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FV 221 Caernarvon
General characteristics
4 peopleCrew
61.0 tWeight
5 forward
2 back
Gear box
84 mm 20pdr OQF Mk.I cannonWeapon 1
65 roundsAmmunition
-10° / 20°Vertical guidance
7.92 mm BESA machine gunWeapon 2
3 600 roundsAmmunition
225 roundsBelt capacity
600 shots/minFire rate
78 000 Rp icon.pngResearch
230 000 Sl icon.pngPurchase
Sl icon.png5 370 / 7 040/6 410 / 8 403/3 700 / 4 850Repair
65 000 Sl icon.pngCrew training
230 000 Sl icon.pngExperts
990 Ge icon.pngAces
x 1.84 Rp icon.pngReward for battle


GarageImage Caernarvon.jpg

The FV 221 Caernarvon is a Rank IV British heavy tank with a battle rating of 6.7 (AB/RB) and 6.3 (SB). It was introduced along with the initial British tree line in Update 1.55 "Royal Armour". Featuring heavy armour on the hull with a Centurion Mk 3 turret, the Caernarvon provides adequate armour, mobility with the bite of a 20-pounder. The variant featured in the game is the Mark II, the experimental series with the 20-pounder whereas the Mark I was the initial prototype with a 17-pounder instead.

General info

Survivability and armour

Armour type:

  • Rolled homogeneous armour (Hull, Turret roof)
  • Cast homogeneous armour (Turret)
  • Structural steel (Side skirts)
Tank Armour Table
Armour Front Sides Rear Roof
Hull 127 mm (60°) Front glacis
76.2 mm (44°) Lower glacis
50.8 + 4 mm 50.8 mm (1°) 50.8 mm Front
18 + 8 mm Rear
Turret 152 mm (5-25°) Turret front
152 + 20 mm (5-52°) Gun mantlet
89 mm (5-26°) 89 mm (0-20°) 50.8 mm Turret boundary
29 mm Center of turret
Armour Front Rear Roof
Cupola 152 mm 90 mm 29 mm


  • Suspension wheels and bogies are 20 mm thick while tracks are 30 mm thick.
  • Steel boxes scattered on the hull and turret sides add 4 mm of armour at their placement.


Mobility characteristic
Weight (tons) Add-on Armour
weight (tons)
Max speed (km/h)
50.0 N/A 36 (AB)
34 (RB/SB)
Engine power (horsepower)
Mode Stock Upgraded
Arcade 1,046 ___
Realistic/Simulator 716 ___
Power-to-weight ratio (hp/ton)
Mode Stock Upgraded
Arcade 20.92 __.__
Realistic/Simulator 14.32 __.__


Main armament

84 mm 20pdr OQF Mk.I
Capacity Vertical
65 -10°/+20° ±180° Two-plane
Turret rotation speed (°/s)
Mode Stock Upgraded Prior + Full crew Prior + Expert qualif. Prior + Ace qualif.
Arcade 14.6 __.__ __.__ __.__ __.__
Realistic 10.7 __.__ __.__ __.__ __.__
Reloading rate (seconds)
Stock Prior + Full crew Prior + Expert qualif. Prior + Ace qualif.
8.1 __.__ __.__ __.__
Penetration statistics
Ammunition Type of
Penetration in mm @ 90°
10m 100m 500m 1000m 1500m 2000m
Shot Mk.1 APCBC 218 215 203 189 176 163
Shell Mk.1 HE 9 9 9 9 9 9
Shot Mk.3 APDS 285 283 262 239 218 198
Shell details
Ammunition Type of
in m/s
Mass in kg
Fuse delay

in m:

Fuse sensitivity

in mm:

