Difference between revisions of "M3A1 Stuart"

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{{Specs-Card|code=us_m3a1_stuart}}
 
{{Specs-Card|code=us_m3a1_stuart}}
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{{About
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| about = American light tank '''{{PAGENAME}}'''
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|other
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|usage-1 = other uses
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|link-1 = M3 (Disambiguation)
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|usage-2 = other vehicles of the family
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|link-2 = M3 Stuart (Family)
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}}
  
 
== 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.''
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<!-- ''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.'' -->
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[[File:GarageImage_M3A1Stuart.jpg|420px|thumb|left]]
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{{Break}}
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The '''{{Specs|name}}''' is a rank {{Specs|rank}} American light tank {{Battle-rating}}. It was one of the first American tanks to be released with the American ground tree in [[Update 1.45 "Steel Generals"]]. Compared to its predecessor, the [[M3 Stuart|M3]], it has a more streamlined turret shape that presents a smaller target, the M3A1 is in a folder with its predecessor.
  
 
== General info ==
 
== General info ==
 +
[[File:M3A1 screenshot 3.jpg|thumb|M3A1 takes hits while engaging enemy vehicles.]]
 
=== 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 helpfull for survival in combat?''
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<!-- ''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.''
+
Being a light tank the M3A1 has fairly thin armour, it can generally protect against most machine guns and some smaller (20mm) cannons, but will usually not stand up against the main weapons of most enemy tanks at its BR. There is a fair amount of empty space inside the tank, this means that some poorly placed shots can go through your tank without causing much damage.
 +
 
 +
'''Armour type:'''
 +
 
 +
* Rolled homogeneous armour
 +
* Cast homogeneous armour (Gun mantlet)
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 +
{| class="wikitable"
 +
|-
 +
! Armour !! Front !! Sides !! Rear !! Roof
 +
|-
 +
| Hull || 38.1 mm (18°) ''Driver Port'' <br> 15.8 mm (69°) ''Front Glacis''  || 25.4 mm || 25.4 mm || 12.7 mm
 +
|-
 +
| Turret || 50.8 mm || 31.8 mm || 31.8 mm || 12.7 mm
 +
|-
 +
|}
  
 
=== 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.''
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<!-- ''Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability, as well as the maximum speed forwards and backwards.'' -->
 +
[[File:M3A1 Turning Demo.gif|thumb|400px|Demonstration of the slow and fast turning of the M3A1]]
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 +
{{tankMobility|abMinHp= 406|rbMinHp= 232}}
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 +
The M3A1 has competitive mobility with a ratio of 20.8 hp per ton. At lower speeds (5-10 km/h) the turning can feel rather sluggish, but once a bit of forward movement is applied and the speed is increased the turning will feel much smoother and faster. The forward drive of the M3A1 can max out at 47 km/h off-road and 58 km/h on-road which will usually allow you to reach capture points or desirable camping spots quickly. The 6 km/h reverse speed of the M3A1 is certainly usable in most situations.
  
 
== 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 flexibilty 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.''
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<!-- ''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.'' -->
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{{main|M6 (37 mm)}}
  
=== Additional armament ===
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Main weapon on the M3A1 is a 37mm M6 cannon featuring two rounds, AP & APCBC. This is a fairly standard gun for early American tanks as it is also featured on the [[M5A1]], [[M22]] & [[LVT(A)(1)]] although some of these vehicles also include a HE round that the M3A1 lacks.
''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.''
+
 
