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86-619: Little Willie was a prototype in the development of the British Mark I tank . Constructed in the autumn of 1915 at the behest of the Landship Committee , it was the first completed tank prototype in history. Little Willie is the oldest surviving individual tank, and is preserved as one of the most famous pieces in the collection of The Tank Museum , Bovington, England. Work on Little Willie's predecessor began in July 1915 by

172-576: A Hotchkiss machine gun at each side. Later, subtypes were produced with machine guns only, which were designated "Female", while the original version with the protruding 6-pounder was called "Male". The Mark I entered service in August 1916, and was first used in action on the morning of 15 September 1916 during the Battle of Flers-Courcelette , part of the Somme Offensive . With the exception of

258-582: A combined operation was at the Battle of Cambrai in November 1917, when nearly 400 tanks working closely with advancing infantry and a creeping barrage overran the German lines in the initial attack. During the Battle of Amiens in August 1918, several hundred Mark V tanks, along with the new Whippet and Mk V* tanks, penetrated the German lines in a foretaste of modern armoured warfare. The German army recovered about 50 abandoned British Mark IV tanks from

344-495: A rhomboidal shape with a high climbing face of the track, designed to cross the wide and deep trenches prevalent on the battlefields of the Western Front . Due to the height necessary for this shape, an armed turret would have made the vehicle too tall and unstable. Instead, the main armament was arranged in sponsons at the side of the vehicle. The prototype, named " Mother " , mounted a 6-pounder (57 mm) cannon and

430-628: A "Heavy Branch", to the Machine Gun Corps until a separate Tank Corps was formed on 28 July 1917 by Royal Warrant . A small number of Mark I tanks took part in the Battle of the Somme during the Battle of Flers-Courcelette in September 1916. They were used to cut through barbed wire to clear the way for infantry, and were even driven through houses to destroy machine gunner's emplacements. Although many broke down or became stuck, almost

516-440: A better field of fire, but in the event the turret idea was abandoned and the aperture for the crew plated over. In the front of the vehicle two men sat on a narrow bench; one controlling the steering wheel, the clutch, the primary gear box and the throttle; the other holding the brakes. Overall length of the final version with the lengthened tracks and rear steering wheels in place was 8.08 m (26 ft 6 in). The length of

602-565: A bold disruptive camouflage pattern, although some appear to have retained the original khaki colour scheme. Although some of these tanks were used in the German Spring Offensive , they tended to be deployed in small numbers for mopping-up operations, while officers reported that they were unable to keep up with the fast-moving infantry. In the aftermath of the offensive, some 300 abandoned British tanks were behind German lines, of which 170 were reported to be repairable. By

688-466: A business man at the Ministry of Munitions had charge of the work of getting them built, and he did the task very well. Col Swinton and others also did valuable work. The Mark I was a rhomboid vehicle with a low centre of gravity and long track length, able to negotiate broken ground and cross trenches. The main armament was carried in sponsons on the hull sides. The hull was undivided internally;

774-640: A completely new hull – taller and with rounded track paths. The single main gun was in the front of the hull. It did not progress past the stage of a wooden mock-up; the project was cancelled in December 1917 in order that a tank co-developed with the US (the Mark VIII) could go forward. Mark Knothe, the Technical Liaison Officer between Stern, Elles and Anley, contributed to the development of

860-570: A mild improvement because of technical delays. The Mark V thus turned out very similar to the original design of the Mark IV – i.e. a greatly modified Mark III. Four hundred were built, two hundred each of Males and Females. Several were converted to Hermaphrodites (also known as "Composites") by fitting one male and one female sponson so that each tank had a 6-pounder. This measure was intended to ensure that female tanks would not be outgunned when faced with captured British male tanks in German use or

946-434: A pivoting gun (which could be fitted with a backless blast shield or unshielded). Often a collapsing bulwark would be mounted around the edge of an sponson to improve seaworthiness. Later examples of open-topped sponsons on warships were even used to mount fully-enclosed turrets upon and were sometimes combined with an embrasure of the hull. It can be used for storage as well as a transport platform for people entering or leaving

