Mark IX tank
Encyclopedia
The Mark IX tank was a British armoured fighting vehicle
from the First World War, the world's first specialised Armoured Personnel Carrier
(APC).
s it became clear that often infantry could not keep up with the tanks; not because soldiers were too slow - the early tanks themselves could only move at a walking pace - but because of enemy machine gun fire, the reason that tanks were invented in the first place. Often positions gained at very great cost would immediately be lost again for lack of infantry to consolidate. At first it was thought this problem could be solved by cramming a few infantry soldiers into each tank. It soon transpired however that the atmosphere quality in the tanks was so poor that infantry, if not losing consciousness outright, would at least be incapacitated for about an hour after leaving the tank, merely to recover from the noxious fumes.
Therefore, in the summer of 1917, Lieutenant G.R. Rackham was ordered to design an armoured vehicle specifically for troop transport. At first the design was complicated by the demand that the vehicle should also be capable of being fitted with sponsons, so that it could be turned into a more modern tank in case the Mark VIII tank design proved to be a failure. This is why the type was designated as a tank, the Mark IX. However, this requirement was soon dropped and in September 1917 construction began by Armstrong, Whitworth & Co.
in Newcastle-upon-Tyne of two prototypes of the pure transport vehicle (which could also serve as a supply tank). The prototypes were approved in the following year and 200 vehicles were ordered to be built by the tractor manufacturer Marshall, Sons & Co.
of Gainsborough, Lincolnshire
. At the time it had become clear that even the stretched Mark V* tank was not really suited for infantry transport.
Only three vehicles were finished at the time of the Armistice
and only 34 were built in total.
The crew proper consisted of a driver sitting on the left and a commander sitting to the right of him (the first time for a British tank, showing adaptation to the traffic conditions in France), a mechanic and a machine gunner who could man a gun in a hatch at the back. A second machine gun was fitted in the front. Along each side of the hull were eight loopholes, through which the soldiers could fire their rifles, making the Mark IX also the world's first Infantry Fighting Vehicle
. Two of the loopholes were in the two oval side doors on each side.
Despite using thinner (10 mm) armour plate, the weight was still 27 tons and the speed only 4 mph (7 km/h). The tank could also carry supplies in a tray on the roof behind the commander's armoured observation turret (being the highest point at 2.64 metres), while towing up to three loaded sledges.
Rackham tried to improve internal conditions
by putting a large silencer on the roof together with ventilation fans; there was no separate engine room however. Because of this lack of compartmentalisation it is questionable whether the project reached its original goal of designing a vehicle capable of delivering a squad of infantry in fighting condition.
. It already had large bulk; this was improved by fitting drums at the front and sides. Long wooden boards were attached to the track links but at one side of the board only; as they reached the curve of the track they would project out propelling the tank through the water. Pictures were made of a floating tank in Hendon Reservoir
at 11 November 1918, the very day of the Armistice. There is an oral tradition that this vehicle was named The Duck, but there is a strong suspicion as to its veracity.
The last Mark IX survives at the Bovington Tank Museum
.
Armoured fighting vehicle
An armoured fighting vehicle is a combat vehicle, protected by strong armour and armed with weapons. AFVs can be wheeled or tracked....
from the First World War, the world's first specialised Armoured Personnel Carrier
Armoured personnel carrier
An armoured personnel carrier is an armoured fighting vehicle designed to transport infantry to the battlefield.APCs are usually armed with only a machine gun although variants carry recoilless rifles, anti-tank guided missiles , or mortars...
(APC).
Development
During the first actions with tankTank
A tank is a tracked, armoured fighting vehicle designed for front-line combat which combines operational mobility, tactical offensive, and defensive capabilities...
s it became clear that often infantry could not keep up with the tanks; not because soldiers were too slow - the early tanks themselves could only move at a walking pace - but because of enemy machine gun fire, the reason that tanks were invented in the first place. Often positions gained at very great cost would immediately be lost again for lack of infantry to consolidate. At first it was thought this problem could be solved by cramming a few infantry soldiers into each tank. It soon transpired however that the atmosphere quality in the tanks was so poor that infantry, if not losing consciousness outright, would at least be incapacitated for about an hour after leaving the tank, merely to recover from the noxious fumes.
Therefore, in the summer of 1917, Lieutenant G.R. Rackham was ordered to design an armoured vehicle specifically for troop transport. At first the design was complicated by the demand that the vehicle should also be capable of being fitted with sponsons, so that it could be turned into a more modern tank in case the Mark VIII tank design proved to be a failure. This is why the type was designated as a tank, the Mark IX. However, this requirement was soon dropped and in September 1917 construction began by Armstrong, Whitworth & Co.
