|
The Tank Story - The
Beginning
The Landships
Committee
- The idea
of an armoured tracked vehicle that would provide protection from
machines gun fire was first proposed by Colonel Earnest Swinton
based on his observation of trench warfare.
- Rejected
by the Army, his proposal was sent to Winston Churchill, the then
navy Minister, who set up the Landships Committee in February
1915 to study the possibility of breaking the trench deadlock
by creating a 'Trojan Horse' for transporting soldiers into enemy
lines.
- This Committee
went beyond this original concept thought to be impractical and
together with the newly formed Inventions Committee, produced
a specification for an armed vehicle and fighting platform.
- The specification
included: (1) a top speed of 4 mph on flat ground - the speed
of marching infantry; (2) the capability of a sharp turn at top
speed; (3) a reversing capability; (4) the ability to climb a
5-foot earth parapet; (6) the ability to cross a 8-foot gap; (7)
a vehicle that could house ten crew, two machine guns and a 2-pounder
gun.
Little Willie
'Little
Willie'
- The first
prototype completed in December 1915 was an unarmed tracked vehicle
called 'Little Willie'.
- Already it
embraces all the principles of later tanks such as tracks running
the whole length of a fully-armoured body.
- A revolving
gun turret was envisaged but this was dropped when it would make
the already 10 foot tall vehicle too high.
- 'Little Willie'
was 12 feet long and weight 14 tons. It had a crew of three and
a top speed of 3.5mph on road and half that across country.
- It was apparent
that 'Little Willie' was fine as a test bed but a new design,
already in development, was needed to turn it into a fighting
vehicle.
Big Willie
or Mother
- The second
design and prototype, called 'Big Willie' or simply 'Mother',
was completed soon after 'Little Willie'.
- Based on
a rectangular box hull similar to 'Little Willie' sandwiched by
more radically rhomboidal shaped track frames that carry the tracks
right round the hull. A set of rear wheels or limber trailing
the main body was used to help with steering. It ran for the first
time on January 1916.
- 'Big Willie'
had a crew of eight; four to operate the tank (driver, gearsman,
2 brakesmen) and four to operate the armament (2 gunner, 2 machine-gunners/loaders).
It had 10mm of frontal, 8mm of side armour and can travel at just
under 4mph.
- Because of
the already considerable height, the rotating turret idea was
dropped in favour of 'sponsons' blistered into the sides of the
hull carrying the main armaments; twin 6-pounder or 57mm guns
sourced from the Navy. It was intended that these sponsons can
be removed from the production model for transport.
Males, Females
& Hermophrodites
- During the
design stage, there was some doubt expressed as to whether gun-armed
vehicles would be able to hold off attack by massed infantry so
it was decided that half of the production would be 'females'
carrying .303 inch Vickers machine guns in place of the 6-pounder
guns on the 'males'.
- The female
was armed only with machine guns and was intended for attacking
enemy personnel and light fortifications. The male was armed with
machine guns and two 6-pounder naval guns. The intention of the
male was to attack other gun emplacements and strong points.
- When the
German start to deploy their own captured tanks in April 1918,
some 'females' were fitted with a male sponson containing a 6-pounder
gun on the right side so that they can defend themselves. These
conversions were known as 'hermophrodites'.
The Advent
of the Tank
- A new unit
known for security reasons as the Heavy Section, Machine Gun Corps.
Was formed to man these vehicles in May 1916.
- Though originally
called 'The Landship', for security reasons, these vehicles were
designated 'Mobile Water Tanks' for desert warfare during manuafacturing
and shipped to France from England labelled as 'Water Tanks' thus
giving them the name by which they have been known ever since.
Mark 1 to
Mark III Tanks
- After successful
trials of 'Big Willie' during the early part of 1916, one hundred
(later increased to 150) of what would become known as the Mark
I tank were ordered for deployment in France. Half was to be completed
as 'males' and half as 'females'.
- No lights
were fitted inside the Mark I tank and ventilation was poor. The
tracks did not have suspension or any mean of shock absorption.
The resulting noise, smoke and heat within the gloomy and confined
interior produced an extremely exhausting fighting environment
for the crew. Communications between crew members were only possible
by hand signals.
