile artillery gun using their 87.6 mm (3.45 in) Ordnance QF 25-pounder gun-howitzer for commonality with towed guns. The Sexton could fire either HE shell or an armour-piercing shell. It found use in the Canadian and British Army, as well as numerous other British Empire and associated forces. Just after the war, a number of Grizzly and Sextons were sold to Portugal, who used them into the 1980s.

<span class="mw-page-title-main">Archer (tank destroyer)</span> Self-propelled artillery anti-tank gun

The Self Propelled 17pdr, Valentine, Mk I, Archer was a British tank destroyer of the Second World War based on the Valentine infantry tank chassis fitted with an Ordnance QF 17 pounder gun. Designed and manufactured by Vickers-Armstrongs, 655 were produced between March 1943 and May 1945. It was used in north-west Europe and Italy during the war; post-war, it served with the Egyptian Army. This vehicle was unusual in that its gun faced the rear of the chassis instead of the front.

<span class="mw-page-title-main">Cruiser Mk VIII Challenger</span> British WWII cruiser tank

The Tank, Cruiser, Challenger (A30) was a British tank of World War II. It mounted the QF 17-pounder anti-tank gun on a chassis derived from the Cromwell tank to add anti-tank firepower to the cruiser tank units. The design compromises made in fitting the large gun onto the Cromwell chassis resulted in a tank with a powerful weapon and reduced armour. The extemporised 17-pounder Sherman Firefly conversion of the US-supplied Sherman was easier to produce and, with delays in production, only 200 Challengers were built. The Challenger was able to keep up with the fast Cromwell tank and was used with them.

<span class="mw-page-title-main">Ordnance QF 17-pounder</span> Anti-tank gun and tank gun

The Ordnance Quick-Firing 17-pounder was a 76.2 mm (3 inch) gun developed by the United Kingdom during World War II. It was used as an anti-tank gun on its own carriage, as well as equipping a number of British tanks. Used with the APDS shot, it was capable of defeating all but the thickest armour on German tanks. It was used to 'up-gun' some foreign-built vehicles in British service, notably to produce the Sherman Firefly variant of the US M4 Sherman tank, giving British tank units the ability to hold their own against their German counterparts. In the anti-tank role, it was replaced after the war by the 120 mm BAT recoilless rifle. As a tank gun, it was succeeded by the 84 mm 20 pounder.

<span class="mw-page-title-main">M7 Priest</span> American self-propelled artillery vehicle

The 105 mm Howitzer Motor Carriage M7 was an American self-propelled gun vehicle produced during World War II. It was given the official service name 105 mm Self Propelled Gun, Priest by the British Army, due to the pulpit-like machine gun ring, and following on from the Bishop and the contemporary Deacon self-propelled guns.

<span class="mw-page-title-main">Ordnance QF 25-pounder</span> British field gun and howitzer used during the Second World War

The Ordnance QF 25-pounder, or more simply 25-pounder or 25-pdr, was the major British field gun and howitzer during the Second World War. Its calibre is 3.45-inch (87.6 mm). It was introduced into service just before the war started, combining both high-angle and direct-fire abilities, a relatively high rate of fire, and a reasonably lethal shell in a highly mobile piece. It remained the British Army's primary artillery field piece well into the 1960s, with smaller numbers serving in training units until the 1980s. Many Commonwealth of Nations countries used theirs in active or reserve service until about the 1970s and ammunition for the weapon is currently being produced by Pakistan Ordnance Factories. Initial production was slow, but by 1945, over 12,000 had been manufactured. The 25-pounder was probably the most outstanding field artillery piece used by British and Commonwealth forces in the Second World War, being durable, easy to operate and versatile.

<span class="mw-page-title-main">Ordnance QF 2-pounder</span> Tank gun and anti-tank gun

The Ordnance QF 2-pounder, or simply "2 pounder gun", was a 40 mm (1.575 in) British anti-tank gun and vehicle-mounted gun employed in the Second World War.

<span class="mw-page-title-main">Ram tank</span> Canadian medium tank

The Tank, Cruiser, Ram was a cruiser tank designed and built by Canada in the Second World War, based on the U.S. M3 Medium tank chassis. Due to standardization on the American Sherman tank for frontline units, it was used exclusively for training purposes and was never used in combat as a gun tank. The chassis was used for several other combat roles however, such as a flamethrower tank, observation post, and armoured personnel carrier.

<span class="mw-page-title-main">Kangaroo (armoured personnel carrier)</span> Armoured personnel carrier

A Kangaroo was a Canadian armoured personnel carrier (APC) during the Second World War which was created by converting a tank chassis. Kangaroos were created as an expedient measure "in the field" by the Canadian Army, and were so successful that they were used by other Commonwealth forces, including the British Army.

This article lists British armoured fighting vehicle production during the Second World War. The United Kingdom produced 27,528 tanks and self-propelled guns from July 1939 to May 1945, as well as 26,191 armoured cars and 69,071 armoured personnel carriers.

<span class="mw-page-title-main">Lend-Lease Sherman tanks</span> Medium tank

The United States provided tens of thousands of its Medium Tank M4, also named the Sherman, to many of its Allies during the Second World War, under the terms of Lend-Lease.

Tanks of the Second World War

<span class="mw-page-title-main">Charioteer (tank)</span> Medium Tank built from Cruiser Tank (based on weight, speed, caliber of gun, armor, and the text.).

The Charioteer Tank, or FV4101 Tank, Medium Gun, Charioteer was a post-world-war II British armoured fighting vehicle. It was produced in the 1950s to up-gun units of the Royal Armoured Corps continuing to use the Cromwell tank during the early phases of the Cold War. The vehicle itself was a modified Cromwell with a more powerful gun installed in a relatively lightly armoured two-man turret.

<span class="mw-page-title-main">17pdr SP Achilles</span> Self-propelled anti-tank gun

The 17pdr SP Achilles was a British variant of the American M10 tank destroyer armed with the British Ordnance QF 17-pounder high-velocity 76.2 mm (3-inch) anti-tank gun in place of the M10's considerably less powerful 3-inch Gun M7. A total of 1,100 M10s were converted to Achilles, making it the second most numerous armoured fighting vehicle to carry the 17-pounder gun, behind the Sherman Firefly tank.

The Royal Australian Armoured Corps Memorial and Army Tank Museum is located at Puckapunyal, an Australian Army training facility and base 10 km west of Seymour, in central Victoria, south-eastern Australia. The base is the home of the Royal Australian Armoured Corps.

<span class="mw-page-title-main">Australian Armour and Artillery Museum</span> Armour & Artillery Museum in Cairns, Australia

The Australian Armour and Artillery Museum is a privately owned museum dedicated to tanks, armoured vehicles and artillery from the Second World War and post war periods. It was officially opened in 2014, in Cairns, Queensland, Australia.

References