Armstrong Whitworth
Sir W G Armstrong Whitworth & Co Ltd was a major British manufacturing company of the early years of the 20th century. Headquartered in Elswick, Newcastle upon Tyne, Armstrong Whitworth engaged in the construction of armaments, ships, locomotives, automobiles, and aircraft.-History:In 1847,...
in Newcastle-upon-Tyne of two prototypes of the pure transport vehicle (which could also serve as a supply tank). The prototypes were approved in the following year and 200 vehicles were ordered to be built by the tractor manufacturer Marshall, Sons & Co.
Marshall, Sons & Co.
-External links:* – at the Powerhouse Museum, Sydney, Australia...
of Gainsborough, Lincolnshire
Gainsborough, Lincolnshire
Gainsborough is a town 15 miles north-west of Lincoln on the River Trent within the West Lindsey district of Lincolnshire, England. At one time it served as an important port with trade downstream to Hull, and was the most inland in England, being more than 55 miles from the North...
. At the time it had become clear that even the stretched Mark V* tank was not really suited for infantry transport.
Only three vehicles were finished at the time of the Armistice
Armistice
An armistice is a situation in a war where the warring parties agree to stop fighting. It is not necessarily the end of a war, but may be just a cessation of hostilities while an attempt is made to negotiate a lasting peace...
and only 34 were built in total.
Description
As there was no time for a completely new design, the Mark IX was based on the Mark V, with the hull lengthened to 9.73 m. The 150 hp Ricardo engine was moved to the front, the gearbox to the back and the suspension girders left out entirely. This created an inner space 4 metres long and 2.45 m wide, enough room for thirty (officially even fifty) soldiers or ten tons of cargo. To ensure sufficient stiffness for the chassis, the floor was reinforced by heavy transverse girders. The infantry inside had to contend with the control rods for the gears running along the roof and the drive shaft through the middle. No seats were provided for them.The crew proper consisted of a driver sitting on the left and a commander sitting to the right of him (the first time for a British tank, showing adaptation to the traffic conditions in France), a mechanic and a machine gunner who could man a gun in a hatch at the back. A second machine gun was fitted in the front. Along each side of the hull were eight loopholes, through which the soldiers could fire their rifles, making the Mark IX also the world's first Infantry Fighting Vehicle
Infantry fighting vehicle
An infantry fighting vehicle , also known as a mechanized infantry combat vehicle , is a type of armoured fighting vehicle used to carry infantry into battle and provide fire support for them...
. Two of the loopholes were in the two oval side doors on each side.
Despite using thinner (10 mm) armour plate, the weight was still 27 tons and the speed only 4 mph (7 km/h). The tank could also carry supplies in a tray on the roof behind the commander's armoured observation turret (being the highest point at 2.64 metres), while towing up to three loaded sledges.
Rackham tried to improve internal conditions
Ergonomics
Ergonomics is the study of designing equipment and devices that fit the human body, its movements, and its cognitive abilities.The International Ergonomics Association defines ergonomics as follows:...
by putting a large silencer on the roof together with ventilation fans; there was no separate engine room however. Because of this lack of compartmentalisation it is questionable whether the project reached its original goal of designing a vehicle capable of delivering a squad of infantry in fighting condition.
Operational History and Project
The Mark IX's were used for some years after the war. The type was named The Pig as the low front of the track looked like the snout of one. One of the first three was used as an armoured ambulance. One other was rebuilt as an amphibious tank by the staff of the test base at Dollis HillDollis Hill
Dollis Hill is an area of north-west London. It lies close to Willesden, in the London Borough of Brent. As a result, Dollis Hill is sometimes referred as being part of Willesden, especially by the national press...
. It already had large bulk; this was improved by fitting drums at the front and sides. Long wooden boards were attached to the track links but at one side of the board only; as they reached the curve of the track they would project out propelling the tank through the water. Pictures were made of a floating tank in Hendon Reservoir
Brent Reservoir
The Brent Reservoir is a reservoir which straddles the boundary between the London boroughs of Brent and Barnet and is owned by British Waterways...
at 11 November 1918, the very day of the Armistice. There is an oral tradition that this vehicle was named The Duck, but there is a strong suspicion as to its veracity.
The last Mark IX survives at the Bovington Tank Museum
Bovington Tank Museum
The Tank Museum is a collection of armoured fighting vehicles in the United Kingdom that traces the history of the tank. With almost 300 vehicles on exhibition from 26 countries it is the second-largest collection of tanks and armoured fighting vehicles in the world.The Musée des Blindés in France...
.