 +
{| class="wikitable" style="text-align:center" width="100%"
 +
|-
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! colspan="5" | [[M6 (37 mm)|37 mm M6]] || colspan="5" | Turret rotation speed (°/s) || colspan="4" | Reloading rate (seconds)
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|-
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! Mode !! Capacity !! Vertical !! Horizontal !! Stabilizer
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! Stock !! Upgraded !! Full !! Expert !! Aced
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! Stock !! Full !! Expert !! Aced
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|-
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! ''Arcade''
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| rowspan="2" | 106 || rowspan="2" | -10°/+20° || rowspan="2" | ±180° || rowspan="2" | Vertical || 19.04 || 26.35 || 32.00 || 35.39 || 37.65 || rowspan="2" | 3.77 || rowspan="2" | 3.33 || rowspan="2" | 3.07 || rowspan="2" | 2.90
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|-
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! ''Realistic''
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| 11.90 || 14.00 || 17.00 || 18.80 || 20.00
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|-
 +
|}
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 +
==== Ammunition ====
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{| class="wikitable sortable" style="text-align:center" width="100%"
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! colspan="8" | Penetration statistics
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|-
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! rowspan="2" data-sort-type="text" | Ammunition
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! rowspan="2" | Type of<br>warhead
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! colspan="6" | '''Penetration @ 0° Angle of Attack (mm)'''
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|-
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! 10 m !! 100 m !! 500 m !! 1,000 m !! 1,500 m !! 2,000 m
 +
|-
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| M74B1 || AP || 79 || 76 || 65 || 54 || 45 || 37
 +
|-
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| M51B1/B2 || APCBC || 87 || 84 || 73 || 60 || 50 || 41
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|-
 +
|}
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{| class="wikitable sortable" style="text-align:center" width="100%"
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! colspan="10" | Shell details
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|-
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! rowspan="2" data-sort-type="text" | Ammunition
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! rowspan="2" | Type of<br>warhead
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! rowspan="2" | Velocity<br>(m/s)
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! rowspan="2" | Projectile<br>Mass (kg)
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! rowspan="2" | Fuse delay<br>(m)
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! rowspan="2" | Fuse sensitivity<br>(mm)
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! rowspan="2" | Explosive Mass<br>(TNT equivalent) (g)
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! colspan="3" | Ricochet
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|-
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! 0% !! 50% !! 100%
 +
|-
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| M74B1 || AP || 883 || 0.87 || N/A || N/A || N/A || 47° || 60° || 65°
 +
|-
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| M51B1/B2 || APCBC || 883 || 0.87 || N/A || N/A || N/A || 48° || 63° || 71°
 +
|-
 +
|}
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 +
[[File:M3A1 Ammo Racks.jpg|thumb|[[Ammo racks|Ammo rack]] placement on the M3A1 ]]
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 +
==== [[Ammo racks]] ====
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{| class="wikitable" style="text-align:center"
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|-
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! Full<br>ammo
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! 1st<br>rack empty
 +
! 2nd<br>rack empty
 +
! 3rd<br>rack empty
 +
! Visual<br>discrepancy
 +
|-
 +
| '''106''' || 71&nbsp;''(+35)'' || 36&nbsp;''(+70)'' || 1&nbsp;''(+105)'' ||  No
 +
|-
 +
|}
  
 
=== Machine guns ===
 
=== 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.''
+
<!-- ''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|M1919A4 (7.62 mm)}}
  
== Usage in the battles ==
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The M3A1 employs a turret top MG and a coaxial MG, both of which are the same 7.62mm M1919A4 type, these guns are limited to a single AP & T belt type with up too 10mm of penetration.
''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).''
+
 
 +
{| class="wikitable" style="text-align:center"
 +
|-
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! colspan="5" | [[M1919A4 (7.62 mm)|7.62 mm M1919A4]]
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|-
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! Mount
 +
! Capacity<br>(Belt capacity)
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! Rate of fire<br>(shots/minute)
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! Vertical<br>guidance
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! Horizontal<br>guidance
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|-
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| Coaxial || 3,200 (250) || 500 || N/A || N/A
 +
|-
 +
| Pintle || 3,000 (250) || 500 || -5°/+70° || ±60°
 +
|-
 +
|}
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 +
== 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 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).'' -->
 +
[[File:M3A1 Screenshot 1.jpg|thumb|M3A1 attacking a StuG III]]
 +
Due to its light armour it is advisable not to use the M3A1 frontally at closer ranges, especially not against higher ranked enemy vehicles that will go through your strongest frontal armour (50.8 mm) without issue. The ideal tactic to use is to employ your competitive speed to flank the enemy and find a position that will allow you to attack them with little resistance. Even in a match against higher ranked enemy vehicles your rounds will have no issue going through the side armour of said enemy vehicles, common maps such as [[Eastern Europe (Ground Forces)|Eastern Europe]] and [[Cargo Port]] offer clear opportunities to flank the enemy vehicles with good amounts of cover. This is especially clear on [[Eastern Europe (Ground Forces)|Eastern Europe]] where you can flank on the other side of the river that runs through the map, this puts you at close range to the side of enemy vehicles, allowing you to prevent them reaching capture points such as the central B point.
 +
 
