Difference between revisions of "Chieftain Mk 10"

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{{Specs-Card|code=uk_chieftain_mk_10}}
 
{{Specs-Card|code=uk_chieftain_mk_10}}
{{Notice|''This page is about the medium tank '''{{PAGENAME}}'''. For other uses, see [[Chieftain (Disambiguation)]]''}}
+
{{About
 +
| about = British medium tank '''{{PAGENAME}}'''
 +
| usage = other uses
 +
| link = Chieftain (Family)
 +
}}
  
 
== Description ==
 
== Description ==
<!--''In the description, the first part needs to be about the history of the creation and combat usage of the vehicle, as well as its key features. In the second part, tell the reader about the ground vehicle in the game. Insert the screenshot of the vehicle. If the novice player does not remember the vehicle by name, they will immediately understand what kind of vehicle it is talking about.''-->
+
<!-- ''In the description, the first part should be about the history of the creation and combat usage of the vehicle, as well as its key features. In the second part, tell the reader about the ground vehicle in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
[[File:GarageImage_Chieftain_Mk_10.jpg|420px|thumb|left]]
+
[[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left]]
{{break}}
+
{{Break}}
The '''{{specs|name}}''' is a Rank {{Specs|rank}} British medium tank {{Battle-rating}}. It was introduced in [[Update 1.71 "New E.R.A"]]..
+
The '''{{Specs|name}}''' is a rank {{Specs|rank}} British medium tank {{Battle-rating}}. It was introduced in [[Update 1.71 "New E.R.A."]].
 +
 
 +
The {{PAGENAME}} is the first vehicle in the British main research tree with APFSDS ammunition, significantly improving the vehicle's gun performance once the corresponding module researched.
  
 
== General info ==
 
== General info ==
 
=== Survivability and armour ===
 
=== Survivability and armour ===
<!--''Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat?''
+
<!-- ''Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat? If necessary use a visual template to indicate the most secure and weak zones of the armour.'' -->
 
 
''If necessary use a visual template to indicate the most secure and weak zones of the armour.''-->
 
Armour is identical to the earlier Chieftain variants, but with the addition of Stillbrew composite armor over the turret front and turret ring. Stillbrew covers a majority of a hull-down Chieftain's frontal projection, but certain areas are not covered. Weak points include the area directly around the gun breach and a sliver of the turret ring between the hull and turret composite packages.
 
 
 
Due to the very thick, highly angled armor package, Stillbrew-protected areas are very resistant to KE projectiles up until top-tier longrod APFSDS (e.g. DM33, 3BM42, etc.). The simple composition of Stillbrew means it isn't as efficient against CE threats, but it retains a somewhat respectable CE protection of around 500 mm,
 
  
'''Armour types:'''
+
'''Armour type:'''
  
* Stillbrew composite armour (turret front, turret ring)
+
* Cast homogeneous armour (hull front, turret front half, cupola)
* Cast homogeneous armour (hull front, turret)
+
* Rolled homogeneous armour (hull sides, hull rear, hull roof, turret rear half, turret roof, cupola roof)
* Rolled homogeneous armour (hull sides, hull rear, hull roof, turret roof)
+
* Stillbrew composite armour (turret front half, turret ring - front part)
* Aluminium (side skirts)
 
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 32: Line 32:
 
| Turret || 125-250 + 80-150* mm (2-81°) Turret front 100-220 mm (1-53°) Gun mantlet || 45-196 mm (1-65°) || 45 mm (1°) || 50.8 mm ''Front'' <br> 25 mm ''Rear''
 
| Turret || 125-250 + 80-150* mm (2-81°) Turret front 100-220 mm (1-53°) Gun mantlet || 45-196 mm (1-65°) || 45 mm (1°) || 50.8 mm ''Front'' <br> 25 mm ''Rear''
 
|-
 
|-
! Armour !! Sides !! Roof
+
| Cupola || colspan="3" style="text-align:center" | 150 mm || 25 mm
 
|-
 
|-
| Cupola || 150 mm || 25 mm
+
|}
 +
'''Notes:'''
 +
* Suspension wheels and tracks are 20 mm thick while bogies are 19 mm thick.
 +
* Belly armour is 16 mm of RHA.
 +
 
 +
{| class="wikitable"
 
|-
 
|-
! Composite armour* !! Front !! Sides !! Rear !! Roof
+
! Stillbrew armour !! Front
 
|-
 
|-
| Hull || '''Turret ring:'''<br> 200 mm ''Kinetic'' <br> 200 mm ''Chemical'' || N/A || N/A || N/A
+
| Turret ring - front part || 200 mm ''Kinetic'' <br> 200 mm ''Chemical''
 
|-
 
|-
| Turret || '''Turret front:'''<br>450 mm ''Kinetic'' <br> 500 mm ''Chemical''<br> || N/A || N/A || N/A
+
| Turret - front half || 450 mm ''Kinetic'' <br> 500 mm ''Chemical''
 
|-
 
|-
 
|}
 
|}
 
'''Notes:'''
 
'''Notes:'''
 +
* Stillbrew armour at turret ring is pure 200 mm CHA.
 +
* Stillbrew armour on turret front is composed of 80 to 150 mm CHA + 60 mm rubber + 150 to 250 mm CHA.
  
* Suspension wheels and tracks are 20 mm thick.
+
The {{PAGENAME}} sports identical hull armour to the earlier variants, however the turret is augmented with Stillbrew composite armour, providing near-complete frontal protection when in hull-down positioning, with the exceptions of the small area around the gun breech and a small section of visible turret ring. The Chieftain's Stillbrew package offers extremely effective protection against most kinetic rounds, with only rounds available on vehicles such as the T-80B and Type 90 able to penetrate it.
* Belly armour is 16 mm of RHA.
+
 
* Stillbrew armour at turret ring is pure 200 mm CHA.
+
The vehicle's hull armour should be considered essentially non-existent relative to the weaponry it faces; in most cases a hull shot will result in penetration.
* Stillbrew armour on turret front is composed of (80 to 150 mm CHA) + (60 mm rubber) + (150 to 250 mm CHA).
 
  
 
=== Mobility ===
 
=== Mobility ===
<!--''Write about the mobility of the ground vehicle. Estimate the specific power and maneuverability as well as the maximum speed forward and backward.''-->
+
<!-- ''Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability, as well as the maximum speed forwards and backwards.'' -->
{| class="wikitable" style="text-align:center"
+
 
|-
+
{{tankMobility|abMinHp=1,178|rbMinHp=672}}
! colspan="3" | Mobility characteristic
+
 
|-
+
The {{PAGENAME}}'s mobility is extremely sub-par, particularly when considering the vehicles it will face regularly - such as the [[Leopard A1A1]] or the [[AMX-30 Super]]. While the vehicle is ''technically'' capable of a maximum of 48 km/h in RB/SB, the lacklustre power and the {{PAGENAME}}'s significant weight result in this speed being essentially unattainable except in on-road downhills.
! Weight (tons)
+
 
! colspan="1" | Add-on Armor<br>weight (tons)
+
As such, {{PAGENAME}} players should not rely on their mobility for anything; rather they should make their way to positions with good visibility and attempt to maintain ranged engagements only, relying on their turret armour.
! colspan="1" | Max speed (km/h)
+
 
|-
 
| rowspan="2" | 57.2 || colspan="1" rowspan="2" | N/A || colspan="1" | 53 (AB)
 
|-
 
|48 (RB/SB)
 
|-
 
! colspan="3" | Engine power (horsepower)
 
|-
 
! colspan="1" | Mode
 
!Stock
 
!Upgraded
 
|-
 
|''Arcade''
 
|1,178
 
|???
 
|-
 
|''Realistic/Simulator''
 
|672
 
|???
 
|-
 
! colspan="3" | Power-to-weight ratio (hp/ton)
 
|-
 
! colspan="1" | Mode
 
!Stock
 
!Upgraded
 
|-
 
|''Arcade''
 
|20.59
 
|???
 
|-
 
|''Realistic/Simulator''
 
|11.75
 
|???
 
|-
 
|}
 
 
== Armaments ==
 
== Armaments ==
 
=== Main armament ===
 
=== Main armament ===
<!--''Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: <code><nowiki>{{main|Name of the weapon}}</nowiki></code>. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.''-->
+
<!-- ''Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: <code><nowiki>{{main|Name of the weapon}}</nowiki></code>. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.'' -->
 
{{main|Ordnance BL Tk. L11 (120 mm)}}
 
{{main|Ordnance BL Tk. L11 (120 mm)}}
  
{| class="wikitable" style="text-align:center"
+
The L11 120 mm Rifled Cannon is reasonably competitive at the Chieftain's rank, although it does suffer from a somewhat mediocre reload time. The weapon is extremely accurate, particularly once utilising the L23 APFSDS round, and performs admirably in ranged engagements. The weapon's default APDS and HESH rounds can be used to good effect against most targets, given careful aim and target selection.
|-
+
 
! colspan="6" | [[Ordnance BL Tk. L11 (120 mm)|120 mm L11]]
+
{| class="wikitable" style="text-align:center" width="100%"
|-
 
! colspan="3" rowspan="1" style="width:5em" |Capacity
 
! rowspan="1" | Vertical <br> guidance
 
! rowspan="1" | Horizontal <br> guidance
 
! rowspan="1" | Stabilizer
 
|-
 
| colspan="3" | 53 || -10°/+20° || ±180° || Two-plane
 
|-
 
! colspan="6" | Turret rotation speed (°/s)
 
 
|-
 
|-
! style="width:4em" |Mode
+
! colspan="5" | [[Ordnance BL Tk. L11 (120 mm)|120 mm Ordnance BL Tk. L11]] || colspan="5" | Turret rotation speed (°/s) || colspan="4" | Reloading rate (seconds)
! style="width:4em" |Stock
 
! style="width:4em" |Upgraded
 
! style="width:4em" |Prior + Full crew
 
! style="width:4em" |Prior + Expert qualif.
 