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1032-613: A planned (shared production) of 1,500 each, a single British prototype was finished by the end of the war. The British built just 24, the Americans completed 100 between September 1918 and 1920, at the Rock Island Arsenal , at a cost of $ 35,000 [£8,750] apiece ($ 430,000 [£226,000] in 2006 ). About 40 hulls for the U.S. Liberty were produced by the Manchester Tank Syndicate, 11 British Type Mark VIII by

1118-469: A rhomboid track frame was fitted, taking the tracks up and over the top of the vehicle. The rear steering wheels were retained in an improved form, but the idea of a turret was abandoned and the main armament placed in side sponsons . Number 1 Lincoln Machine was rebuilt with an extended (90 centimetres longer) track up to 6 December 1915, but merely to test the new tracks in Burton Park, near Lincoln;

1204-535: A smaller sponson for the females. Fifty were built. It was originally intended that the Mark III was to have all the proposed new design features of the Mark IV. This is why there were two distinct training types, the Mark II being little more than a slightly improved Mark I. However, development of the new features was so slow that the change from the Mark II was very gradual. The last two Mark IIIs were melted down in

1290-427: A sponson may refer to a mounting or enclosure projecting from the side or top of the structure/hull that is not used for buoyancy, but for armaments such as machine guns, or for purposes of visibility. In the case of warships of the late 19th to early 20th centuries, the sponson could be enclosed and combined with a casemate , similar to those of early British heavy tanks. Alternatively, a sponson could be open-topped for

1376-661: A third that attacked made it across no man's land , and their effect on the enemy was noted, leading to a request by the British C-in-C Douglas Haig for a thousand more. This came as a surprise: William Tritton had already started the development of a heavier tank: the Flying Elephant . Unfortunately for the Allies, it also gave the Germans time to develop a specifically designed anti-tank weapon for

1462-498: A wonder weapon that would quickly win the war. They were featured in films and popular songs. British tank crews came from other areas of the military, including infantry, cavalry, Machine Gun Corps, Flying Corps , Service Corps , and Royal Navy . Gunnery training occurred on the French coast, while driving instruction occurred on old German trenches near the front line. Tank Corps members were warned that poor performers would go to

1548-423: Is credited with inventing the terms. To aid steering, a pair of large wheels were added behind the tank. These were not as effective as hoped and were subsequently dropped. The subsequent Mark II, III, IV, and V, and later tanks, all bear a strong resemblance to Mother . The Gun Carrier Mark I was a separate design, intended to carry a field gun or howitzer that could be fired from the vehicle. In service, it

1634-415: Is more likely to be used on smaller craft that still require maneuverability through narrow passages. In the mid-1990s, advances in sponson design made sponsons a tool for better handling at high speeds, and they began being added to racing boats. There are essentially three types of sponsons for watercraft available on the market today – the basic block type, the hooked or winged type, and

1720-423: Is really to Mr Winston Churchill that the credit is due more than to anyone else. He took up with enthusiasm the idea of making them a long time ago, and he met with many difficulties. He converted me, and at the Ministry of Munitions he went ahead and made them. The admiralty experts were invaluable, and gave the greatest possible assistance. They are, of course, experts in the matter of armour plating. Major Stern,

1806-498: Is that riders can lean into turns more, making watercraft easier to push to their limits. Paddle or rudder-type sponsons, which use a flat paddle-shaped rudder attached vertically to a block-type sponson, do essentially the same thing, but the effect can be even more dramatic, because the flat paddle or rudder portion of the sponson provides a sharper and more pronounced edge to catch the water. On flying boats  – as first patented by Claudius Dornier and first used on

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1892-556: The Kaiserliche Marine ' s German World War I flying boat, the Zeppelin-Lindau Rs.IV  – a sponson can help extend the hull higher in the water, reducing drag and providing additional lift when the plane is taking off. Helicopters may also feature one or more sponsons, and though most helicopters are not designed to land in or take off from water, these safety features are important should

