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T21

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T21

T21_render_1.jpg
Battle Tier
1234567891011
Overview
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Well, the ones further down, of course.
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[Client Values; Actual values in
Specifically, the mismatch in crew values caused by commander's 10% crew skill bonus. Outside of a crew of 1 commander only, 100% crew is a fiction. The client values, given for 100% crew, will normally be taken into battle with 110% crew skill members aside from specific functions, causing their actual performance to deviate from the expected client value. These differences are taken into account in tooltip boxes.
]
900,000  Credits Cost
600600 HP Hit Points
23.15/23.223.14/26 t Weight Limit
Crew
  1. Commander
  2. Gunner
  3. Driver
  4. Radio Operator
  5. Loader
Mobility
550600 hp Engine Power
57/21 km/h Speed Limit
5860 deg/s Traverse
23.7625.93 hp/t Power/Wt Ratio
NoNo Pivot
Armor
28.6/25.4/22.2 mm Hull Armor
28.6/25.4/25.428.6/25.4/25.4 mm Turret Armor
Armament







{{#ifeq:ARMOR_PIERCING_CR|ARMOR_PIERCING||



{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||


AP/APCR/HE







{{#ifeq:ARMOR_PIERCING_CR|ARMOR_PIERCING||



{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||


AP/APCR/HE
Shells




















96/2800/68




















96/2800/68
Shell Cost
115/115/185115/115/185 HP Damage
120/177/38130/177/38 mm Penetration



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13.33 r/m 

Standard Gun

Reload Times
Nominal: 4.5 s
50% Crew: 5.57 s
75% Crew: 4.87 s
100% Crew: 4.31 s
Rammer: 3.88 s
Vents: 4.22 s
Both: 3.79 s
Both and BiA: 3.71 s
Both and Max Crew %: 3.56 s

See Crew, Consumables, or Equipment for more information.



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14.29 r/m 

Standard Gun

Reload Times
Nominal: 4.2 s
50% Crew: 5.2 s
75% Crew: 4.54 s
100% Crew: 4.03 s
Rammer: 3.63 s
Vents: 3.94 s
Both: 3.55 s
Both and BiA: 3.47 s
Both and Max Crew %: 3.33 s

See Crew, Consumables, or Equipment for more information.
Rate of Fire






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1631.85

Standard Gun

Using Shell Type 1 (115 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1631.85
50% Crew: 1316.75
75% Crew: 1508.8
100% Crew: 1702
100% Crew
Vents: 1739.95
Rammer: 1890.6
Both: 1933.15
Both and BiA: 1976.85
Both and Max Crew %: 2061.95

Advantageous Damage Per Minute
First-shot DPM: 1746.85
50% Crew: 1431.75
75% Crew: 1623.8
100% Crew: 1817
100% Crew
Rammer: 2005.6
Vents: 1854.95
Both: 2048.15
Both and BiA: 2091.85
Both and Max Crew %: 2176.95

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (115 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1631.85
50% Crew: 1316.75
75% Crew: 1508.8
100% Crew: 1702
100% Crew
Vents: 1739.95
Rammer: 1890.6
Both: 1933.15
Both and BiA: 1976.85
Both and Max Crew %: 2061.95

Advantageous Damage Per Minute
First-shot DPM: 1746.85
50% Crew: 1431.75
75% Crew: 1623.8
100% Crew: 1817
100% Crew
Rammer: 2005.6
Vents: 1854.95
Both: 2048.15
Both and BiA: 2091.85
Both and Max Crew %: 2176.95

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (185 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 2625.15
50% Crew: 2118.25
75% Crew: 2427.2
100% Crew: 2738
100% Crew
Vents: 2799.05
Rammer: 3041.4
Both: 3109.85
Both and BiA: 3180.15
Both and Max Crew %: 3317.05

Advantageous Damage Per Minute
First-shot DPM: 2810.15
50% Crew: 2303.25
75% Crew: 2612.2
100% Crew: 2923
100% Crew
Rammer: 3226.4
Vents: 2984.05
Both: 3294.85
Both and BiA: 3365.15
Both and Max Crew %: 3502.05

See here, here, or here for more information.