! style="width:4em" |Prior + Ace qualif.
 
 
|-
 
|-
| ''Arcade'' || 21.4 || _.__ || _.__ || _.__ || _.__
+
! Mode !! Capacity !! Vertical !! Horizontal !! Stabilizer
 +
! Stock !! Upgraded !! Full !! Expert !! Aced
 +
! Stock !! Full !! Expert !! Aced
 
|-
 
|-
| ''Realistic'' || 13.4 || _.__ || _.__ || _.__ || _.__
+
! ''Arcade''
 +
| rowspan="2" | 53 || rowspan="2" | -10°/+20° || rowspan="2" | ±180° || rowspan="2" | Two-plane || 21.4 || 29.6 || 36.0 || 39.8 || 42.4 || rowspan="2" | 9.7 || rowspan="2" | 8.6 || rowspan="2" | 7.9 || rowspan="2" | 7.5
 
|-
 
|-
! colspan="4" | Reloading rate (seconds)
+
! ''Realistic''
|-
+
| 13.4 || 15.8 || 19.1 || 21.1 || 22.5
! colspan="1" style="width:4em" |Stock
 
! colspan="1" style="width:4em" |Prior + Full crew
 
! colspan="1" style="width:4em" |Prior + Expert qualif.
 
! colspan="1" style="width:4em" |Prior + Ace qualif.
 
|-
 
| 9.70 || _.__ || _.__ || _.__
 
 
|-
 
|-
 
|}
 
|}
  
===== Ammunition =====
+
==== Ammunition ====
 +
The available ammunition allows for engaging all types of targets:
 +
 
 +
* '''L15A3''': APDS; an armour-piercing round with a discarding sabot that has a good penetration power and no explosive filler. As it lacks post-penetration damage, the tactic with an APDS shot is to either knock out the majority of the tank's crew or to provoke ammo or fuel detonation by targeting their respective locations. This requires good knowledge of the layouts of potential opposing vehicles. Use the Protection analysis feature in the hangar menu to analyse potential foes for their weak spots! Also, keep in mind that with increased armour thickness the number of shrapnel shrinks.
 +
 
 +
* '''L31A7''': HESH; a high-explosive squash head projectile works very differently from other shell types. It ignores any angle, except for ricochet, and deals damage by metal-flakes which are blown off inside the armour by the exterior explosion. To create this deadly shrapnel inside the tank, make sure to only hit armour plates which are a direct part of the interior crew compartment of the tank. Hitting exterior parts of a tank like spaced armour, the suspension, tracks etc. will not harm crew members/modules at all. Currently, only true armour thickness (as opposed to the line of sight thickness) will provide sufficient means of protection, benefiting the USSR turret designs and in general German tanks. Like all high-explosive shells, the fuse is very sensitive and can be set-off by most objects e.g. fences, trees, posts. The slow muzzle velocity of this shell can make it quite hard to hit targets at longer distances, but at the same time it can be handy because its arc trajectory allows it to land hits on enemies hiding behind shallow hills.
 +
 
 +
* '''L23''': APFSDS; a kinetic dart with high penetration power capable of easily penetrating the majority of the foes it meets but without explosive filler. As it lacks post-penetration damage, the tactic with an APDS shot is to either knock out the majority of the tank's crew or to provoke ammo or fuel detonation by targeting their respective locations. This requires good knowledge of the layouts of potential opposing vehicles. Use the Protection analysis feature in the hangar menu to analyse potential foes for their weak spots! Also, keep in mind that with increased armour thickness the number of shrapnel shrinks.
 +
 
 +
* '''L34''': Smoke; useful to blind enemy vehicles that are too remote for you to disable so that you can progress towards objectives.
 +
 
 
{| class="wikitable sortable" style="text-align:center" width="100%"
 
{| class="wikitable sortable" style="text-align:center" width="100%"
 
! colspan="8" | Penetration statistics
 
! colspan="8" | Penetration statistics
 
|-
 
|-
 
! rowspan="2" data-sort-type="text" | Ammunition
 
! rowspan="2" data-sort-type="text" | Ammunition
! rowspan="2" class="unsortable" | Type of <br /> warhead
+
! rowspan="2" | Type of<br>warhead
! colspan="6" | '''Penetration''' '''''in mm''''' '''@ 90°'''
+
! colspan="6" | '''Penetration @ 0° Angle of Attack (mm)'''
 
|-
 
|-
! 10m
+
! 10 m !! 100 m !! 500 m !! 1,000 m !! 1,500 m !! 2,000 m
! 100m
 
! 500m
 
! 1000m
 
! 1500m
 
! 2000m
 
 
|-
 
|-
 
| Shot L15A3 || APDS || 320 || 315 || 305 || 294 || 280 || 270
 
| Shot L15A3 || APDS || 320 || 315 || 305 || 294 || 280 || 270
 +
|-
 +
| Shell L31A7 || HESH || 152 || 152 || 152 || 152 || 152 || 152
 
|-
 
|-
 
| Shot L23 || APFSDS || 410 || 408 || 405 || 400 || 390 || 380
 
| Shot L23 || APFSDS || 410 || 408 || 405 || 400 || 390 || 380
|-
 
| Shell L31A7 || HESH || 152 || 152 || 152 || 152 || 152 || 152
 
 
|-
 
|-
 
|}
 
|}
 
{| class="wikitable sortable" style="text-align:center" width="100%"
 
{| class="wikitable sortable" style="text-align:center" width="100%"
! colspan="11" | Shell details
+
! colspan="10" | Shell details
 
|-
 
|-
 
! rowspan="2" data-sort-type="text" | Ammunition
 
! rowspan="2" data-sort-type="text" | Ammunition
! rowspan="2" class="unsortable" | Type of <br /> warhead
+
! rowspan="2" | Type of<br>warhead
! rowspan="2" |Velocity <br /> in m/s
+
! rowspan="2" | Velocity<br>(m/s)
! rowspan="2" |Projectile<br />Mass in kg
+
! rowspan="2" | Projectile<br>Mass (kg)
! rowspan="2" | ''Fuse delay''
+
! rowspan="2" | Fuse delay<br>(m)
''in m:''
+
! rowspan="2" | Fuse sensitivity<br>(mm)
! rowspan="2" | ''Fuse sensitivity''
+
! rowspan="2" | Explosive Mass<br>(TNT equivalent) (g)
''in mm:''
+
! colspan="3" | Ricochet
! rowspan="2" | ''Explosive Mass in g<br /> (TNT equivalent):''
 
! rowspan="2" | ''Normalization At 30° <br> from horizontal:''
 
! colspan="3" | ''Ricochet:''
 
 
|-
 
|-
! 0%
+
! 0% !! 50% !! 100%
! 50%
 
! 100%
 
 
|-
 
|-
| Shot L15A3 || APDS || 1370 || 7.6 || N/A || N/A || N/A || +1.5° || 75° || 78° || 80°
+
| Shot L15A3 || APDS || 1,370 || 7.6 || N/A || N/A || N/A || 75° || 78° || 80°
 
|-
 
|-
| Shot L23 || APFSDS || 1535 || 3.89 || N/A || N/A || N/A || +1.5° || 76° || 77° || 78°
+
| Shell L31A7 || HESH || 670 || 17.1 || 0.4 || 0.1 || 6,560 || 73° || 77° || 80°
 
|-
 
|-
| Shell L31A7 || HESH || 670 || 17 || 0.4 || 0.1 || 4,100 || +0° || 73° || 77° || 80°
+
| Shot L23 || APFSDS || 1,535 || 3.89 || N/A || N/A || N/A || 76° || 77° || 80°
 
|-
 
|-
 
|}
 
|}
{| class="wikitable sortable" style="text-align:center"
+
{| class="wikitable" style="text-align:center"
! colspan="7" | Smoke characteristic
+
! colspan="7" | Smoke shell characteristics
 