1978-573: The Battle of Arras in April 1917. The Germans were able to pierce the armour of both the Mark I and Mark II tanks at Arras with their armour-piercing machine gun ammunition. The Mark II was built from December 1916 to January 1917 by Foster & Co and Metropolitan (25 Male and 25 Female respectively). Five Mark IIs were taken for experiments on improved powerplants and transmission. They were provided to firms to show what improvements they could make over

2064-508: The Landship Committee to meet The United Kingdom's requirement in World War I for an armoured combat vehicle able to cross an 8-foot (2.4 m) trench. After several other projects where single and triple tracks had failed, on 22 July William Ashbee Tritton , director of the agricultural machinery company William Foster & Company of Lincoln , was given the contract to develop a "Tritton Machine" with two tracks. It had to make use of

2150-491: The Mark VIII , also known as "Liberty" or Anglo-American tank (though initially the French were partially involved). The engine, a 330 hp (250 kW) Ricardo petrol for British tanks and a 300 hp (220 kW) Liberty V12 for US ones to drive its 37 long tons (38 t)s) was compartmentalised from the crew of 12 (later reduced to 10), and the cupola structure included forward and rear firing machine guns. Of

2236-689: The North British Locomotive Company . They were used and upgraded until the 1930s, when they were given to Canada for training; some M1917s were sold to the Canadians at nominal scrap value. The tank itself was 34 ft 2 in (10.41 m) long and 10 ft 3 in (3.12 m) tall. At its widest across the sponsons it was 12 ft 4 in (3.76 m). There had been an even longer 44-foot (13 m) version planned but never made (the Mark VIII*). The tank

2322-568: The Third Ypres of July and August they found the swampy ground difficult and were of little use. About 432 Mark IV tanks were used during the Battle of Cambrai in November 1917. The first tank-to-tank battle was between Mk IV tanks and German A7Vs in the Second Battle of Villers-Bretonneux in April 1918. The Mark V was first intended to be a completely new design of tank, of which a wooden mock-up had been finished. However, when

2408-558: The centre of gravity too high when climbing a German trench parapet (which were typically four feet high), so the tracks were arranged in a rhomboidal form around the hull and the guns were put in sponsons on the sides of the tank. The reworked design was also able to meet the Army requirement to be able to cross an 8 ft (2.4 m) wide trench. A mockup of Wilson's idea was shown to the Landship Committee when they viewed

2494-514: The loading gauge . Rails on the roof carried an unditching beam whose purpose was to help extricate the tank from difficult trenches by attaching it to the tracks. A total of 1,220 were built: 420 males, 595 females and 205 tank tenders, which were supply tanks. The Mark IVs were used successfully at the Messines Ridge in June 1917, where they outpaced the infantry on dry ground, but in

2580-508: The Allies withdrew. 59 of them were captured by the Red Army and were used in 1921 during the Red Army invasion of Georgia and contributed to the Soviet victory in the battle for Tbilisi . The last Soviet Mark V tanks were finally retired in 1938. Two ex-Estonian Mark V tanks were used in the defence of Tallinn in August 1941. Sponson Sponsons are projections extending from

2666-618: The Armistice – the order was completed by Metropolitan Carriage in March 1919. Because the Mark V* had been lengthened, its original length-width ratio had been spoiled. Lateral forces in a turn now became unacceptably high, causing thrown tracks and an enormous turning circle. Therefore, Major Wilson redesigned the track in May 1918, with a stronger curve to the lower run reducing ground contact and

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2752-568: The Cambrai battlefield and were able to restore some 30 of them to running order. One was taken to Berlin and was demonstrated to the Kaiser , while the others went to a captured engineering plant near Charleroi for refurbishment. The machine guns were retained but rechambered to fire German ammunition, while the 6-pounders were replaced by captured Belgian 57 mm Nordenfelt guns. The captured tanks were painted with prominent Iron Cross emblems and

2838-406: The Germans developed the 13.2 mm Mauser 1918 T-Gewehr anti-tank rifle (introduced in mid-1918), and also a Geballte Ladung ("bunched charge") – several Stielhandgranate stick grenades bundled together for a much bigger explosion. A near hit by an artillery or mortar shell could cause the fuel tanks (which were placed high in the front horns of the track frames either side of