 +
To take down enemy vehicles it is advisable to destroy both their turret and engine to prevent escape and stop them engaging you or your allies, due to the fast reload (at best 2.9s) you can hit both parts of an enemy quickly, usually before they can fire back. If they are still not dead after the gun and engine have been hit, shots into the crew compartment should finish the job, but most enemy's are usually killed by the first 2 shots. It is common for any side shot against an enemy to penetrate and cause a fair level of damage, even if the enemy is not killed, your fast reload will grant you a second chance quickly to place an adjusted shot into the enemy. Even at longer ranges the M3A1 can be a competent sniper, especially if facing lighter vehicles with flat armour or the side armour of a targeted enemy, firing from long range is another way to ensure that your light armour does not hold you back, being at long range will usually prevent or make it difficult for enemy's to successfully hit your vehicle.
 +
 
 +
'''Enemies worth noting:'''
 +
 
 +
Specific enemy vehicles that bear mentioning are firstly any Germans with the [[KwK38 (20 mm)|20 mm KwK/FlaK38]] cannon, this gun might be small but can have up to 64 mm of pen, which is enough to go through the M3A1 almost anywhere. These guns can also fire 10 rounds at 280 rounds/min before having to reload the clip, meaning that they will very easily take out your crew before you have a chance to respond. To counter, the best chance you have is to angle your frontal armour which can make it difficult for the PzGr 40 rounds to penetrate. The Russian [[T-50]] and [[T-126]] are vehicles you will also see commonly, these have fairly thick and angled frontal armour that will prevent you from easily getting through. These tanks can also carry an APHEBC round that will destroy you in one shot with little difficulty, to counter you should use your speed to attempt to get a side shot into either the turret or engine. If the T-50 cannot move you can outrun its turret and finish it without much difficulty.
 +
 
 +
It is likely that the M3A1 will encounter some rough heavies, like the [[Matilda III]] and the [[B1 bis]]. The best tactic against these types of targets is to use the M3A1's fast speed, get within 200 m from them and attack, with shooting at point-blank range being the most effective way. Before conducting an attack, check the M3A1's and the enemy's surroundings to make sure no one will ambush the M3A1. While charging, use the M3A1's quick turns to suddenly change direction to avoid being shot if they are aiming and firing at the M3A1. Once the tank is at the ideal distance, manoeuvre so that the gun is perpendicular to their armour. Do not shoot if the enemy is angling! The small calibre 37 mm gun is very likely to bounce off or not penetrate against sloped armour.
 +
 
 +
For the Matilda III, shoot at the middle of the near-vertical frontal plate to knock out the driver first, since the 37 mm shell is not enough to knock out the gunner after penetrating. Once it is immobile, go to its side and finish it by shooting its hull sides. Or, shoot the right side of the gun mantlet to disable its gunner. For best chance of penetration, do not shoot its turret side.
 +
 
 +
For the B1, either aim for the near-vertical frontal armour plate at the right side of the hull, or the turret ring to incapacitate the commander/gunner, or simply move to its side and knock out the crews one by one by hitting its flat side armour.
 +
[[File:M3A1 Screenshot 2.jpg|thumb|M3A1 flanking on Eastern Europe]]
 +
 