|-
 
|-
 
! Ammunition
 
! Ammunition
! Velocity <br /> in m/s
+
! Velocity<br>(m/s)
! Projectile<br />Mass in kg
+
! Projectile<br>Mass (kg)
! ''Screen radius <br /> in m''
+
! Screen radius<br>(m)
! ''Screen time <br /> in s''
+
! Screen deploy time<br>(s)
! ''Screen hold time <br /> in s:''
+
! Screen hold time<br>(s)
! ''Explosive Mass in g<br /> (TNT equivalent):''
+
! Explosive Mass<br>(TNT equivalent) (g)
 
|-
 
|-
| L34 || 670 || 17.0 || 20 || 5 || 25 || 50  
+
| L34 || 670 || 17.1 || 20 || 5 || 25 || 50
 
|-
 
|-
 
|}
 
|}
  
===== [[Ammo racks|Ammo racks]] =====
+
==== [[Ammo racks]] ====
<!--[[File:Ammoracks_ChieftainMk10.png|right|thumbnail|x250px|Ammo racks of the Chieftain Mk.10.]]-->
+
<!-- [[File:Ammoracks_{{PAGENAME}}.png|right|thumb|x250px|[[Ammo racks]] of the {{PAGENAME}}]] -->
{| class="wikitable sortable" style="text-align:center"
+
{| class="wikitable" style="text-align:center"
 
|-
 
|-
! class="wikitable unsortable" |Full<br />ammo
+
! Full<br>ammo
! class="wikitable unsortable" |1st<br />rack empty
+
! 1st<br>rack empty
! class="wikitable unsortable" |2nd<br />rack empty
+
! 2nd<br>rack empty
! class="wikitable unsortable" |Visual<br /> discrepancy
+
! 3rd<br>rack empty
 +
! 4th<br>rack empty
 +
! 5th<br>rack empty
 +
! 6th<br>rack empty
 +
! Visual<br>discrepancy
 
|-
 
|-
| '''53''' || &nbsp;''(+)''|| &nbsp;''(+)'' || style="text-align:center" | No
+
| '''53''' || __&nbsp;''(+__)'' || __&nbsp;''(+__)'' || __&nbsp;''(+__)'' || __&nbsp;''(+__)'' || __&nbsp;''(+__)'' || __&nbsp;''(+__)'' || __
 
|-
 
|-
 
|}
 
|}
  
<!--=== Additional armament ===
+
==== Optics and night vision ====
''Some tanks are armed with several guns in one or more turrets. Evaluate the additional weaponry and give advice on its use. Describe the ammunition available for additional weaponry. Give advice on how to use them and how to fill the ammunition storage. If there is no additional weaponry remove this subsection.''-->
+
The magnification of the gunner's optics on the {{PAGENAME}} is ok, but not anything special compared to other tanks it faces. There is only a minimal difference between the default magnification and the zoomed in magnification.
=== Machine guns ===
+
 
<!--''Offensive and anti-aircraft machine guns not only allow you to fight some aircraft, but also are effective against lightly armoured vehicles. Evaluate machine guns and give recommendations on its use.''-->
+
The Chieftain is equipped with a fairly basic night vision system, consisting of image intensifiers and an IR searchlight, there is no thermal imager. The image intensifiers are fairly standard compared to those fitted to vehicles of the same time period, they have a lower resolution and higher noise than those fitted to later vehicles.
{{main|L37A1 (7.62 mm)|L8A1 (7.62 mm)}}
 
  
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
 +
! colspan="7" | {{PAGENAME}} [[Optics]]
 
|-
 
|-
! colspan="7" | [[L37A1 (7.62 mm)|7.62 mm L37A1]]
+
! rowspan="3" |Type of optic
 +
! rowspan="3" |Magnification
 +
! colspan="5" |[[Night Vision Devices]]
 
|-
 
|-
! colspan="7" | ''Pintle mount''
+
! colspan="3" |Image Intensifier
 +
! rowspan="2" |{{Annotation|Thermal Imager<br>Resolution|The higher the resolution the clearer and more detailed the image is}}
 +
! rowspan="2" |Notes
 
|-
 
|-
! colspan="4" rowspan="1" style="width:5em" |Capacity (Belt capacity)
+
! {{Annotation|Resolution|The higher the resolution the clearer and more detailed the image is}}
! rowspan="1" | Fire rate <br> (shots/minute)
+
! {{Annotation|Light Mult|By how much the image intensifier amplifies the existing light, primarily useful for comparing image intensifiers}}
! rowspan="1" | Vertical <br> guidance
+
! {{Annotation|Noise Level|How much noise is present in the image (how grainy the image is)}}
! rowspan="1" | Horizontal <br> guidance
 
 
|-
 
|-
| colspan="4" | 2,000 (100) || 650 || -10°/+50° || ±120°
+
! Gunner's Sight
 +
| X7.25 - X8 || 800 x 600 || 8.0 || High || Not Fitted || Image intensifier unlocked by "NVD" mod (tier 3)
 +
|-
 +
! Commander's View
 +
| X6 || 800 x 600 || 8.0 || High || Not Fitted || Image intensifier unlocked by "NVD" mod (tier 3)
 +
|-
 +
! Driver's View
 +
| X1 || 800 x 600 || 5.0 || High || Not Fitted || Image intensifier unlocked by "NVD" mod (tier 3)
 
|-
 
|-
 
|}
 
|}
 +
 +
The IR searchlight on the {{PAGENAME}} is mounted in a distinctive box on the left hand side of the turret, it has a wide beam compared to other searchlights; however due to its placement some of the turret blocks some of the light which would otherwise go to the right. In practice this slightly narrows the beam, compared to the theoretical angle listed below (it is still much wider than other searchlights though).
 +
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
 +
! colspan="3" | {{PAGENAME}} [[Night_Vision_Devices#Infrared_Spotlights|IR Searchlight]]
 +
|-
 +
! Max Range
 +
! Beam Width
 +
! Location / Notes
 +
|-
 +
| 1,500 m || 15.3° || Searchlight mounted in box on left hand side of turret, does not pitch up or down.
 +
|-
 +
|}
 +
 +
=== Machine guns ===
 +
<!--Offensive and anti-aircraft machine guns not only allow you to fight some aircraft but also are effective against lightly armoured vehicles. Evaluate machine guns and give recommendations on its use.-->
 +
{{main|L37A1 (7.62 mm)|L8A1 (7.62 mm)}}
 +
 +
The small caliber of the 7.62 machine gun makes them largely ineffective against all armoured vehicles but the ones with an open compartment or to destroy incoming ATGMs, with a bit of luck.
 +
 +
{| class="wikitable" style="text-align:center" width="50%"
 +
|-
 +
! colspan="5" | [[L37A1 (7.62 mm)|7.62 mm L37A1]]
 +
|-
 +
! Mount !! Capacity (Belt) !! Fire rate !! Vertical !! Horizontal
 +
|-
 +
| Pintle || 2,000 (100) || 650 || -10°/+50° || ±120°
 
|-
 
|-
! colspan="7" | [[L8A1 (7.62 mm)|7.62 mm L8A1]]
+
|}
 +
{| class="wikitable" style="text-align:center" width="50%"
 
|-
 
|-
! colspan="7" | ''Coaxial mount''
+
! colspan="5" | [[L8A1 (7.62 mm)|7.62 mm L8A1]]
 
|-
 
|-
! colspan="4" rowspan="1" style="width:5em" |Capacity (Belt capacity)
+
! Mount !! Capacity (Belt) !! Fire rate !! Vertical !! Horizontal
! rowspan="1" | Fire rate <br> (shots/minute)
 
! rowspan="1" | Vertical <br> guidance
 
! rowspan="1" | Horizontal <br> guidance
 
 
|-
 
|-
| colspan="4" | 6,000 (200) || 600 || N/A || N/A
+
| Coaxial || 6,000 (200) || 600 || N/A || N/A
 