2924-850: The Germans' own A7V . The Mark V was first used in the Battle of Hamel on 4 July 1918, when 60 tanks contributed to a successful assault on the German lines by Australian units. It took part in eight further major engagements during the War. A number saw service in the Allied intervention in the Russian Civil War on the White Russian side. Most were captured and used by the Red Army in the Russian Civil War . Four were retained by Estonian forces , and two by Latvia. The Mark V*

3010-598: The Hotchkiss and Vickers machine guns in both the male and female variants, although the air-cooling system of the Lewis proved problematic and the Hotchkiss was later readopted. It had all its fuel stored in a single external tank, located between the rear track horns, in an attempt to improve crew safety. The smaller sponsons could be swung inwards on hinges to reduce the width of the tank for rail transportation, where previous models had required partial disassembly to fit within

3096-409: The Mark I system in an open competition. In the demonstrations held in March 1917, only three of them were able to compete alongside Mother , which had been fitted with a Daimler petrol-electric system. Wilson's epicyclic gear system , which replaced the secondary gear and the gearsmen, was clearly superior and adopted in later designs. The Mark III was a training tank and used Lewis machine guns and

3182-640: The Mark V. No Mark VIIs survive. When Stern was removed from his post following disagreements with the War Office, he was side-lined by appointment to a new department to work on a cooperative design between the Allies ;– assembly in France, hulls, guns and their ammunition from the UK and other components (principally the engines) from the US. American involvement in the development of the tank design led to

3268-483: The Second World War it may have been positioned to act as a pill box to defend the camp at Bovington. It is today displayed at The Tank Museum at Bovington. It is essentially an empty hull, without an engine, but still with some internal fittings. The rear steering wheels are not fitted and there is damage to the hull plating around the right–hand vision slit, possibly caused by an attempt at some point to tow

3354-529: The Second World War. They did not see action overseas. The Mark IV was a more heavily armoured version of the Mark I, and went into production in May 1917. Fundamental mechanical improvements had originally been intended, but had to be postponed. The main change was the introduction of the QF 6-pounder 6 cwt Hotchkiss , a shorter-barrelled version of the earlier gun. Improved 12 mm armour made it impervious to German armour-piercing rifle bullets. Lewis guns replaced

3440-477: The Solomon scheme was abandoned and tanks were painted with a single shade of dark brown. At the rear of the tank, a three, four or five-digit serial number was painted in white or yellow at the factory. At the front there was a large tactical marking, a prefix letter indicating the company or battalion, and a number (training tanks had no letter, but three numbers). Some tanks had their tactical number painted on

3526-554: The aircraft crash land in water. Sponsons on a helicopter can also store fuel or landing gear, e.g., the Sikorsky S-92 and the Bell 222 . When mounted on aircraft, they must be adjusted properly for aerodynamics when the aircraft is in flight; if they are not adjusted properly, the aircraft might become unstable or damage to the aircraft might occur. On land vessels, such as tanks or other military vehicles, and on naval warships,

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3612-423: The brakes, the other the primary gearbox) and two "gearsmen" (one for the secondary gears of each track) were needed to control direction and speed, the latter never more than a walking pace. As the noise inside was deafening, the driver, after setting the primary gear box, communicated with the gearsmen with hand signals, first getting their attention by hitting the engine block with a heavy spanner. For slight turns,

3698-498: The crew shared the same space as the engine. The environment inside was extremely unpleasant; since ventilation was inadequate, the atmosphere was contaminated with poisonous carbon monoxide , fuel and oil vapours from the engine, and cordite fumes from the weapons. Temperatures inside could reach 50 °C (122 °F). Men sometimes lost consciousness inside the tank but more often collapsed when getting out into fresh air. The symptoms were suggestive of carbon monoxide poisoning but

3784-459: The demonstration of Little Willie. At about this time, the Army's General Staff was persuaded to become involved and supplied representatives to the committee. Through these contacts Army requirements for armour and armament made their way into the design. The prototype Mark I, ready in December 1915, was called " Mother " (also known at various times as "The Wilson Machine", "Big Willie", and officially "His Majesty's Land Ship Centipede " ). Mother

