A13 Mk I (3rd R.T.R.)

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Rank 6 USA
F-5C Pack
A13 Mk I (3rd R.T.R.)
uk_a_13_mk1_3rd_rtr.png
A13 Mk I (3rd R.T.R.)
AB RB SB
1.0 1.0 1.0
Purchase:250 Specs-Card-Eagle.png
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This page is about the British light tank A13 Mk I (3rd R.T.R.). For other versions, see A13 (Family).

Description

GarageImage A13 Mk I (3rd R.T.R.).jpg


The Tank, Cruiser, Mk III (A13) (3rd Royal Tank Regiment), also designated in-game as the A13 Mk I (3rd R.T.R.) is a premium rank I British light tank with a battle rating of 1.0 (AB/RB/SB). It was introduced along with the initial British tree line in Update 1.55 "Royal Armour". At some point, it was given for free if you chose Britain as first nation when you started the game.

General info

Survivability and armour

Armour type:

  • Rolled homogeneous armour (hull, turret)
  • Cast homogeneous armour (Gun mantlet)
Armour Front (Slope angle) Sides Rear Roof
Hull 14 mm Front plate
14 mm (0-62°) Front glacis
14 mm (64°) Lower glacis
7 + 7 mm 14 mm (0-62°) 14 mm
Turret 14 mm (0-15°) Turret front
14 mm (1-63°) Gun mantlet
14 mm (21°) 14 mm (2°) 14 mm
Cupola 14 mm 14 mm 14 mm 14 mm

Notes:

  • Suspension wheels and tracks are 15 mm thick while the torsion bars in between the side armour are 10 mm thick.
  • Hoisting points and optics covers are 14mm thick.
  • The sides of the hull benefit from spaced armour (2 x 7mm spaced circa 10 cm apart) but the thickness of the plates is too poor to properly act as such: HEAT and HE shells have no problem defeating it.

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 7 13.8 527 649 38.19 47.03
Realistic 48 6 301 340 21.81 24.64

Armaments

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: {{main|Name of the weapon}}. 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 article: QF 2-pounder (40 mm)
40 mm QF 2-pounder Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 87 -15°/+20° ±180° Vertical 15.23 21.08 25.60 28.31 30.12 3.64 3.22 2.97 2.80
Realistic 9.52 11.20 13.60 15.04 16.00

Ammunition

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 Mk.1 AP/T AP 72 68 52 37 27 19
Shot Mk.IXB APCBC/T APCBC 88 83 64 46 33 24
Shot Mk.1 APHV/T AP 80 78 67 56 47 40
Shell Mk.1 AP/T APHE 66 62 49 36 26 20
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 Mk.1 AP/T AP 792 1.08 N/A N/A N/A 47° 60° 65°
Shot Mk.IXB APCBC/T APCBC 792 1.242 N/A N/A N/A 48° 63° 71°
Shot Mk.1 APHV/T AP 853 1.08 N/A N/A N/A 47° 60° 65°
Shell Mk.1 AP/T APHE 792 1.08 1.2 9.0 19 47° 60° 65°
Ammo racks

Last updated: 1.99.0.51

Full
ammo
1st
rack empty
2nd
rack empty
3rd
rack empty
4th
rack empty
5th
rack empty
6th
rack empty
7th
rack empty
8th
rack empty
9th
rack empty
10th
rack empty
11th
rack empty
12th
rack empty
13th
rack empty
14th
rack empty
15th
rack empty
16th
rack empty
Visual
discrepancy
87 78 (+9) 75 (+12) 72 (+15) 69 (+18) 66 (+21) 62 (+25) 60 (+27) 56 (+31) 51 (+36) 47 (+40) 43 (+44) 41 (+46) 36 (+51) 31 (+56) 16 (+71) (+86) No
File:Ammoracks A13MkI.png
Ammo racks of the A13 Mk I (3rd R.T.R.).

Notes:

  • To minimize the risk of ammo rack detonation, keep racks 1 to 14 empty (31 (+56)). This will guarantee the center hull is empty of shells.

Machine guns

Main article: Vickers (7.7 mm)
7.7 mm Vickers
Coaxial mount
Capacity (Belt capacity) Fire rate
(shots/minute)
Vertical
guidance
Horizontal
guidance
3,500 (250) 390 N/A N/A

Usage in battles

This vehicle's role is that of a light tank in the truest sense, sporting an acceptable gun, great mobility and virtually no armour to speak of.

This tank has a very active playstyle and should not be used in the front lines. Instead, use your mobility to your advantage: Spot, flank and provide artillery support for your teammates, blind your enemies with well-placed smokes screens in key avenues. Make sure to only target secluded enemies in flanking tactics so you can take full advantage of the element of surprise and outflank your opponent. Never expose yourself for too long because even anti-aircraft guns are a potential threat to your non-angled armour. The QF 2-pounder has an awfully long-range accuracy so you must get close to your enemies to actually land a shot where you expect. Load up this agile (but reluctant) cat with ammo and flank your enemies with a constant flow of bullets.