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1643.35

Standard Gun

Using Shell Type 1 (115 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1643.35
50% Crew: 1327.1
75% Crew: 1519.15
100% Crew: 1713.5
100% Crew
Vents: 1752.6
Rammer: 1904.4
Both: 1946.95
Both and BiA: 1989.5
Both and Max Crew %: 2075.75

Advantageous Damage Per Minute
First-shot DPM: 1758.35
50% Crew: 1442.1
75% Crew: 1634.15
100% Crew: 1828.5
100% Crew
Rammer: 2019.4
Vents: 1867.6
Both: 2061.95
Both and BiA: 2104.5
Both and Max Crew %: 2190.75

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (115 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1643.35
50% Crew: 1327.1
75% Crew: 1519.15
100% Crew: 1713.5
100% Crew
Vents: 1752.6
Rammer: 1904.4
Both: 1946.95
Both and BiA: 1989.5
Both and Max Crew %: 2075.75

Advantageous Damage Per Minute
First-shot DPM: 1758.35
50% Crew: 1442.1
75% Crew: 1634.15
100% Crew: 1828.5
100% Crew
Rammer: 2019.4
Vents: 1867.6
Both: 2061.95
Both and BiA: 2104.5
Both and Max Crew %: 2190.75

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (185 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 2643.65
50% Crew: 2134.9
75% Crew: 2443.85
100% Crew: 2756.5
100% Crew
Vents: 2819.4
Rammer: 3063.6
Both: 3132.05
Both and BiA: 3200.5
Both and Max Crew %: 3339.25

Advantageous Damage Per Minute
First-shot DPM: 2828.65
50% Crew: 2319.9
75% Crew: 2628.85
100% Crew: 2941.5
100% Crew
Rammer: 3248.6
Vents: 3004.4
Both: 3317.05
Both and BiA: 3385.5
Both and Max Crew %: 3524.25

See here, here, or here for more information.
Damage Per Minute


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0.41 m 

With 50% Crew: 0.508 m
With 75% Crew: 0.443 m
With 100% Crew: 0.393 m
With BiA: 0.384 m
With BiA and Vents: 0.376 m
Maximum possible: 0.361 m

For more details, see Crew


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0.36 m 

With 50% Crew: 0.446 m
With 75% Crew: 0.389 m
With 100% Crew: 0.345 m
With BiA: 0.338 m
With BiA and Vents: 0.33 m
Maximum possible: 0.317 m

For more details, see Crew
Accuracy


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2.3 s 

With 50% Crew: 2.849 s
With 75% Crew: 2.488 s
With 100% Crew: 2.205 s
With GLD: 2.005 s
With BiA: 2.157 s
With BiA and Vents: 2.11 s
With both and GLD: 1.918 s
Maximum possible: 1.839 s

For more details, see Crew or Equipment


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1.9 s 

With 50% Crew: 2.354 s
With 75% Crew: 2.055 s
With 100% Crew: 1.822 s
With GLD: 1.656 s
With BiA: 1.782 s
With BiA and Vents: 1.743 s
With both and GLD: 1.584 s
Maximum possible: 1.519 s

For more details, see Crew or Equipment
Aim time
4242 deg/s Turret Traverse
360° Gun Arc
-10°/+25°-10°/+25° Elevation Arc
7070 rounds Ammo Capacity
General
2020 % Chance of Fire






380 m 

With 50% Crew: 298.6 m
With 75% Crew: 339.3 m
With 100% Crew: 380 m
With Recon and Situational Awareness: 399.2 m
With Coated Optics: 418 m
With Binocular Telescope: 475 m
Maximum possible: 544 m

For more details, see Skills or Equipment






380 m 

With 50% Crew: 298.6 m
With 75% Crew: 339.3 m
With 100% Crew: 380 m
With Recon and Situational Awareness: 399.2 m
With Coated Optics: 418 m
With Binocular Telescope: 475 m
Maximum possible: 544 m