3870-465: The driver could use the steering tail: an enormous contraption dragged behind the tank consisting of two large wheels, each of which could be blocked by pulling a steel cable causing the whole vehicle to slide in the same direction. If the engine stalled, the gearsmen would use the starting handle – a large crank between the engine and the gearbox. Many of these vehicles broke down in the heat of battle making them an easy target for German gunners. There

3956-421: The drivers' area, to allow gravity feed ) to burst open; a direct hit by any sort of artillery shell was more than enough to penetrate the armor and destroy the vehicle. Incinerated crews were removed by special Salvage Companies, who also salvaged damaged tanks. Steering was difficult, controlled by varying the speed of the two tracks. Four of the crew, two drivers (one of whom also acted as commander; he operated

4042-704: The end of the war, there were seven German tank battalions equipped with captured British tanks. In 1919, a number of British tanks were involved in the Allied intervention in the Russian Civil War ; 74 Mark V and Whippets formed the South Russian Tank Detachment which was landed on the Black Sea coast, while a much smaller North Russian Tank Detachment was sent to guard the port of Arkhangelsk . Attempts were made to train White Army troops in their use and they were left in their hands when

4128-420: The few interim Mark II and Mark III tanks, it was followed by the largely similar Mark IV, which first saw combat in June 1917. The Mark IV was used en masse, about 460 tanks, at the Battle of Cambrai in November 1917 . The Mark V, with a much improved transmission, entered service in mid-1918. More than two thousand British heavy tanks were produced. Manufacture was discontinued at the end of the war. The Mark I

4214-442: The front with the infantry, which the soldiers – having escaped what one described as "a horrible nightmare out of which we had just passed" – feared. When first deployed, British tanks were painted with a four-colour camouflage scheme devised by the artist Solomon Joseph Solomon . It was found that they quickly got covered with mud, rendering elaborate camouflage paint schemes superfluous. In late 1916,

4300-415: The high temperatures inside together with humidity were also identified as a possible cause. To counter the danger of bullet splash or fragments knocked off the inside of the hull, crews were issued with leather-and-chainmail masks. A leather helmet was also issued, to protect the head against projections inside the tank. Gas masks were standard issue as well, as they were to all soldiers at this point in

4386-611: The infantry, an armour-piercing 7.92 mm K bullet . Eight Mk I tanks were used against Turkish forces in the Second Battle of Gaza in April 1917 during the Sinai and Palestine Campaign. With its three destroyed tanks replaced by Mk IVs, the tank company fought at the Third Battle of Gaza . British tanks were used with varying success in the offensives of 1917 on the Western Front; however, their first large scale use in

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4472-504: The lengthened Mk Vs. Thirty-four were built out of an order for 200. The Mark X was a paper-only project to improve the Mark V, originally known as Mark V*** (L). This was basically a contingency plan in case the Mark VIII project failed (if so a production of 2000 was foreseen for 1919), trying to produce a tank with as many parts of the Mark V as possible but with improved manoeuvrability and crew comfort. The first tanks were added, as

4558-498: The main body by large spindles. New arrival by Tritton out of pressed plate. Light in weight but very strong. All doing well, Thank you. Proud Parents This system was unsprung, as the tracks were held firmly in place, able to move in only one plane. This was a successful design and was used on all First World War British tanks up to the Mark VIII , although it limited speed. The vehicle's 13 litre 105 bhp (78 kW) Daimler-Knight engine, gravity fed by two petrol tanks,

4644-448: The main body of the vessel can be attached and removed quickly and fairly easily. Canoes and kayaks sometimes feature sponson attachments as well, for stability in rough waters. These differ from outriggers , which extend a significant distance away from the body of the craft, and are employed on craft designed for open waters. A sponson's terminus is close to the craft, thereby allowing the boat to maneuver through narrower spaces, and so