|-
 
|-
 
|}
 
|}
  
 
== Usage in battles ==
 
== Usage in battles ==
''Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).''
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<!-- ''Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but instead give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).'' -->
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The {{PAGENAME}} plays similarly to the Mk 3/Mk 5 - ideally taking long-ranged engagements from hull-down positions, or when forced into shorter-ranged engagements avoiding exposing the vehicle as much as possible. Fortunately, the Stillbrew addition on the Mk.10 significantly reduces the risks of exposing the turret, with the composite capable of deflecting most kinetic rounds it will face - although the armour package is not invulnerable to chemical rounds; some powerful HEAT rounds and most late ATGMs will easily punch through it. Augmenting the vehicle's ability further is the (researchable) access to L23 APFSDS, which significantly improves the L11's long range efficacy. Despite these improvements, the Chieftain still suffers from mediocre mobility and care must be taken to ensure one does not get engaged while the vehicle is moving, as the ability to quickly move into cover is often not an option.
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 +
'''Specific Adversaries'''
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 +
'''[[T-64B]]/[[T-80B]]:''' The Chieftain is susceptible to the T-64B and T-80B at close to medium ranges, where their highest-performance APFSDS rounds or their ATGMs are capable of punching through the Stillbrew armour. As such, when forced to engage either of these vehicles try to force mistakes by staying in cover, encouraging them to move within your firing line rather than attempting to brute-force your way through them.
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 +
'''[[Leopard 2K]]:''' The Leopard 2K is a dangerous adversary due to its speed and ability to move quickly and potentially flank the Chieftain Mk.10. The Leopard ''is'' however fairly easy to destroy due to its essentially non-existent armour - although don't underestimate the ability for the sharp angles to bounce rounds.
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 +
'''[[AMX-40]]:''' The AMX-40 is a threat to the Chieftain Mk.10 for similar reasons to the Leopard 2K; as with the Leopard, be wary of flanks and the power of the AMX-40's APFSDS.
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=== Modules ===
 +
{| class="wikitable"
 +
! Tier
 +
! colspan="2" | Mobility
 +
! Protection
 +
! colspan="3" | Firepower
 +
|-
 +
| I
 +
| Tracks
 +
|
 +
| Parts
 +
| Horizontal Drive
 +
|
 +
|
 +
|-
 +
| II
 +
| Suspension
 +
| Brake System
 +
| FPE
 +
| Adjustment of Fire
 +
| NVD
 +
|
 +
|-
 +
| III
 +
| Filters
 +
|
 +
| Crew Replenishment
 +
| Elevation Mechanism
 +
| Shot L23
 +
| Smoke grenade
 +
|-
 +
| IV
 +
| Transmission
 +
| Engine
 +
|
 +
| L34
 +
| Laser rangefinder
 +
| Artillery Support
 +
|-
 +
|}
  
 
=== Pros and cons ===
 
=== Pros and cons ===
<!--''Summarize and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in a bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - they have a substitution in the form of softer "inadequate", "effective".''-->
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<!-- ''Summarise and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in a bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - use substitutions with softer forms such as "inadequate" and "effective".'' -->
  
 
'''Pros:'''
 
'''Pros:'''
  
* Stillbrew composite turret armor (protection: 450mm against kinetic rounds and 500mm against chemical rounds).
+
* Stillbrew composite armour makes a hull-down Chieftain essentially impervious to all but the best kinetic rounds. It is also resistant to most rank VI chemical rounds and early generation ATGMs. Due to this, the tank is a nightmare to fight with outdated tanks for many nations, as not many tanks can even scratch its turret directly to begin with
* Shot L23 APFSDS Capable of penetrating 408mm of steel @ 100m @90°
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* The L23 APFSDS round is very powerful and will have little trouble penetrating most vehicles at the Chieftain's rank
* Decent gun depression
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* 10° of gun depression
* Peforms very well in a hull down position
+
* Reasonably fast reload time for a 120mm with a base time of 9.5s and a best time of 7.5s
 +
* Reasonable reverse speed
 +
* Receives a Laser Rangefinder as a Tier 4 modification, the first British vehicle this is available on
  
 
'''Cons:'''
 
'''Cons:'''
  
* Bad mobility.
+
* Stillbrew composite armour does not provide particularly good chemical protection against upgraded rank VI ATGM, which means, that while it can often allow {{PAGENAME}} to ignore ATGM attacks from tanks like [[Begleitpanzer 57]], [[KPz-70]] or [[M551]] and maybe even some attacks from unskilled [[IT-1]] operator, in up-tier or against specialized rank VI ATGM tanks and tanks, which can carry advanced ATGM ( like [[BMP-1]], [[BMP-1 (DDR)]], [[BMP-2]], [[Type 89]], [[Warrior]], Etc.), the tank commander must be much more cautious
* Upper and lower frontal plates are weak due to the lack of Stillbrew armor.
+
* While turret is near invulnerable to shells with poor flight characteristics, it still retains a glaring weakspot in form of cupola, which can be penetrated and obliterated by almost any APHE, sometimes even from light tanks such as [[Begleitpanzer 57]], resulting in full crew knockout. Because of this, the {{PAGENAME}} is usually forced to keep their enemies away, even when going to the frontline
* Ammo-racks everywhere.
+
* Very poor mobility characteristics, much slower than most medium tanks it have to face
 +
* Hull armour is negligible, comprised only of Cast Homogenous armour, which means that it is even weaker, than what it looks like
 +
* Hull penetration will often result in ammunition detonation as ammo is strewn throughout it
  
 
== History ==
 
== History ==
<!--''Describe the history of the creation and combat usage of the ground vehicle in more detail than in the introduction. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></nowiki></code>, as well as adding them at the end of the article.''-->
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<!-- ''Describe the history of the creation and combat usage of the vehicle in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under <code><nowiki>=== In-game description ===</nowiki></code>, also if applicable).'' -->
 
===Concept===
 
===Concept===
The idea of a "universal tank" began in Britain in 1944 when Montgomery and other influential people began advocating for more standardized tank to replace the cruiser and infantry tank classes used on the field. Efforts did not start until after World War II under the General Staff designation A45, with development starting just as the new cruiser tank [[Centurion Mk 3|Centurion]] started to enter military service. The A45 was cancelled in 1948 after development troubles and its inability to be used as a "universal" platform. Ironically, the Centurion proved to be a better "universal tank" platform than the A45.<ref name="DunstanChieftain">Dunstan Simon. ''Chieftain Main Battle Tank 1965-2003'' Great Britain: Osprey Publishing Ltd., 2003</ref>
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The idea of a "universal tank" began in Britain in 1944 when Montgomery and other influential people began advocating for a more standardized tank to replace the cruiser and infantry tank classes used on the field. Efforts did not start until after World War II under the General Staff designation A45, with development starting just as the new cruiser tank [[Centurion Mk 3|Centurion]] started to enter military service. The A45 was cancelled in 1948 after development troubles and its inability to be used as a "universal" platform. Ironically, the Centurion proved to be a better "universal tank" platform than the A45.<ref name="DunstanChieftain">Dunstan Simon. ''Chieftain Main Battle Tank 1965-2003'' Great Britain: Osprey Publishing Ltd., 2003</ref>
  
 
===Development===
 
===Development===
The [[Centurion Mk 10|Centurion]] tank series was very successful in British and its allies' service, but development of new Soviet armour such as the [[IS-3]] and [[T-54 (1951)|T-54/55]] caused the British tank arms race to take another leap forward. Development on the Centurion's successor began in 1951 under the name ''Medium Gun Tank No. 2''. The project's priority was gun and armour, but with mobility to be equal to the Centurion's and a weight of less than 45 tons. The weight limit caused a program known as the Concept Study Programme to commence in order to find ways to keep the tank under that weight limit yet meet all the armour and firepower specifications. One of the concept that came out was the usage of bagged charges, which was already in use on naval ships, but was a new concept for tank ammunition. Thus, a gun using the bagged charge propellant system began development in 1954, along with a new specification by General Staff that the Medium Gun Tank No.2, now known as ''FV4201'', uses a conventional four crew tank with a turret and a better gun and armour than the Centurion. Though the [[Conqueror]] heavy tank was one such response to the firepower requirement, limited production cut that to only 200 units built.<ref name="DunstanChieftain">Dunstan Simon. ''Chieftain Main Battle Tank 1965-2003'' Great Britain: Osprey Publishing Ltd., 2003</ref>
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The [[Centurion Mk 10|Centurion]] tank series was very successful in British and its allies' service, but the development of new Soviet armour such as the [[IS-3]] and [[T-54 (1951)|T-54/55]] caused the British tank arms race to take another leap forward. Development on the Centurion's successor began in 1951 under the name ''Medium Gun Tank No. 2''. The project's priority was gun and armour, but with mobility to be equal to the Centurion's and weight of fewer than 45 tons. The weight limit caused a program known as the Concept Study Programme to commence in order to find ways to keep the tank under that weight limit yet meet all the armour and firepower specifications. One of the concepts that came out was the usage of bagged charges, which was already in use on naval ships but was a new concept for tank ammunition. Thus, a gun using the bagged charge propellant system began development in 1954, along with a new specification by General Staff that the Medium Gun Tank No.2, now known as ''FV4201'', uses a conventional four crew tank with a turret and a better gun and armour than the Centurion. Though the [[Conqueror]] heavy tank was one such response to the firepower requirement, limited production cut that to only 200 units built.<ref name="DunstanChieftain">Dunstan Simon. ''Chieftain Main Battle Tank 1965-2003'' Great Britain: Osprey Publishing Ltd., 2003</ref>
  