Explosive Mass in g
(TNT equivalent):
Normalization At 30°
from horizontal:
0% 50% 100%
Shot Mk.1 APCBC 1019 9.1 N/A N/A N/A +4° 48° 63° 71°
Shell Mk.1 HE 1019 7.8 0.4 0.5 586 +0° 79° 80° 81°
Shot Mk.3 APDS 1430 4.0 N/A N/A N/A +1.5° 75° 78° 80°
Smoke characteristic
Ammunition Velocity
in m/s
Mass in kg
Screen radius
in m
Screen time
in s
Screen hold time
in s:
Explosive Mass in g
(TNT equivalent):
20pdr Shell SS Mk.1 650 10 13 5 20 50
Ammo racks
Ammo rack of the Caernarvon (May be outdated)
rack empty
rack empty
rack empty
rack empty
rack empty
rack empty
65 61 (+4) 57 (+8) 33 (+32) 22 (+43) 11 (+54) (+64) Yes

Front and Turret empty: 33 (+32)

Machine guns

Main article: BESA (7.92 mm)
7.92 mm BESA
Coaxial mount
Capacity (Belt capacity) Fire rate
3,600 (225) 600 N/A N/A

Usage in the 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).

Pros and cons


  • Same armament as the Centurion Mk 3, has a very good stock round and access to APDS
  • Very fast reload for a large calibre
  • Fast turret and hull traverse
  • Good acceleration
  • The Caernarvon plays like a beefed up Centurion Mk 3
  • Brake system is very responsive
  • Access to gun stabilizer
  • Wider tracks enables the Caernarvon to navigate through bad terrain much better than the Centurion Mk 3


  • Lower glacis is still a weak spot
  • Large ammo rack behind LFP (Can be removed by bringing less than 34 shells)
  • APDS shot does punctual damage
  • No explosive filler in any shells
  • Weak side armour, should not be exposed in any way when engaging an enemy
  • Top armour covering the engine is still only 8mm



In 1944, General Staff started a project called A45 Infantry Support Tank, which started around the same time as the development of the A41 Centurion cruiser tank. This project, after the war, was redesignated from a typical "Infantry Tank" and instead focused on a new role of a "Universal Tank" design in the form of the FV 200 series. The "Universal Tank" concept was to design a vehicle that would have a mobility comparable to that of cruiser tanks, but with the armour and firepower of heavy tanks. The FV 200 series designation was adopted and was to serve as a line of vehicles that used the same hull and chassis in different roles like armour recovery vehicles and self-propelled guns. The first tank of this series was to be the FV 201, which would be 55 tons and had the 20-pounder gun.

In 1949, a new requirement for the project called for the use of a 120 mm gun, possibly in response to the reveal of the Soviet IS-3 heavy tank in the Berlin Victory Parade in 1945. This new requirement would delay the initial deadlines for the tank as no gun of that caliber had been developed yet. As a interim development before such a gun could be made, the FV 201 hull was mounted with a turret from a Centurion Mk.2, which had a 17-pounder gun. This Centurion turret mated FV 201 tank was designated the FV 221 Caernavon, with a Mark I for the 17-pounder. The later combination of the Centurion Mk 3 turret instead of the Mk.2 upped the armament of the tank to the more powerful 20-pounder gun, this version named the Mark II. About 21 units of the Caernarvon Mark II was made in this method.


The Caernarvon, powerful as it was at the time period, was intended to fulfill the role of the new "Main Battle Tank" concept in the FV 200 series. However, the success of the lighter Centurion cruiser tank made it apparent that the Centurion was more capable in that role than the heavier and less mobile Caernarvon. Thus, this role was not given to the Caernarvon and its design was used instead for further chassis development for future tank development. In 1955, the basis of the Caernarvon was built into the first Conqueror tank. Several Caernarvon Mk.II's were rebuilt into Conqueror Mk. 2 standards in between 1958 and 1959.


An excellent addition to the article will be video guides, as well as screenshots from the game and photos.

Read also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example,

  • reference to the series of the vehicles;
  • links to approximate analogues of other nations and research trees.



Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • other literature.

Britain heavy tanks
Infantry tanks  A1E1 Independent · Matilda Mk II · A.33 Heavy Assault Tank "Excelsior" · Churchill Mk I · Churchill Mk III · Churchill Mk VII · A.43 Black Prince
Post-war  FV 221 Caernarvon · Tank Heavy Gun Conqueror Mk 2