4730-554: The main unit without the rear steering wheels installed is 5.87 m (19 ft 3 in). Most mechanical components, including the radiator, had been adapted from those of the Foster-Daimler heavy artillery tractor . As at least four men would have been required to operate the armament, the crew could not have been smaller than six. The maximum speed was indicated by Tritton as being no more than two miles per hour. The vehicle used no real armour steel, just boiler plate; it

4816-399: The most common type. In addition to added lift during acceleration, better side-to-side stability, and reduced porpoising, they provide improved handling. "The outside edge provides grip in turns, allowing you to turn sharper and faster without fear of the back end sliding out. They can also provide a pivot point for the hull in turns." One of the most overlooked benefits of this type of sponson

4902-422: The new engine and transmission originally destined for the Mark IV became available in December 1917, the first, more advanced Mark V design was abandoned for fear of disrupting the production run. The designation "Mark V" was switched to an improved version of the Mark IV, not equipped with the new systems. The original design of the Mark IV was to be a large improvement on the Mark III but had been scaled back to be

4988-402: The obvious danger of overheating, there were many fans, louvres and radiators. However, steering was easy and gradual and the version was taken into production to equip one tank battalion. Three had been built, and only one delivered out of an order for 74 when war ended. It was passed over in favour of the Mark VIII, which was ordered at the same time. The hull was slightly lengthened compared to

5074-417: The paddle or rudder type. The block type is the simplest type. The leading end is usually rounded or pointed for reduced drag. "Its main function is to provide additional lift on the back of the hull, mostly during acceleration. It can also help provide better side-to-side stability at speed and reduce porpoising by providing a bit more hull surface at the rear of the craft." Winged or hooked sponsons are

5160-641: The roof for air recognition. Later, vertical red and white stripes were painted on the front to aid recognition after the Germans began deploying captured British tanks. Tanks were often given individual names and these were sometimes painted on the outside. A small handful were known to carry artwork (similar to aircraft nose art ). The first tanks were known as the Mark I after the subsequent designs were introduced. Mark Is that were armed with two 6 pounder guns and three .303 Hotchkiss machine guns were called " Male " tanks; those with four Vickers machine guns and one Hotchkiss were called " Female ". Ernest Swinton

5246-629: The second prototype was seen as much more promising. The first was renamed Little Willie, the scabrous name then commonly used by the British yellow press to mock the German Imperial Crown Prince Wilhelm ; Mother was for a time known as Big Willie, after his father Emperor Wilhelm II of Germany. That same year the cartoonist William Kerridge Haselden had made a popular comic anti-German propaganda movie: The Adventures of Big and Little Willie . Although Little Willie

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5332-576: The sides of land vehicles, aircraft or watercraft to provide protection, stability , storage locations, mounting points for weapons or other devices, or equipment housing. On watercraft, a sponson is a projection that extends outward (usually from the hull, but sometimes other parts of the vessel) to improve stability while floating, or to act as a securing point for other equipment. Vessels with unstable body shapes or unevenly distributed weight are likely to feature sponsons to help prevent capsizing or other instabilities. On many vessels, these projections from

5418-485: The tank had stopped and erected a very tall mast that carried the aerial array. The Mark II incorporated minor improvements over the Mark I. With the Army declaring the Mark I still insufficiently developed for use, the Mark II (for which orders were first placed in July) would continue to be built, but would be used only for training. Due to this intended role, they were supposedly clad in unhardened steel, though some doubt

5504-651: The tank, designing a longer Mark I with Williams-Janney hydraulic transmission; one of the Mark IIs used as test vehicles had used a hydraulic transmission. In October 1917 Brown Brothers in Edinburgh were granted a contract to develop this line of research further. In July 1918, the prototype was ready. Its drive system was very complex. The 150 hp (112 kW) Ricardo engine drove into Variable Speed Gear Ltd. pumps that in turn powered two hydraulic motors, moving one track each by means of several chains. To ward off

5590-617: The track assemblies – lengthened tracks and suspension elements (seven road wheels instead of four) – purchased as fully built units from the Bullock Creeping Grip Tractor Company in Chicago . On 11 August actual construction began; on 16 August Tritton decided to fit a wheeled tail to assist in steering. On 9 September the Number 1 Lincoln Machine, as the prototype was then known, made its first test run in