The biggest bump to the firepower of the FV4201 was the recommendation of a 120 mm caliber tank cannon. Though the Conqueror used a 120 mm, the new one would incorporate more innovative features such as the bagged charges. Other design features added was the usage of a Rolls-Royce V8 engine, an auxiliary engine, an automatic gearbox, and a reclining seat for the driver. The reclining seat was a very new feature in tank design as it reduced the vehicle's hull height and thus gave it a lower profile. Leyland Motors was assigned to be the main designer for the tank despite their commitment to the Centurion production lines. The manufacturing process of the tank was decided to be cast rather than welded. In 1957, several specifications added to the FV4201 impeded its attempt to fit in the specifications. A bigger turret was designed and it mounted IR equipment for night fighting. Troops requested more frontal and turret side armour, which along with the turret change caused an increase in the tank's overall weight. A controversial decision was also made in 1957 by NATO that tanks should have multi-fuel engines. The FV4201 installed a new engine conforming to these standards in 1958, a German engine derived from a Junkers Jumo aviation engine. This extended development time since the engine compartment had to be redesigned to fit the engine, raising the total tank weight to 50 tons. The engine, designated the L60, was received with mixed reception by the Royal Armoured Corps (RAC) and other users due to its novel features. Britain stayed as the only user of a multi-fuel engine in the Cold War as many other nations found the concept impractical and abandoned it.<ref name="DunstanChieftain">Dunstan Simon. ''Chieftain Main Battle Tank 1965-2003'' Great Britain: Osprey Publishing Ltd., 2003</ref>
+
The biggest bump to the firepower of the FV4201 was the recommendation of a 120 mm calibre tank cannon. Though the Conqueror used a 120 mm, the new one would incorporate more innovative features such as the bagged charges. Other design features added was the usage of a Rolls-Royce V8 engine, an auxiliary engine, an automatic gearbox, and a reclining seat for the driver. The reclining seat was a very new feature in tank design as it reduced the vehicle's hull height and thus gave it a lower profile. Leyland Motors was assigned to be the main designer for the tank despite their commitment to the Centurion production lines. The manufacturing process of the tank was decided to be cast rather than welded. In 1957, several specifications added to the FV4201 impeded its attempt to fit in the specifications. A bigger turret was designed and it mounted IR equipment for night fighting. Troops requested more frontal and turret side armour, which along with the turret change caused an increase in the tank's overall weight. A controversial decision was also made in 1957 by NATO that tanks should have multi-fuel engines. The FV4201 installed a new engine conforming to these standards in 1958, a German engine derived from a Junkers Jumo aviation engine. This extended development time since the engine compartment had to be redesigned to fit the engine, raising the total tank weight to 50 tons. The engine, designated the L60, was received with a mixed reception by the Royal Armoured Corps (RAC) and other users due to its novel features. Britain stayed as the only user of a multi-fuel engine in the Cold War as many other nations found the concept impractical and abandoned it.<ref name="DunstanChieftain">Dunstan Simon. ''Chieftain Main Battle Tank 1965-2003'' Great Britain: Osprey Publishing Ltd., 2003</ref>
  
As the FV4201 finalized its prototype stages, General Staff sent a revised specification for it. The tank was to have the firepower of the Conqueror with the mobility of the Centurion, an armour that maximizes the protection-weight ratio, a weight limit at 45 ton with a top speed of 26 mph and an operating range of 300 miles. The first wooden prototype was made in March 1959, with full prototypes ordered in June 1959 for troop trials. Vickers-Armstrong and Royal Ordnance Factory shared the manufacturing process and the first prototypes were built in January 1960. The first two prototype FV4201 was trialed in Germany alongside their new [[Leopard I|Leopard 1]]. The greatest issue with the FV4201 was the engine, which caused many failures due to vibration, a result of the flawed multi-fuel concept. Trials were delayed due to lack of parts to fix broken pieces and redesigns were requested to fix problems. After a lengthy trial period in 1962, the FV4201, now named the '''Chieftain''', was sent to the operational unit in Germany for service and combat trials. The Chieftain was finally accepted for service in 1st May 1963, despite the many faults in the design. The first deliveries of the improved and redesigned Chieftains began in mid-1965. These were the ''Chieftain Mk 1's'', which further revealed problems with the horsepower that the ''Mk 2'' was designed and sent in April 1966. The ''[[Chieftain Mk 3]]'' rolled out of the production lines in September 1969, it now weighed 53 tons and the L60 engine was producing 650 hp, still underpowered for the weight. Engine failures were still frequent and left the Chieftain with a sour note until the [[Chieftain Mk 5|Mk 5]] variant fixed these pressing issues with a new engine and NBC protection. The Mk 5 would be the main variant of the Chieftain in British service. During its production life from 1965 to 1985, a total of 2,265 Chieftains would be built by Britain, with about 1,000 used by the British Army.<ref name="DunstanChieftain">Dunstan Simon. ''Chieftain Main Battle Tank 1965-2003'' Great Britain: Osprey Publishing Ltd., 2003</ref>
+
As the FV4201 finalized its prototype stages, General Staff sent a revised specification for it. The tank was to have the firepower of the Conqueror with the mobility of the Centurion, an armour that maximizes the protection-weight ratio, a weight limit at 45 ton with a top speed of 26 mph and an operating range of 300 miles. The first wooden prototype was made in March 1959, with full prototypes ordered in June 1959 for troop trials. Vickers-Armstrong and Royal Ordnance Factory shared the manufacturing process and the first prototypes were built in January 1960. The first two prototype FV4201 was trialled in Germany alongside their new [[Leopard I|Leopard 1]]. The greatest issue with the FV4201 was the engine, which caused many failures due to vibration, a result of the flawed multi-fuel concept. Trials were delayed due to lack of parts to fix broken pieces and redesigns were requested to fix problems. After a lengthy trial period in 1962, the FV4201, now named the '''Chieftain''', was sent to the operational unit in Germany for service and combat trials. The Chieftain was finally accepted for service in 1st May 1963, despite the many faults in the design. The first deliveries of the improved and redesigned Chieftains began in mid-1965. These were the ''Chieftain Mk 1's'', which further revealed problems with the horsepower that the ''Mk 2'' was designed and sent in April 1966. The ''[[Chieftain Mk 3]]'' rolled out of the production lines in September 1969, it now weighed 53 tons and the L60 engine was producing 650 hp, still underpowered for the weight. Engine failures were still frequent and left the Chieftain with a sour note until the [[Chieftain Mk 5|Mk 5]] variant fixed these pressing issues with a new engine and NBC protection. The Mk 5 would be the main variant of the Chieftain in British service. During its production life from 1965 to 1985, a total of 2,265 Chieftains would be built by Britain, with about 1,000 used by the British Army.<ref name="DunstanChieftain">Dunstan Simon. ''Chieftain Main Battle Tank 1965-2003'' Great Britain: Osprey Publishing Ltd., 2003</ref>
  
 
===Service===
 
===Service===
The first British units to receive the Chieftains was the 1st and 5th Royal Tank Regiments back during the trials. The Chieftain, despite its initial engine flaws, proved to be combat-proof and could be upgraded to fit new requirements. Some of these upgrades were the addition of composite add-on armour to fight off new anti-tank technology such as the HEAT rounds. The Chieftain earned the title "most formidable tank in the world" during the 1960's Cold War period and also redefined the specifications of a "main battle tank". Its success is due to its novel main gun and heavily sloped armour, as well as a satisfactory mobility and speed able to compete with the Leopard 1. The Chieftain stayed in use by the British Army On the Rhine on the German border with the Warsaw Pact, which caused the Soviets to in turn station their best tanks such as their [[T-64A (1971)|T-64's]] against the Chieftains. The British retained the Chieftains all the way until 1997, when it was replaced by the Challenger II, initially being used in addition to Challenger I.
+
The first British units to receive the Chieftains was the 1st and 5th Royal Tank Regiments back during the trials. The Chieftain, despite its initial engine flaws, proved to be combat-proof and could be upgraded to fit new requirements. Some of these upgrades were the addition of composite add-on armour to fight off new anti-tank technology such as the HEAT rounds. The Chieftain earned the title "most formidable tank in the world" during the 1960's Cold War period and also redefined the specifications of a "main battle tank". Its success is due to its novel main gun and heavily sloped armour, as well as satisfactory mobility and speeds able to compete with the Leopard 1. The Chieftain stayed in use by the British Army On the Rhine on the German border with the Warsaw Pact, which caused the Soviets to in turn station their best tanks such as their [[T-64A (1971)|T-64's]] against the Chieftains. The British retained the Chieftains all the way until 1997, when it was replaced by the Challenger II, initially being used in addition to Challenger I.
  
The Chieftain was also successful on the export market, primarily in the Middle East to the hands of Iran, Jordan, Kuwait, and Oman. Another user of the Chieftain was Israel, with Britain initially agreeing to help set up production for locally produced Chieftains. Two Chieftains were sent for trials among the Israeli Defense Force in 1967. After two years of trials and deliberation for the acquirement of the Chieftains, Britain ultimately refused to offer the Israelis the Chieftain for political reasons. The Israeli trials benefit Britain with data on desert combat with the Chieftain however, and the refusal did jump start Israel's tank program that would become the ''Merkava''.
+
The Chieftain was also successful in the export market, primarily in the Middle East to the hands of Iran, Jordan, Kuwait, and Oman. Another user of the Chieftain was Israel, with Britain initially agreeing to help set up production for locally produced Chieftains. Two Chieftains were sent for trials among the Israeli Defense Force in 1967. After two years of trials and deliberation for the acquirement of the Chieftains, Britain ultimately refused to offer the Israelis the Chieftain for political reasons. The Israeli trials benefit Britain with data on desert combat with the Chieftain, however, and the refusal did jump start Israel's tank program that would become the ''Merkava''.
  