Modules

Tier Mobility Protection Firepower
I Tracks Parts Horizontal Drive Shot Mk.IXB APCBC/T
II Suspension Brake System FPE Adjustment of Fire Shot Mk.1 APHV/T
III Filters Crew Replenishment Elevation Mechanism Smoke grenade
IV Transmission Engine Artillery Support Shell Mk.1 AP/T
This is a premium vehicle: all modifications are unlocked on purchase

Pros and cons

Pros:

  • Good gun for its rank
  • Fast
  • Slim target
  • Has a "lock", which is a primitive form of stabilisation; this makes stopping and firing a useful tactic as the 2-pdr doesn't bounce as much as a non-stabilised gun
  • Brings lots of ammo to the fight (87 rounds max)
  • Has forward-launching smoke launchers
  • Coaxial machine gun
  • Good horse-power per ton ratio
  • Decent turret sewing rate
  • -15° gun depression
  • Four crewmen and a three-man turret
  • Quite a fast reload, makes finishing off a target both quicker and easier
  • Very effective in its historical role, a flanker and scout

Cons:

  • Next to no armour
  • Barely any response from the engine
  • Loses speed when turning
  • The ability to carry almost 90 rounds comes at a cost, this cost is that the ammunition is very hard to miss and thus, the A13 series suffers from frequent ammunition detonations
  • Wiggles when trying to turn on 5th gear
  • Regular machine guns can penetrate side armour
  • The coaxial machine gun is a Vickers which, compared to other Rank I machine guns, has an incredibly slow fire rate
  • Not effective at anything other than how it was historically used; ill-advised to brawl or support heavier vehicles

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 long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/ History" (example: https://wiki.warthunder.com/(Vehicle-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under === In-game description ===, also if applicable).

Media

Excellent additions to the article would be video guides, screenshots from the game, and photos.

See 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.

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • encyclopedia page on the tank;
  • other literature.


Britain light tanks
A13  A13 Mk I · A13 Mk I (3rd R.T.R.) · A13 Mk II · A13 Mk II 1939
A15  Crusader II · Crusader "The Saint" · Crusader III
A17  Tetrarch I
IFV  Warrior
Wheeled  Daimler Mk II · AEC Mk II · Fox · Vickers Mk.11
Other  VFM5
South Africa 
SARC  SARC MkIVa · SARC MkVI (2pdr) · SARC MkVI (6pdr)
Ratel  Ratel 90 · Ratel 20
Rooikat  Rooikat Mk.1D · Rooikat 105 · Rooikat MTTD
Other  Concept 3 · Eland 90 Mk.7
USA  Stuart I · Stuart III

Britain premium ground vehicles
Light tanks  A13 Mk I (3rd R.T.R.) · A13 Mk II 1939 · AEC Mk II · Crusader "The Saint" · Rooikat 105
Medium tanks  A.C.I · Grant I · Cromwell V (RP-3) · Sherman IC "Trzyniec" · A.C.IV · Comet I "Iron Duke IV"
  Centurion Mk.2 · ▄Strv 81 (RB 52) · Centurion Mk.5 AVRE · Centurion Mk.5/1 · ▄Sho't Kal Dalet · Centurion Action X
  Vijayanta · Khalid · Challenger DS · Challenger 2 OES
Heavy tanks  Independent · Matilda Hedgehog · Excelsior · TOG II · Churchill Crocodile · Black Prince
Tank destroyers  Alecto I · Achilles (65 Rg.) · QF 3.7 Ram

Winter events
2022  Winter Quest
Pilot stars  Late 298D · ◄Tornado IDS MFG
Tanker stars  T-80UM2
Sailor stars  USS Newport News
2021  Operation W.I.N.T.E.R.
Pilot stars  C. 202D · ◊MiG-23MF
Tanker stars  A.C.I · AGS
Sailor stars  IJN Hayanami · MPK Pr.201K
2020  Operation W.I.N.T.E.R.
Pilot stars  Ro.57 Quadriarma · MiG-21PFM
Tanker stars  E.B.R. (1954) · Class 3 (P)
Sailor stars  Type K-8 No.13 · USS Baltimore
2019  Operation F.R.O.S.T.
Pilot stars  TIS MA · J6K1
Tanker stars  QF 3.7 Ram · ▃Merkava Mk.2B
Sailor stars  PT-811 · Jaguar
2018  Festive Quest
Pilot stars  M.B.152C1 · Fw 190 C
Tanker stars  SU-85A · T30
Christmas Lights  P-43A-1 · Comet I "Iron Duke IV"
2017  Festive Quest
Pilot christmas toys  P-40C · NC.900
Tanker christmas toys  AEC Mk II · Ersatz M10
Christmas Lights  Fw 189 A-1 · KV-2 (1940)
2016  Winter Holiday
Pilot stages  Ki-21-I hei · Me 262 A-2a
Tanker stages  ▃LVT(A)(4) (ZIS-2) · ▂Type 62
2015  War Thunder Fulfills Your Wishes!
Pilot reward  ▂P-63C-5
Tanker reward  VK 45.01 (P)
2014  Holiday War Thunder Marathon!
Pilot reward  I-301
Tanker reward  M8A1 GMC