5676-417: The tracks widened to 26.5 in (673 mm). The Mark V engine was bored out to give 225 hp (168 kW) and was sat further back in the hull. The cabin for the driver was combined with the commander's cabin; there now was a separate machine gun position in the back. Of a revised order for 700 tanks (150 Females and 550 Males), only 25 were built and only one of those by the end of 1918. The Mark VI

5762-406: The vehicle (about 16 tons). Tritton and Lieutenant Walter Gordon Wilson tried several types of alternative track design, including balatá belting and flat wire ropes . Tritton, on 22 September, devised a robust but outwardly crude system using pressed steel plates riveted to cast links and incorporated guides to engage on the inside of the track frame. The track frames as a whole were connected to

5848-664: The vehicle by passing a cable through the slit. This would have torn the tank's comparatively thin steel plating. Background: History of the tank , Tank classification , Tanks in World War I Background: History of the tank , Tanks in the British Army Mark I tank British heavy tanks were a series of related armoured fighting vehicles developed by the UK during the First World War . The Mark I

5934-422: The war due to use of chemical weapons by both sides . The side armour of 8 mm initially made them largely immune to small arms fire, but could be penetrated by the recently developed armour-piercing K bullets (introduced mid-1917). There was also the danger of being overrun by infantry and attacked with grenades. The next generation had thicker armour, making them nearly immune to the K bullets. In response,

6020-479: The yard of the Wellington Foundry. It soon became clear that the track profiles were so flat that ground resistance during a turn was excessive. To solve this, the suspension was changed so that the bottom profile was more curved. Then the next problem showed up: when crossing a trench the track sagged and then would not fit the wheels again and jammed. The tracks were also not up to carrying the weight of

6106-497: Was a development of Little Willie , the experimental tank built for the Landship Committee by Lieutenant Walter Wilson of the Royal Naval Air Service and William Tritton of William Foster Co., between July and September 1915. It was designed by Wilson in response to problems with tracks and trench-crossing ability discovered during the development of Little Willie. A gun turret above the hull would have made

6192-506: Was a major step forward in military technology, being the first tank prototype to be finished. During the remainder of World War I, some tank crews continued to informally refer to their vehicles as "Willies" or "buses". In 1922 the Royal Tank Regiment adopted a folk song called My Boy Willie as its regimental march. Little Willie was preserved for posterity after the war, having been saved from being scrapped in 1940. During

6278-459: Was a version with a stretched hull, lengthening it by 6 ft (1.8 m). It had a larger cupola on the roof and doors in the side of the hull (previous versions had small hatches under the sponsons of females or small doors in the rear of the sponson for males, along with a small hatch in the rear). The extra section was also designed to house a squad of infantry. The weight was 33 tons. Of orders for 500 Males and 200 Females, 579 had been built by

6364-446: Was at the back, leaving just enough room beneath the turret. The prototype was fitted with a non-rotatable dummy turret mounting a machine gun; a Vickers 2-pounder (40 mm) Maxim gun ("Pom-pom") was to have been fitted, with as many as six Madsen machine guns to supplement it. The main gun would have had a large ammunition store with 800 rounds. Stern suggested to Tritton that the gun could be made to slide forward on rails, giving

6450-493: Was cast on this claim in early 1917. Initially, 20 were shipped to France and 25 remained at the training ground at Wool, Dorset in Britain; the remaining five were kept for use as test vehicles. As the promised Mark IV tanks had not arrived by early 1917, it was decided, despite the protestations of Stern (see below), to ship the 25 training vehicles in Britain to France, where they joined the other 20 Mark IIs and 15 Mark Is at

6536-399: Was decided to equip half of them with just machine guns. A new sponson design with two Vickers machine guns in rotating shields was produced. Later in the war, when newer tanks came into use, some Mark Is were converted to be used for carrying supplies. A few Female Mark Is were used as mobile wireless stations by installation of a wireless transmitter. The radio could only be operated once