 
Despite that, sales to the Middle East soared, with Iran being the major buyer of the Chieftains with at least 887 of mostly the MK3 and MK5 variants sent to them before their revolution in 1979. The Chieftain saw prolonged combat in the Middle East in the Iran-Iraq War, including Operation Nasr which was the largest tank vs. tank battle of the war where the Iranian Chieftains and [[M60A1 (AOS)|M60A1 Pattons]] fought against the Iraqi [[T-62]]s. After that war, the Chieftain in Kuwait then saw combat fighting the Iraqis during their invasion in 1990. Kuwait eventually replaced their Chieftains with the Yugoslavian M-84 tanks, which are a variant of the Soviet T-72s.
 
Despite that, sales to the Middle East soared, with Iran being the major buyer of the Chieftains with at least 887 of mostly the MK3 and MK5 variants sent to them before their revolution in 1979. The Chieftain saw prolonged combat in the Middle East in the Iran-Iraq War, including Operation Nasr which was the largest tank vs. tank battle of the war where the Iranian Chieftains and [[M60A1 (AOS)|M60A1 Pattons]] fought against the Iraqi [[T-62]]s. After that war, the Chieftain in Kuwait then saw combat fighting the Iraqis during their invasion in 1990. Kuwait eventually replaced their Chieftains with the Yugoslavian M-84 tanks, which are a variant of the Soviet T-72s.
  
The Chieftain is still in service Iran, Jordan, and Oman in varying numbers, about 100 in Iran, 350 in Jordan, and 27 in Oman. The Chieftains underwent local upgrades to keep them up to date against modern threat, which resulted in the Iran ''Mobarez'' Chieftain upgrade.
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The Chieftain is still in service Iran, Jordan, and Oman in varying numbers, about 100 in Iran, 350 in Jordan, and 27 in Oman. The Chieftains underwent local upgrades to keep them up to date against a modern threat, which resulted in the Iran ''Mobarez'' Chieftain upgrade.
  
 
===Legacy===
 
===Legacy===
Line 288: Line 335:
  
 
== Media ==
 
== Media ==
''An excellent addition to the article will be video guides, as well as screenshots from the game and photos.''
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<!-- ''Excellent additions to the article would be video guides, screenshots from the game, and photos.'' -->
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;Skins
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* [https://live.warthunder.com/feed/camouflages/?vehicleCountry=britain&vehicleType=tank&vehicleClass=medium_tank&vehicle=uk_chieftain_mk_10 Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]
  
==References==
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;Videos
<references />
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{{Youtube-gallery|lAW5l2qvPZs|'''{{PAGENAME}}: Come at me Bro!!!''' - ''Napalmratte''|F9_TT9_uPEg|'''{{PAGENAME}} Tank Review''' - ''NUSensei''|D3OF9IvtHLk|'''Tank Chats #34: Chieftain''' - ''The Tank Museum''}}
  
 
== See also ==
 
== See also ==
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
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<!-- ''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
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* ''reference to the series of the vehicles;''
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* ''links to approximate analogues of other nations and research trees.'' -->
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;Vehicles equipped with the same chassis
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* [[Chieftain (Family)]]
  
* ''reference to the series of the vehicles;''
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;Other vehicles of similar configuration and role
* ''links to approximate analogues of other nations and research trees.''
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* [[M48 Super]]
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* [[T-55AM-1]]
  
 
== External links ==
 
== External links ==
<!--''Paste links to sources and external resources, such as:''
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<!-- ''Paste links to sources and external resources, such as:''
 
* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
* ''encyclopedia page on tank;''
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* ''encyclopedia page on the tank;''
* ''other literature.''-->
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* ''other literature.'' -->
[https://warthunder.com/en/news/4946-development-chieftain-mk-10-dressing-up-for-war-en [Devblog<nowiki>]</nowiki> Chieftain Mk.10: Dressing Up for War]
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 +
* [[wt:en/news/4946-development-chieftain-mk-10-dressing-up-for-war-en|[Devblog] Chieftain Mk.10: Dressing Up for War]]
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* [[wikipedia:Chieftain_(tank)|[Wikipedia] Chieftain (tank)]]
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* [[wikipedia:Stillbrew_armour|[Wikipedia] Stillbrew armour]]
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* [https://tanks-encyclopedia.com/coldwar/UK/chieftain.php <nowiki>[Tanks Encyclopedia]</nowiki> FV4201 Chieftain]
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* [https://www.militaryfactory.com/armor/detail.asp?armor_id=83 <nowiki>[Military Factory]</nowiki> Chieftain MBT]
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 +
=== References ===
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<references />
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{{Britain medium tanks}}

Revision as of 11:29, 9 September 2020

Rank VI USSR | Premium | Golden Eagles
Su-25K Pack
uk_chieftain_mk_10.png
Chieftain Mk 10
AB RB SB
9.0 9.0 9.0
Class:
Research:190 000 Specs-Card-Exp.png
Purchase:520 000 Specs-Card-Lion.png
Show in game
This page is about the British medium tank Chieftain Mk 10. For other uses, see Chieftain (Family).

Description

GarageImage Chieftain Mk 10.jpg


The Chieftain Mk 10 is a rank VI British medium tank with a battle rating of 9.0 (AB/RB/SB). It was introduced in Update 1.71 "New E.R.A.".

The Chieftain Mk 10 is the first vehicle in the British main research tree with APFSDS ammunition, significantly improving the vehicle's gun performance once the corresponding module researched.

General info

Survivability and armour

Armour type:

  • Cast homogeneous armour (hull front, turret front half, cupola)
  • Rolled homogeneous armour (hull sides, hull rear, hull roof, turret rear half, turret roof, cupola roof)
  • Stillbrew composite armour (turret front half, turret ring - front part)
Armour Front Sides Rear Roof
Hull 70-127 mm (40-79°) Front glacis
76.2 mm (40-45°) Lower glacis
200* mm (0-45°) Turret ring
88-220 (8-30°) + 13 mm Front Top
50 mm (1-31°) Center Top
37 mm (30°) + 13 mm Rear Top
37 (10°) + 13 mm Bottom
37 mm (1-7°) 13-28 mm
Turret 125-250 + 80-150* mm (2-81°) Turret front 100-220 mm (1-53°) Gun mantlet 45-196 mm (1-65°) 45 mm (1°) 50.8 mm Front
25 mm Rear
Cupola 150 mm 25 mm

Notes:

  • Suspension wheels and tracks are 20 mm thick while bogies are 19 mm thick.
  • Belly armour is 16 mm of RHA.
Stillbrew armour Front
Turret ring - front part 200 mm Kinetic
200 mm Chemical
Turret - front half 450 mm Kinetic
500 mm Chemical

Notes:

  • Stillbrew armour at turret ring is pure 200 mm CHA.
  • Stillbrew armour on turret front is composed of 80 to 150 mm CHA + 60 mm rubber + 150 to 250 mm CHA.

The Chieftain Mk 10 sports identical hull armour to the earlier variants, however the turret is augmented with Stillbrew composite armour, providing near-complete frontal protection when in hull-down positioning, with the exceptions of the small area around the gun breech and a small section of visible turret ring. The Chieftain's Stillbrew package offers extremely effective protection against most kinetic rounds, with only rounds available on vehicles such as the T-80B and Type 90 able to penetrate it.

The vehicle's hull armour should be considered essentially non-existent relative to the weaponry it faces; in most cases a hull shot will result in penetration.

Mobility

Game Mode Max Speed (km/h) Weight (tons) Engine power (horsepower) Power-to-weight ratio (hp/ton)
Forward Reverse Stock Upgraded Stock Upgraded
Arcade 54 13 57.2 1,178 1,450 20.59 25.35
Realistic 49 12 672 760 11.75 13.29

The Chieftain Mk 10's mobility is extremely sub-par, particularly when considering the vehicles it will face regularly - such as the Leopard A1A1 or the AMX-30 Super. While the vehicle is technically capable of a maximum of 48 km/h in RB/SB, the lacklustre power and the Chieftain Mk 10's significant weight result in this speed being essentially unattainable except in on-road downhills.

As such, Chieftain Mk 10 players should not rely on their mobility for anything; rather they should make their way to positions with good visibility and attempt to maintain ranged engagements only, relying on their turret armour.

Armaments

Main armament

The L11 120 mm Rifled Cannon is reasonably competitive at the Chieftain's rank, although it does suffer from a somewhat mediocre reload time. The weapon is extremely accurate, particularly once utilising the L23 APFSDS round, and performs admirably in ranged engagements. The weapon's default APDS and HESH rounds can be used to good effect against most targets, given careful aim and target selection.