For more details, see Skills or Equipment
View Range


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410 m 

With 50% Crew: 331 m
With 75% Crew: 379 m
With 100% Crew: 427.6 m
With 100% Signal Boost: 492 m
When affected by 100% Relaying: 451 m
Maximum possible: 615.5 m

For more details, see Skills or Equipment


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745 m 

With 50% Crew: 601.4 m
With 75% Crew: 688.8 m
With 100% Crew: 777 m
With 100% Signal Boost: 894 m
When affected by 100% Relaying: 819.5 m
Maximum possible: 1118.4 m

For more details, see Skills or Equipment
Signal Range
Values are Stock - click for Top

Additional Statistics
(Top Configuration)

Camouflage

  • Stationary: 15.4%
  • When Moving: 15.4%
  • When Firing: 4.3%


Terrain Resistance

  • On Hard Ground: 0.86
  • On Medium Ground: 0.96
  • On Soft Ground: 1.63


Dispersion Change Values

  • Turret Contribution
  • Rotation: 0.12
  • Shot Recoil: 3.36
  • Suspension Contribution
  • Acceleration: 0.13
  • Turning: 0.13


With 100% Crew

VI

AnnoA71_T21.png

900000

The T21 is an American tier 6 light tank.

A lightweight version of the T20 medium tank with the M7 elongated chassis. The vehicle was developed in the first half of 1943. Unlike the T20 tank, the T21 featured reduced armor and lighter armament. The vehicle never entered mass production nor saw service.

The T21 is a lighter variant of the T20 medium tank. As such, it is rather large for a light tank, but it has good maneuverability and a great view range, on top of having a good power to weight ratio. Unfortunately, it's hampered by its low top speed. Additionally, it uses the same gun as the M4 E8/E2, having rather low penetration in exchange for a high rate of fire and DPM.

The T21 leads to the T71 DA.

Modules / Available Equipment and Consumables

Modules

Ico_gun_alpha.png

Guns

Tier Gun Penetration
(mm)
Damage
(HP)
Rate of fire
(rounds/minute)
Dispersion
(m/100m)
Aiming time
(s)
Weight
(kg)
Price
(Credits)

VI 76 mm Gun M1A2L 130/177/38 115/115/185 14.29 0.36 1.9 1590 61500
VI 76 mm Gun M1A1L 120/177/38 115/115/185 13.33 0.41 2.3 1567 50100

Ico_turret_alpha.png

Turrets

Tier Turret Turret Armor (front/sides/rear)
(mm)
Turret Traverse Speed
(deg/s)
View Range
(m)
Weight
(kg)
Price
(Credits)

VI T21 28.6/25.4/25.4 42 380 4500 17050

Ico_engine_alpha.png

Engines

Tier Engine Engine Power
(hp)
Chance of Fire on Impact
(%)
Weight
(kg)
Price
(Credits)

VII Ford GAN A 600 20 569 39400
VI Ford GAA A 550 20 569 36000

Ico_suspension_alpha.png

Suspensions

Tier Suspension Load Limit
(т)
Traverse Speed
(гр/сек)
Rmin Weight
(kg)
Price
(Credits)

V VVSS T48M1A1 23.2 58 B/2 5300 8300
VI VVSS T48M1A2 26 60 B/2 5300 16000

Ico_radio_alpha.png

Radios

Tier Radio Signal Range
(м)
Weight
(kg)
Price
(Credits)

X SCR 528 745 80 54000
VI AN/GRC-3 410 120 21600


Compatible Equipment

Vertical Stabilizer Mk 1 Light Spall Liner Camouflage Net Fill Tanks with CO2 Coated Optics Stabilizing Equipment System Experimental Optics Wear-Resistant Gun Laying Drive Venting System Innovative Loading System Extended Spare Parts Kit Enhanced Gun Laying Drive Enhanced Torsion Bars 1 t Class Improved Ventilation Class 1 Medium-Caliber Tank Gun Rammer Binocular Telescope Toolbox "Wet" Ammo Rack Class 1 