 +
=== Modules ===
 +
{| class="wikitable"
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! Tier
 +
! colspan="2" | Mobility
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! Protection
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! colspan="2" | Firepower
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|-
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| I
 +
| Tracks
 +
|
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| Parts
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| Horizontal Drive
 +
| M51B1/B2
 +
|-
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| II
 +
| Suspension
 +
| Brake System
 +
| FPE
 +
| Adjustment of Fire
 +
|
 +
|-
 +
| III
 +
| Filters
 +
|
 +
| Crew Replenishment
 +
| Elevation Mechanism
 +
|
 +
|-
 +
| IV
 +
| Transmission
 +
| Engine
 +
|
 +
| 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. Do not 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".''
+
<!-- ''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:'''
*
+
 
 +
* Great cannon with good penetration, excellent rate of fire and gun depression; it can effectively penetrate common opponents like the [[Pz.II (Disambiguation)|Pz.II]] and [[Chi-Ha (Family)|Chi-Ha]], as well as heavy targets like the [[B1 bis]] or [[Matilda III]]
 +
* Excellent acceleration, top speed and turning ability on all terrains; easily outruns slower opponents like the [[Pz.III (Disambiguation)|Pz.III]]
 +
* Access to a vertical stabiliser which most tanks don't have, it is an advantage in close quarter encounters
 +
* Respectable frontal armour that, if angled, might bounce some shells from a distance (eg. Japanese 37 mm/German 20 mm)
 +
* Small turret profile makes it harder to get hit when hull-down
 +
* Empty space below the turret crew can absorb poorly aimed shots, they tend to not do much damage
  
 
'''Cons:'''
 
'''Cons:'''
*
 
  
== Historical part ==
+
* Weak armour against high-penetration shells like 50 mm Kwk 39 or 76 mm F-34
''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 "/historical reference" (example: https://wiki.warthunder.com/Name-vehicles/historical reference) and add a link to it here using the <code>main</code> template. Be sure to include links to sources at the end of the article.''
+
* Its shells do not have explosive filler, severely limiting the post-penetration effect especially against spacious tanks like the [[LVT(A)(1)]]
 +
* Inefficient brakes when trying to stop the tank at full speed
 +
* Hull is fairly tall for a light tank and the crews are closely packed, reducing its survivability
 +
 
 +
== History ==
 +
<!-- ''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).'' -->
 +
 
 +
===Development===
 +
The American light tank design prior to World War II, the [[M2A4|M2 light tank]], was seen as obsolete after observing Germany's Panzer forces tear through Europe. The design was to be upgraded with more armour, a better suspension, and a new gun recoil system. The revised version was designated the '''[[M3_Stuart|Light Tank M3]]''', which the British named the ''Stuart''. At its basis, the light tank had a 37 mm cannon with a similar layout as the M2 light tank, with the radial engine at the rear and the transmission on the front, though the radial engine was in high demand so the Guiberson diesel T-1210 were fitted in some models to substitute the engine. The design used the VVSS bogie system seen on previous American tank designs. The tank had a crew of four: driver, assistant driver, gunner, and commander, who doubled as the loader.
 +
 
 +
The first variant of the M3 ''Stuart'' light tank was very similar to the M2 light tanks. It had five machine gun armaments scattered around like the M2 but featured better armour and a better cannon with the 37 mm M6 cannon. The design did not have a turret basket for the crew and it was constructed out of rivets, which increased the chance of spalling in the tank. Nevertheless, the first variant M3 saw about 5,811 units produced. The second variant, the '''Light Tank M3A1 ''Stuart'' ''', featured a new turret with no cupola on it, plus an added gun stabilizer. The machine guns on the hull sides were removed, so now the total machine guns were reduced from five to three. The design also featured a welded armour design to remove the weakness of riveted armour. 4,621 of this variant was produced from May 1942 to February 1943. The most used variant, the '''[[M5A1|M5A1 Stuart]]''', had a completely redesigned hull and turret, with the hull most notably having a full sloping frontal armour than the previous designs. This variant had about 6,810 units produced. All in all, the M3 light tank design and its variants were produced in massive quantities from March 1941 to October 1943 with a total of 25,000 units produced.
 +
 