120 mm Ordnance BL Tk. L11 Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 53 -10°/+20° ±180° Two-plane 21.4 29.6 36.0 39.8 42.4 9.7 8.6 7.9 7.5
Realistic 13.4 15.8 19.1 21.1 22.5

Ammunition

The available ammunition allows for engaging all types of targets:

  • L15A3: APDS; an armour-piercing round with a discarding sabot that has a good penetration power and no explosive filler. As it lacks post-penetration damage, the tactic with an APDS shot is to either knock out the majority of the tank's crew or to provoke ammo or fuel detonation by targeting their respective locations. This requires good knowledge of the layouts of potential opposing vehicles. Use the Protection analysis feature in the hangar menu to analyse potential foes for their weak spots! Also, keep in mind that with increased armour thickness the number of shrapnel shrinks.
  • L31A7: HESH; a high-explosive squash head projectile works very differently from other shell types. It ignores any angle, except for ricochet, and deals damage by metal-flakes which are blown off inside the armour by the exterior explosion. To create this deadly shrapnel inside the tank, make sure to only hit armour plates which are a direct part of the interior crew compartment of the tank. Hitting exterior parts of a tank like spaced armour, the suspension, tracks etc. will not harm crew members/modules at all. Currently, only true armour thickness (as opposed to the line of sight thickness) will provide sufficient means of protection, benefiting the USSR turret designs and in general German tanks. Like all high-explosive shells, the fuse is very sensitive and can be set-off by most objects e.g. fences, trees, posts. The slow muzzle velocity of this shell can make it quite hard to hit targets at longer distances, but at the same time it can be handy because its arc trajectory allows it to land hits on enemies hiding behind shallow hills.
  • L23: APFSDS; a kinetic dart with high penetration power capable of easily penetrating the majority of the foes it meets but without explosive filler. As it lacks post-penetration damage, the tactic with an APDS shot is to either knock out the majority of the tank's crew or to provoke ammo or fuel detonation by targeting their respective locations. This requires good knowledge of the layouts of potential opposing vehicles. Use the Protection analysis feature in the hangar menu to analyse potential foes for their weak spots! Also, keep in mind that with increased armour thickness the number of shrapnel shrinks.
  • L34: Smoke; useful to blind enemy vehicles that are too remote for you to disable so that you can progress towards objectives.
Penetration statistics
Ammunition Type of
warhead
Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
Shot L15A3 APDS 320 315 305 294 280 270
Shell L31A7 HESH 152 152 152 152 152 152
Shot L23 APFSDS 410 408 405 400 390 380
Shell details
Ammunition Type of
warhead
Velocity
(m/s)
Projectile
Mass (kg)
Fuse delay
(m)
Fuse sensitivity
(mm)
Explosive Mass
(TNT equivalent) (g)
Ricochet
0% 50% 100%
Shot L15A3 APDS 1,370 7.6 N/A N/A N/A 75° 78° 80°
Shell L31A7 HESH 670 17.1 0.4 0.1 6,560 73° 77° 80°
Shot L23 APFSDS 1,535 3.89 N/A N/A N/A 76° 77° 80°
Smoke shell characteristics
Ammunition Velocity
(m/s)
Projectile
Mass (kg)
Screen radius
(m)
Screen deploy time
(s)
Screen hold time
(s)
Explosive Mass
(TNT equivalent) (g)
L34 670 17.1 20 5 25 50

Ammo racks

Full
ammo
1st
rack empty
2nd
rack empty
3rd
rack empty
4th
rack empty
5th
rack empty
6th
rack empty
Visual
discrepancy
53 __ (+__) __ (+__) __ (+__) __ (+__) __ (+__) __ (+__) __

Optics and night vision

The magnification of the gunner's optics on the Chieftain Mk 10 is ok, but not anything special compared to other tanks it faces. There is only a minimal difference between the default magnification and the zoomed in magnification.

The Chieftain is equipped with a fairly basic night vision system, consisting of image intensifiers and an IR searchlight, there is no thermal imager. The image intensifiers are fairly standard compared to those fitted to vehicles of the same time period, they have a lower resolution and higher noise than those fitted to later vehicles.

Chieftain Mk 10 Optics
Type of optic Magnification Night Vision Devices
Image Intensifier Thermal Imager
Resolution
Notes
Resolution Light Mult Noise Level
Gunner's Sight X7.25 - X8 800 x 600 8.0 High Not Fitted Image intensifier unlocked by "NVD" mod (tier 3)
Commander's View X6 800 x 600 8.0 High Not Fitted Image intensifier unlocked by "NVD" mod (tier 3)
Driver's View X1 800 x 600 5.0 High Not Fitted Image intensifier unlocked by "NVD" mod (tier 3)

The IR searchlight on the Chieftain Mk 10 is mounted in a distinctive box on the left hand side of the turret, it has a wide beam compared to other searchlights; however due to its placement some of the turret blocks some of the light which would otherwise go to the right. In practice this slightly narrows the beam, compared to the theoretical angle listed below (it is still much wider than other searchlights though).

Chieftain Mk 10 IR Searchlight
Max Range Beam Width Location / Notes
1,500 m 15.3° Searchlight mounted in box on left hand side of turret, does not pitch up or down.

Machine guns

The small caliber of the 7.62 machine gun makes them largely ineffective against all armoured vehicles but the ones with an open compartment or to destroy incoming ATGMs, with a bit of luck.

7.62 mm L37A1
Mount Capacity (Belt) Fire rate Vertical Horizontal
Pintle 2,000 (100) 650 -10°/+50° ±120°
7.62 mm L8A1
Mount Capacity (Belt) Fire rate Vertical Horizontal
Coaxial 6,000 (200) 600 N/A N/A

Usage in battles

The Chieftain Mk 10 plays similarly to the Mk 3/Mk 5 - ideally taking long-ranged engagements from hull-down positions, or when forced into shorter-ranged engagements avoiding exposing the vehicle as much as possible. Fortunately, the Stillbrew addition on the Mk.10 significantly reduces the risks of exposing the turret, with the composite capable of deflecting most kinetic rounds it will face - although the armour package is not invulnerable to chemical rounds; some powerful HEAT rounds and most late ATGMs will easily punch through it. Augmenting the vehicle's ability further is the (researchable) access to L23 APFSDS, which significantly improves the L11's long range efficacy. Despite these improvements, the Chieftain still suffers from mediocre mobility and care must be taken to ensure one does not get engaged while the vehicle is moving, as the ability to quickly move into cover is often not an option.

Specific Adversaries

T-64B/T-80B: The Chieftain is susceptible to the T-64B and T-80B at close to medium ranges, where their highest-performance APFSDS rounds or their ATGMs are capable of punching through the Stillbrew armour. As such, when forced to engage either of these vehicles try to force mistakes by staying in cover, encouraging them to move within your firing line rather than attempting to brute-force your way through them.

Leopard 2K: The Leopard 2K is a dangerous adversary due to its speed and ability to move quickly and potentially flank the Chieftain Mk.10. The Leopard is however fairly easy to destroy due to its essentially non-existent armour - although don't underestimate the ability for the sharp angles to bounce rounds.

AMX-40: The AMX-40 is a threat to the Chieftain Mk.10 for similar reasons to the Leopard 2K; as with the Leopard, be wary of flanks and the power of the AMX-40's APFSDS.

Modules

Tier Mobility Protection Firepower
I Tracks Parts Horizontal Drive
II Suspension Brake System FPE Adjustment of Fire NVD
III Filters Crew Replenishment Elevation Mechanism Shot L23 Smoke grenade
IV Transmission Engine L34 Laser rangefinder Artillery Support

Pros and cons

Pros:

  • Stillbrew composite armour makes a hull-down Chieftain essentially impervious to all but the best kinetic rounds. It is also resistant to most rank VI chemical rounds and early generation ATGMs. Due to this, the tank is a nightmare to fight with outdated tanks for many nations, as not many tanks can even scratch its turret directly to begin with
  • The L23 APFSDS round is very powerful and will have little trouble penetrating most vehicles at the Chieftain's rank
  • 10° of gun depression
  • Reasonably fast reload time for a 120mm with a base time of 9.5s and a best time of 7.5s
  • Reasonable reverse speed
  • Receives a Laser Rangefinder as a Tier 4 modification, the first British vehicle this is available on

Cons:

  • Stillbrew composite armour does not provide particularly good chemical protection against upgraded rank VI ATGM, which means, that while it can often allow Chieftain Mk 10 to ignore ATGM attacks from tanks like Begleitpanzer 57, KPz-70 or M551 and maybe even some attacks from unskilled IT-1 operator, in up-tier or against specialized rank VI ATGM tanks and tanks, which can carry advanced ATGM ( like BMP-1, BMP-1 (DDR), BMP-2, Type 89, Warrior, Etc.), the tank commander must be much more cautious
  • While turret is near invulnerable to shells with poor flight characteristics, it still retains a glaring weakspot in form of cupola, which can be penetrated and obliterated by almost any APHE, sometimes even from light tanks such as Begleitpanzer 57, resulting in full crew knockout. Because of this, the Chieftain Mk 10 is usually forced to keep their enemies away, even when going to the frontline
  • Very poor mobility characteristics, much slower than most medium tanks it have to face
  • Hull armour is negligible, comprised only of Cast Homogenous armour, which means that it is even weaker, than what it looks like
  • Hull penetration will often result in ammunition detonation as ammo is strewn throughout it