6622-481: Was demonstrated alongside Mother in January 1916, it was by then peripheral to the development of British tanks. In June 1916 the tank was transferred to the tank training area near Elveden . After a period at the training area it sent back to its original manufactures who may have used it for tests relating to the development of the whippet tank. By 1925 it was at Bovington. Though it never saw combat, Little Willie

6708-435: Was intended to use 10 mm plating for production. Wilson was unhappy with the basic concept of the Number 1 Lincoln Machine, and on 17 August suggested to Tritton the idea of using tracks that ran all around the vehicle. With d'Eyncourt's approval construction of an improved prototype began on 17 September. For this second prototype (later known as " HMLS [His Majesty's Land Ship] Centipede ", and, later still, "Mother"),

6794-858: Was mostly used for carrying supplies and ammunition. Forty-eight of them were built. Initial production of the Mark I was to be by Fosters and Metropolitan: 25 from Fosters and 75 from Metropolitan, which had greater capacity in Wednesbury at the Old Park site of the Patent Shaft Company, a subsidiary of the Metropolitan. Metropolitan also received an order for a further 50 so that the Army would be able to raise six tank companies of 25 tanks each and set up further production under their Oldbury Wagon and Carriage Company. As there were not enough 6-pounder guns available for all 150 tanks, it

6880-548: Was no wireless ( radio ); communication with command posts was by means of two pigeons, which had their own small exit hatch in the sponsons, or by runners. Because of the noise and vibration, early experiments had shown that radios were impractical, therefore lamps, flags, semaphore, coloured discs, and the carrier pigeons were part of the standard equipment of the various marks. During the First World War, British propaganda made frequent use of tanks, portraying them as

6966-471: Was one of a pair of related projects to develop the tank initiated in late 1916. The Mark V would be the application of as many advanced features as could be managed on the Mark I hull design and the Mark VI would be a complete break with the Mark I hull. The Mark V would not be built as such, because of the delays with the Mark IV and it would be a different Mark V that was built. The Mark VI project design had

7052-467: Was outdated by the 1930s due to its slow speed (under 6 mph (9.7 km/h) and thin armour (6–16 mm), but it did have one of the longest independent trench crossing capabilities of any armoured fighting vehicle (AFV) ever made; later tanks used bridge laying tanks for crossing large deep trenches. The Mark IX was a troop carrier and infantry supply vehicle – among the first tracked armoured personnel carriers not counting experiments with

7138-454: Was placed on 12 February 1916, and a second on 21 April. Fosters built 37 (all "male"), and Metropolitan Carriage, Wagon, and Finance Company, of Birmingham, 113 (38 "male" and 75 "female"), a total of 150. When the news of the first use of the tanks emerged, Lloyd George commented, Well, we must not expect too much from them but so far they have done very well, and don't you think that they reflect some credit on those responsible for them? It

7224-466: Was re-constituted as the "Tank Supply Committee" under the chairmanship of Albert Stern; Ernest Swinton, who had promoted the idea of the tank from the Army angle was also a member. General Haig sent a staff officer Hugh Elles to act as his liaison to the Supply Committee. Swinton would become the head of the new arm, and Elles the commander of the tanks in France. The first order for tanks

7310-573: Was successfully demonstrated to the Landship Committee in early 1916; it was run around a course simulating the front including trenches, parapets, craters and barbed wire obstacles. The demonstration was repeated on 2 February before the cabinet ministers and senior members of the Army. Kitchener, the Secretary of State for War , was skeptical but the rest were impressed. Lloyd George, at the time Minister of Munitions, arranged for his Ministry to be responsible for tank production. The Landship Committee

7396-544: Was the world's first tank , a tracked, armed, and armoured vehicle, to enter combat. The name "tank" was initially a code name to maintain secrecy and disguise its true purpose. The tank was developed in 1915 to break the stalemate of trench warfare . It could survive the machine gun and small-arms fire in " no man's land ", travel over difficult terrain, crush barbed wire , and cross trenches to assault fortified enemy positions with powerful armament. Tanks also carried supplies and troops. British heavy tanks are distinguished by

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