Compatible Consumables

Stabilizer Greasing Automatic Fire Extinguisher Natural Cover Optical Calibration Case of Cola Aim Tuning Experienced Firefighters 100-octane Gasoline 105-octane Gasoline Manual Fire Extinguisher Vent Purge Large First Aid Kit Large Repair Kit Duty Comes First Shell Organizer Orderly Ammo Rack Focus on Target Increased Focus Small First Aid Kit Small Repair Kit Gearbox Intricacy Steady Hand Pre-Battle Maintenance Combat Course 


Player Opinion

Pros and Cons

Pros:


  • Good view range and excellent at firing on the move
  • Light tank camo rating makes it a brilliant passive scout when equipped with a binocular telescope
  • Excellent hp/weight ratio and very high traverse gives this scout tank good mobility and speed
  • Nice penetration on the top gun, combined with good gun handling and a blistering fast ROF
  • Decent peek-a-boo flanker


Cons:


  • Poor armor, even for a light tank
  • Worst top speed of all Tier 6 light tanks. Can make getting to passive scout locations early enough difficult.
  • Large target, twice to three times as big as its main counterpart; the AMX 12t, being much easier to hit
  • Can be serious damaged by splash damage from artillery


Performance

As with any tank, equipment improves the effectiveness of the T21. It is recommended to combine (or mix and match as preferred) equipment to these main playstyles:

Scout: Camouflage Net, Binoculars, (choice is yours, recommend Coated Optics) In this role, you'll play more passive than active scouting. The T21 doesn't have the speed or low profile to play an active scout, so guerrilla tactics are important here; hence the Net and Binoculars.

Flanker: Gun Rammer, Vertical Stabilizer (if you can afford it/steal it off another tank), [Gun laying drive/Vents depending on preference]. This will let you use that sweet M1A2 at will. Play always in and with support and you can lay some serious damage on the enemy. However, do be aware you won't last nearly as long as mediums do while trying to function in the same role as them. Coated Optics might help you if you choose this set up, as it allows you to become a deadly Artillery Hunter, finding and eliminating any SPGs.

A more balanced setup would use binoculars, a rammer, and a vertical stabilizer. This setup will maximize your flexibility and allow you to fulfill multiple roles. This will maximize your DPM and ability to fire accurately on the move. The T21 is too slow to actively scout, though it makes an excellent passive scout. Of note is the T21's ability to fire accurately on the move; this is great for chasing other tanks or for flanking.


Early Research

  • Neither the 76 mm Gun M1A2L nor the Ford GAN A Engine require the upgraded suspension, so research them in whichever order you want to.
  • Finally, research the VVSS T48M1A2 Suspension.


Suggested Equipment


Binocular Telescope Vertical Stabilizer Medium-Caliber Tank Gun Rammer Improved VentilationEnhanced Gun Laying Drive Camouflage Net 


Gallery

Historical Info

T21 wooden mockup
Not strictly part of the T20 series medium tanks, but closely related to them, the T21 was proposed as a replacement for the M3 and M5 series of Light tanks. It was to have been based on the T20 mechanics, would have had a 30 mm armour base, been armed with the 76 mm gun and weighed 24 tons. The design was prepared but held in abeyance as it was deemed too heavy for the light tank class. Ultimately the T21 concept was superseded by the T24 program, which was standardized as the M24 Chaffee.