- Significant
improvements to overcome these deficiencies and also as a result
of combat experience were introduced in the subsequent Mark II
and Mark III. Otherwise they were identical except for minor changes.
Frontal armour was increased to 12mm to overcome German armour-piercing
bullets.
- The rear
steering wheels proved impossible to use in comabt and was discarded
from November 1916.
- Mark II Improvements
included a wider track link in every 6 to increase movement performance
on soft ground.
- Mark III
Improvements included a raised manhole hatch on the top of the
hull and late production vehicles has a smaller sponson and a
lower calibres and therefore shorter 6-pounder gun as was later
fitted in the Mark IV.
- Production
of Mk. I, Mk. II and Mk. III tanks were limited to 200. 100 were
Mark Is, 50 Mark IIs and 50 Mark IIIs.
Mark I Specification
| Crew: |
8 (4 to
operate the tank and 4 to operate the armaments) |
| Armament:
|
(Male)
2 x 40 calibres 6-pounder guns, 4 x 8mm Hotchkiss machine-guns.
(Female) 4 x .303in Vickers machine-guns, one 8mm Hotchkiss
machine-gun. The female sponson was slightly larger than the
male. |
| Armour:
|
10mm frontal
(increased to 12mm from Mk. II onward to overcome German armour-piercing
bullets), 8mm side (increased to 10mm). 6mm top and rear. |
| Dimensions:
|
Length
32ft 6in, width 13ft 9in (male) 14ft 4in (female), Height 8ft
half inch. |
| Combat
Weight: |
62,720lb
(28,450kg) for male, 60,480lb (27,434kg) for female. |
| Engine:
|
Daimler
six-cylinder inline water-cooled patrol engine developing 105hp
at 1,000rpm. |
| Performance:
|
Speed
3.7mph (6.95km/h), range 23.5 miles (37.8km), vertical obstacle
4ft 6in (1.35m), trench crossing 11ft 6in (3.45m), gradient
24 percent. |
Mark IV Tank
- The Mark
IV is perhaps the best known of the First World War Tanks.
- The Mark
IV retained the same classic Rhomboidal shape and incorporates
the improvements made since Mark I through Mark II and Mark III
resulting in a much improved and more effective fighting vehicle.
- Outwardly
the Mark IV appears little different to its predecessors but there
were many detailed changes.
- The crew
compartment was better ventilated and extra escape hatches were
fitted to the roof as well as the sides.
- A silencer
was fitted to the exhaust to reduce the noise level inside. Engine
power was up-rated but still underpowered and the fuel system
improved. Range was increased by more patrol being carried in
armoured tanks outside of the top of the hull toward the rear.
- Running gears
were strengthened in key places and the tracks widened with studs
added to some track links to improve traction.
- A rectangular
unditching beam used to overcome obstacles was carried as standard
on top of the tank along a new set of rails.
- Mark IVs
have lower 23 calibres (from previously 40 calibres) main guns
with shorter barrels to eliminate the danger of the muzzle being
dug into the ground when crossing wide trenches.
- Both the
male and female sponsons were redesigned to stop the botton leading
edage catching when passing over rough ground.
- For a time,
.303in Lewis machine-guns were installed due to shortage of the
Hotchkiss Machine-gun. The wide cooling jacket around the Lewis
guns proved to be susceptible to small arms fire and also requires
larger holes to be cut into the armour.
- The sponsons
on Mark IVs were hinged to allow them to be swung in for transport.
- The Mark
IV became the workhorse of the tank corps from September 1917
to the end of the war. 420 male and 595 female Mk. IVs were produced
in total.
- Some Mark
IVs were fitted with an extended 9 feet 'tadpole' tail to increase
the trench-crossing ability.
Mark IV Specification
| Crew: |
8 (same
arrangement as previous marks) |
| Armament:
|
(Male)
2 x 23 calibres 6-pounder guns, 4 x .303in Lewis machine-guns.
(Female) 6 x .303in Lewis machine-guns. (Lewis machine-guns
replaced by Hotchkiss 8mm machine-guns in later Mark IVs) |
| Armour:
|
14mm frontal,
12mm side. 8mm top and rear. |
| Dimensions:
|
Length
26ft 5in, width 13ft 9in, Height 8ft 2 inch. |
| Combat
Weight: |
62,720lb
(28,450kg) for male, 60,480lb (27,434kg) for female. |
| Engine:
|
Daimler
six-cylinder inline water-cooled patrol engine developing 125hp.