 +
===Combat usage===
 +
The British were the first to use the M3 ''Stuart'' in Africa in 1941, using it in Operation Crusader. However, the result ended with heavy losses, due to the better training the German Afrika Korps had compared to the British tank doctrine. The encounter also pointed out many flaws in the M3, mainly the cramped interior and limited operational range, but was praised for its high mobility and reliability when compared to the British contemporary designs. In 1942, the ''Stuarts'' were generally kept as recon units rather than combat units, and some were even modified to improve speed and range by removing the turret, and others were converted to armoured personnel carriers and command vehicles. Though the British used it extensively, it was still in small proportion compared to American usage. The Soviet Union was also another user of the M3 but found it unfavourable due to their own logistics, plus it was not made to withstand the Russian ''[https://en.wikipedia.org/wiki/Rasputitsa Rasputitsa]'' or even the winter. The Soviet eventually turned down any more offers for the ''Stuart'' by 1943. The M3s also supported the British and Chinese forces in Asia against the Japanese Army, and also France and Yugoslavia in Europe against the German Wehrmacht.
 +
 
 +
The Americans used it widely in both operational theatres. In the Pacific, the M3s were the first tanks America used in a tank vs. tank operation against the Imperial Japanese Army, where five M3s fought [[Ha-Go|Type 95 Ha-Gos]] in the Phillippines. Though the ''Stuarts'' were newer than the Japanese tank designs by about five years, they were seen as equal in performance and firepower, but the M3 benefited by the support of the American industry arm. The ''Stuarts'' served in the Pacific slightly better than its heavier counterparts such as the [[M4|M4 ''Shermans'']] due to its lighter weight and manoeuvrability in the poor jungle terrain, but the M3 ''Stuarts'' in the Pacific were gradually replaced by M4 ''Shermans'' due to heavy losses from its thinner armour. The M3 was also some of the first US tanks to be converted into flamethrower tanks, named as the ''"Satan"''. The Satan tanks provided favourable results to the concept of a flamethrower tank and were replaced by flamethrower-equipped M4 ''Shermans'' in 1945.
 +
 
 +
In Europe, the M3 formed a large part of the American tank battalions, though following the British path by sidelining the ''Stuarts'' from combat duties after heavy losses and to serve alongside ''Shermans'' as scouting units. A typical tank battalion for the US Army consisted of three companies of ''Shermans'' and one of ''Stuarts''. Other than scouting, the M3s were also used in cavalry roles and infantry support since their cannon are unable to compete with the German tank designs. Despite their dwindling capabilities in battle, the M3 was kept in service up until the end of the war due to the large production numbers.
 +
 
 +
After World War II, the ''Stuarts'' were given out as cheap surplus, countries such as China, India, and Pakistan picked up a few and used them in their conflicts. Portuguese also picked up a few M3s for the war in Angola, and the South African Corps continued using the ''Stuarts'' until 1955, where some were still kept in service until 1968 due to available parts. Today, Paraguay is still a user of the M3 light tanks, though as the only tracked armour used in the country.
 +
 
 +
The ''Stuart'' light tank design was also quite versatile that it was made into different variants for different roles on the battlefield. It served as an infantry support vehicle as to the ''[[M8 Scott|75mm GMC M8]]'' and experiments were also taken to see if it could be adapted to an anti-aircraft gun and a flamethrower as well. However, the M3 was becoming an ageing design with inferior armour, cramped interior layout, and a small 37 mm gun, so a program to replace the light tank began in 1943 and became the [[M24|M24 ''Chaffee'']], which would eventually replace the M3 Light Tank mostly after World War II.
 +
 