Historical Gallery

Sources and External Links

USA
Light Tanks IT1 Cunningham IIM2 Light Tank IIT1E6 IIT2 Light Tank IIT7 Combat Car IIIM22 Locust IIIM3 Stuart IVM5 Stuart VM24 Chaffee VM7 VIT21 VIT37 VIIT71 CMCD VIIT71 DA VIIIT92 VIIIM41 Walker Bulldog IXT49 XXM551 Sheridan
Medium Tanks IIT2 Medium Tank IIIM2 Medium Tank IVM3 Lee VM4 Improved VM4A2E4 Sherman VM4 Sherman VRam II VIM4A3E8 Fury VIM4A3E8 Thunderbolt VII VIM4A3E8 Sherman VIM4A3E2 Sherman Jumbo VIIT20 VIIT23E3 VIIIT25 Pilot Number 1 VIIIM46 Patton KR VIIIM26 Pershing VIIIT26E4 SuperPershing VIIIT69 VIIIT95E2 IXM46 Patton IXT54E1 XM48A5 Patton XM60 XT95E6
Heavy Tanks VT14 VT1 Heavy Tank VIM6 VIIT29 VIIIT26E5 VIIIM6A2E1 VIIIT32 VIIIT34 VIIIT34 B IXM103 XT110E5 XT57 Heavy Tank
Tank Destroyers IIT3 HMC IIIT56 GMC IVM8A1 IVT40 VM10 Wolverine VT67 VIM18 Hellcat VIM36 Jackson VIIM56 Scorpion VIIT28 Concept VIIT25/2 VIIT25 AT VIIIT28 VIIIT28 Prototype IXT30 IXT95 XT110E3 XT110E4
Self-Propelled Artillery IIT1 HMC IIIT18 HMC IIIM7 Priest IVT82 HMC IVM37 VM41 HMC VIM44 VIIM12 VIIIM40/M43 IXM53/M55 XT92 HMC
Light Tanks
USA IT1 Cunningham IIM2 Light Tank IIT1E6 IIT2 Light Tank IIT7 Combat Car IIIM22 Locust IIIM3 Stuart IVM5 Stuart VM24 Chaffee VM7 VIT21 VIT37 VIIT71 CMCD VIIT71 DA VIIIT92 VIIIM41 Walker Bulldog IXT49 XXM551 Sheridan
UK IICruiser Mk. I IIM2 IICruiser Mk. III IILight Mk. VIC IIIStuart I-IV IIICruiser Mk. IV IIICruiser Mk. II IVValentine IVCovenanter
Germany ILeichttraktor IIPz.Kpfw. II Ausf. D IIPz.Kpfw. 38H 735 (f) IIPz.Kpfw. 35 (t) IIPz.Kpfw. I IIPz.Kpfw. II III43 M. Toldi III IIIPz.Kpfw. 38 (t) IIIPz.Kpfw. III Ausf. E IIIPz.Kpfw. II Ausf. J IIIPz.Kpfw. I Ausf. C IIIPz.Kpfw. II Ausf. G IIIPz.Kpfw. T 15 IVPz.Kpfw. 38 (t) n.A. IVPz.Kpfw. II Luchs VVK 16.02 Leopard VIVK 28.01 VIIAufklärungspanzer Panther VIISpähpanzer SP I C VIIIleKpz M 41 90 mm GF VIIIHWK 12 IXSpähpanzer Ru 251 XRheinmetall Panzerwagen
France IRenault FT IID1 IIFCM 36 IIRenault R35 IIHotchkiss H35 IIIAMX 38 IVAMX 40 VAMX ELC bis VIAMX 12 t VIIAMX 13 75 VIIAMX 13 57 GF VIIIBat.-Châtillon 12 t IXAMX 13 90 XAMX 13 105
USSR IMS-1 IIBT-2 IIT-45 IIT-26 IIT-60 IITetrarch IIIBT-7 IIIBT-SV IIILTP IIIM3 Light IIIBT-7 artillery IIIT-127 IIIT-46 IIIT-70 IVA-20 IVT-80 IVValentine II VT-50 VIMT-25 VIILTG VIIILTTB IXT-54 ltwt. XT-100 LT
China IRenault NC-31 IIVickers Mk. E Type B IIIType 2597 Chi-Ha IVM5A1 Stuart VI59-16 VIType 64 VIIType 62 VIIWZ-131 VIIIWZ-132 IXWZ-132A XWZ-132-1
Japan IRenault Otsu IIType 95 Ha-Go IIType 97 Te-Ke IIIType 98 Ke-Ni IVType 5 Ke-Ho
Czechoslovakia IKolohousenka IILT vz. 35 IIILT vz. 38
Sweden IStrv fm/21 IIStrv m/38 IIL-60 IIIStrv m/40L
Poland