(150bhp in later Mark 5s) |
| Performance:
|
Speed
3.7mph (6.95km/h), range 35 miles (56km), vertical obstacle
4ft 6in (1.35m), trench crossing 10in (3.0458), gradient 24
percent. |
Mark V to
Mark IX Tanks
- The Mark.
IV was followed by five later marks of the now familiar Rhomboidal
or lozenge-shaped tank but only the Mark V was produced in any
significant quantity.
- The Mark
V was an improved Mark IV and it was the first heavy tank that
could be driven by one man without the need for others to work
the gears and brakes through a new drive and gear system.
- Some Mark
Vs were fitted with an extended 'tadpole' tail to increase the
trench-crossing ability similar to the Mark IVs.
- Many variants
of the Mark V were developed to fulfil various roles on the battlefield
including carrying supply, recovery of damaged tanks, bridge laying,
mine clearing and laying fascine to allow wide trenches to be
crossed. In
total, 200 male and 200 female of the various Mark 5 variant was
produced.
- The Mark
V* was a widen version introduced in 1918 that can carry an additional
24 infantrymen. 200
male and 432 female of the Mark 5* variant was produced.
- There were
also Mark V** and Mark V*** variants but few were built and none
were introduced to combat.
- The design
of the Mark VI was a radically departure from previous heavy tanks.
It was smaller, lighter and faster and the main 6-pounder gun
was to be located low and front of the hull. Five machine-guns
were to be installed in support two of which were in small side
sponsons. Only a mock-up of this vehicle was ever produced.
- The Mark
VII was an experimental design. It was the first to have an electric
starter. Only one was ever produced.
- The Mark
VIII began life as a joint venture between Britain, France and
the United States of America to supply 1500 tank to the new United
States 'Tank Corps' being established in the Summer of 1917.
- By the time
all the fine details were agreed on, the war ended and the French
left the partnership. Only a few prototypes was completed. The
United States decided to go ahead anyway and produced 100 Mark
VIIIs alone.
- The Mark
VIII was referred to the Anglo-American or Liberty tank. It was
was an enlarged and improved version of the rhomboid-type heavy
tank, with better track, greater trench-crossing ability, and
a powerful Ricardo or Liberty V-12 engine in a sealed engine compartment
generating 300/340 bhp. It carried a crew of 11.
- The Mark
VIII remained in service in the U.S.A. until the mid 1930s undergoing
various upgrades during it's life to improve and extend it's service
capabilities. This was perhaps the best design to emerge from
the series.
- The Mark
IX was designed to be an infantry supply vehicle rather than a
fighting machine and due to its ungainly appearance became known
as 'The Pig'.
- 'The Pig'
was large enough to carry 50 men or 10 tons of equipment. Plans
for 200 were called for buy only 23 were ever made. The machine
had large side doors and a large load area but was very underpowered
and suffered from poor performance.
- In 1919,
one 'Pig' was made amphibious and called 'The Duck', by adding
a raised cab, flotation devices, and a modified exhaust. Propulsion
was provided by a motor at the rear and paddles attached at various
intervals on the tracks.
- By 1919 these
large, heavy, slow-moving and vulnerable vehicles were obsolete
and were replaced by lighter and faster models.
First Tank
Deployment
- Tanks as
we know it today in the form of the Mark Is were first deployed
in anger in September 1916 by the British.
- Original
plan was to deploy the tanks in a massed attack to achieve surprise
and to maximise its shock value.
- It was instead
thrown into action in panic at the fast deteriorating situation
with the bogged-down Somme offensive
- Out of an
initial force of 50 tanks, only 36 made it to the start line due
to mechanical failures and other defects.
- Only a very
few of the original force reached their objectives but those that
did keep going, swept all opposition before them.
- Despite an
inauspicious beginning, the observing army staff was sufficiently
impressed to instigate ordering 1,000 of the new fighting vehicle
thus safeguarding the role of the tank on future battlefields.
Do you find this useful?
Email us your feedback. What else would you like to see?
Top of Page
|
|