History

Concept

The idea of a "universal tank" began in Britain in 1944 when Montgomery and other influential people began advocating for a more standardized tank to replace the cruiser and infantry tank classes used on the field. Efforts did not start until after World War II under the General Staff designation A45, with development starting just as the new cruiser tank Centurion started to enter military service. The A45 was cancelled in 1948 after development troubles and its inability to be used as a "universal" platform. Ironically, the Centurion proved to be a better "universal tank" platform than the A45.[1]

Development

The Centurion tank series was very successful in British and its allies' service, but the development of new Soviet armour such as the IS-3 and T-54/55 caused the British tank arms race to take another leap forward. Development on the Centurion's successor began in 1951 under the name Medium Gun Tank No. 2. The project's priority was gun and armour, but with mobility to be equal to the Centurion's and weight of fewer than 45 tons. The weight limit caused a program known as the Concept Study Programme to commence in order to find ways to keep the tank under that weight limit yet meet all the armour and firepower specifications. One of the concepts that came out was the usage of bagged charges, which was already in use on naval ships but was a new concept for tank ammunition. Thus, a gun using the bagged charge propellant system began development in 1954, along with a new specification by General Staff that the Medium Gun Tank No.2, now known as FV4201, uses a conventional four crew tank with a turret and a better gun and armour than the Centurion. Though the Conqueror heavy tank was one such response to the firepower requirement, limited production cut that to only 200 units built.[1]

The biggest bump to the firepower of the FV4201 was the recommendation of a 120 mm calibre tank cannon. Though the Conqueror used a 120 mm, the new one would incorporate more innovative features such as the bagged charges. Other design features added was the usage of a Rolls-Royce V8 engine, an auxiliary engine, an automatic gearbox, and a reclining seat for the driver. The reclining seat was a very new feature in tank design as it reduced the vehicle's hull height and thus gave it a lower profile. Leyland Motors was assigned to be the main designer for the tank despite their commitment to the Centurion production lines. The manufacturing process of the tank was decided to be cast rather than welded. In 1957, several specifications added to the FV4201 impeded its attempt to fit in the specifications. A bigger turret was designed and it mounted IR equipment for night fighting. Troops requested more frontal and turret side armour, which along with the turret change caused an increase in the tank's overall weight. A controversial decision was also made in 1957 by NATO that tanks should have multi-fuel engines. The FV4201 installed a new engine conforming to these standards in 1958, a German engine derived from a Junkers Jumo aviation engine. This extended development time since the engine compartment had to be redesigned to fit the engine, raising the total tank weight to 50 tons. The engine, designated the L60, was received with a mixed reception by the Royal Armoured Corps (RAC) and other users due to its novel features. Britain stayed as the only user of a multi-fuel engine in the Cold War as many other nations found the concept impractical and abandoned it.[1]

As the FV4201 finalized its prototype stages, General Staff sent a revised specification for it. The tank was to have the firepower of the Conqueror with the mobility of the Centurion, an armour that maximizes the protection-weight ratio, a weight limit at 45 ton with a top speed of 26 mph and an operating range of 300 miles. The first wooden prototype was made in March 1959, with full prototypes ordered in June 1959 for troop trials. Vickers-Armstrong and Royal Ordnance Factory shared the manufacturing process and the first prototypes were built in January 1960. The first two prototype FV4201 was trialled in Germany alongside their new Leopard 1. The greatest issue with the FV4201 was the engine, which caused many failures due to vibration, a result of the flawed multi-fuel concept. Trials were delayed due to lack of parts to fix broken pieces and redesigns were requested to fix problems. After a lengthy trial period in 1962, the FV4201, now named the Chieftain, was sent to the operational unit in Germany for service and combat trials. The Chieftain was finally accepted for service in 1st May 1963, despite the many faults in the design. The first deliveries of the improved and redesigned Chieftains began in mid-1965. These were the Chieftain Mk 1's, which further revealed problems with the horsepower that the Mk 2 was designed and sent in April 1966. The Chieftain Mk 3 rolled out of the production lines in September 1969, it now weighed 53 tons and the L60 engine was producing 650 hp, still underpowered for the weight. Engine failures were still frequent and left the Chieftain with a sour note until the Mk 5 variant fixed these pressing issues with a new engine and NBC protection. The Mk 5 would be the main variant of the Chieftain in British service. During its production life from 1965 to 1985, a total of 2,265 Chieftains would be built by Britain, with about 1,000 used by the British Army.[1]

Service

The first British units to receive the Chieftains was the 1st and 5th Royal Tank Regiments back during the trials. The Chieftain, despite its initial engine flaws, proved to be combat-proof and could be upgraded to fit new requirements. Some of these upgrades were the addition of composite add-on armour to fight off new anti-tank technology such as the HEAT rounds. The Chieftain earned the title "most formidable tank in the world" during the 1960's Cold War period and also redefined the specifications of a "main battle tank". Its success is due to its novel main gun and heavily sloped armour, as well as satisfactory mobility and speeds able to compete with the Leopard 1. The Chieftain stayed in use by the British Army On the Rhine on the German border with the Warsaw Pact, which caused the Soviets to in turn station their best tanks such as their T-64's against the Chieftains. The British retained the Chieftains all the way until 1997, when it was replaced by the Challenger II, initially being used in addition to Challenger I.

The Chieftain was also successful in the export market, primarily in the Middle East to the hands of Iran, Jordan, Kuwait, and Oman. Another user of the Chieftain was Israel, with Britain initially agreeing to help set up production for locally produced Chieftains. Two Chieftains were sent for trials among the Israeli Defense Force in 1967. After two years of trials and deliberation for the acquirement of the Chieftains, Britain ultimately refused to offer the Israelis the Chieftain for political reasons. The Israeli trials benefit Britain with data on desert combat with the Chieftain, however, and the refusal did jump start Israel's tank program that would become the Merkava.

Despite that, sales to the Middle East soared, with Iran being the major buyer of the Chieftains with at least 887 of mostly the MK3 and MK5 variants sent to them before their revolution in 1979. The Chieftain saw prolonged combat in the Middle East in the Iran-Iraq War, including Operation Nasr which was the largest tank vs. tank battle of the war where the Iranian Chieftains and M60A1 Pattons fought against the Iraqi T-62s. After that war, the Chieftain in Kuwait then saw combat fighting the Iraqis during their invasion in 1990. Kuwait eventually replaced their Chieftains with the Yugoslavian M-84 tanks, which are a variant of the Soviet T-72s.

The Chieftain is still in service Iran, Jordan, and Oman in varying numbers, about 100 in Iran, 350 in Jordan, and 27 in Oman. The Chieftains underwent local upgrades to keep them up to date against a modern threat, which resulted in the Iran Mobarez Chieftain upgrade.

Legacy

The Chieftain helped revolutionize tank design with its innovative features. The most important was the reclining driver seat, which allowed the tank to have a lower profile as the driver was now that highest part of the hull in tank design. It also had the most powerful NATO tank armament in service until the advent of the German Rheinmetall 120 mm, which came about two decades later. Chieftain can be considered the definitive main battle tank of the 1960s and help transition the path between second-generation main battle tanks and the third.

Media

Skins
Videos

See also

Vehicles equipped with the same chassis
Other vehicles of similar configuration and role

External links

References

  1. 1.0 1.1 1.2 1.3 Dunstan Simon. Chieftain Main Battle Tank 1965-2003 Great Britain: Osprey Publishing Ltd., 2003


Britain medium tanks
Valentine  Valentine I · Valentine IX · Valentine XI
Cromwell  Cromwell I · Cromwell V · Cromwell V (RP-3)
Cromwell derivatives  Challenger · Avenger · Comet I · Comet I "Iron Duke IV" · Charioteer Mk VII
Centurion  Centurion Mk 1 · Centurion Mk.2 · Centurion Mk 3 · Centurion Mk.5 AVRE · Centurion Mk 10 · Centurion Action X · FV4202
Vickers MBT  Vickers Mk.1 · Vickers Mk.3 · Vickers Mk.7
Chieftain  Chieftain Mk 3 · Chieftain Mk 5 · Chieftain Mk 10
Challenger 1  Challenger Mk.2 · Challenger Mk.3 · Challenger DS
Challenger 2  Challenger 2 · Challenger 2 (2F) · Challenger 2 TES · Challenger 2 OES · Challenger 2E · Challenger 2 Black Night
Challenger 3  Challenger 3 TD
Australia  A.C.I · A.C.IV · Centurion Mk.5/1
South Africa  Olifant Mk.1A · Olifant Mk.2 · TTD
India  Vijayanta · Bhishma TWMP
Israel  ▄Sho't Kal Dalet
Jordan  Khalid
Sweden  ▄Strv 81 (RB 52)
USA  Grant I · Sherman II · Sherman Firefly · Sherman IC "Trzyniec"