 +
=== In-game description ===
 +
Production of the M3A1 Stuart modification got underway in April 1942, with its primary changes affecting turret construction. The turret was a horseshoe-shaped M3, though it did not have a cupola, and two triangular hatches on its roof served as exits for the crew. The gunner and reloader had periscopes. The turret rotated using a power traverse as opposed to the manually rotated M3. Its faster rotation speed required changes in its construction, in particular a basket fitted with seats for the crew members.
 +
 
 +
The M23 mantlet was fitted with a 37 mm M6 cannon featuring a gyro stabilizer that significantly boosted accuracy while on the move. That did, however, require more training for gunners, a difficult assignment under battlefield conditions. The sponson-mounted immobile M1919A4 machine guns were replaced with additional ammunition storage, pushing the tank's capacity to 116 shells and 6,400 bullets.
 +
 
 +
From April to August of 1942 the M3A1 was produced alongside the M3. Changes were made gradually, meaning that some later M3s featured welded bodies and new turrets. They lacked, however, the basket and power traverse, and were called Stuart Hybrids. Some early M3A1s had sponson-mounted machine guns (the intervening models plugged up the openings) and riveted bodies. By the end of February 1943, 4,621 M3A1s had been assembled, 211 of them with the Guiberson T-1020-4 engines (called Stuart IVs by the British). It is worth noting that the M3A1s with welded bodies should have been designated M3A2s, though that never actually happened.
  
 
== Media ==
 
== Media ==
''An excellent addition to the article will be video guides, as well as screenshots from the game and photos.''
+
<!-- ''Excellent additions to the article would be video guides, screenshots from the game, and photos.'' -->
 +
{{Youtube-gallery|2wfjMlKtALw|''''Beginner's Pack' M3A1 USMC & P-36A''' - ''Bacongaming''}}
 +
 
 +
== See also ==
 +
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
  
== 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;''
 
* ''reference to the series of the vehicles;''
 
* ''links to approximate analogues of other nations and research trees.''
 
* ''links to approximate analogues of other nations and research trees.''
''ETC.''
 
  
== Sources ==
+
== External links ==
 
''Paste links to sources and external resources, such as:''
 
''Paste links to sources and external resources, such as:''
 +
 
* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
* ''page on the Wikipedia;''
+
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{{USA light tanks}}

Revision as of 11:51, 8 June 2020

RANK 6 BRITAIN
Rooikat 105 PACK
M3A1 Stuart
us_m3a1_stuart.png
M3A1 Stuart
AB RB SB
2.0 2.3 2.3
Class:
Research:5 900 Specs-Card-Exp.png
Purchase:6 300 Specs-Card-Lion.png
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This page is about the American light tank M3A1 Stuart. For other uses, see M3 (Disambiguation). For other vehicles of the family, see M3 Stuart (Family).

Description

GarageImage M3A1 Stuart.jpg


The Light Tank M3A1 Stuart is a rank I American light tank with a battle rating of 2.0 (AB) and 2.3 (RB/SB). It was one of the first American tanks to be released with the American ground tree in Update 1.45 "Steel Generals". Compared to its predecessor, the M3, it has a more streamlined turret shape that presents a smaller target, the M3A1 is in a folder with its predecessor.

General info

M3A1 takes hits while engaging enemy vehicles.

Survivability and armour

Being a light tank the M3A1 has fairly thin armour, it can generally protect against most machine guns and some smaller (20mm) cannons, but will usually not stand up against the main weapons of most enemy tanks at its BR. There is a fair amount of empty space inside the tank, this means that some poorly placed shots can go through your tank without causing much damage.

Armour type:

  • Rolled homogeneous armour
  • Cast homogeneous armour (Gun mantlet)
Armour Front Sides Rear Roof
Hull 38.1 mm (18°) Driver Port
15.8 mm (69°) Front Glacis
25.4 mm 25.4 mm 12.7 mm
Turret 50.8 mm 31.8 mm 31.8 mm 12.7 mm

Mobility

Demonstration of the slow and fast turning of the M3A1
Game Mode Max Speed (km/h) Weight (tons) Engine power (horsepower) Power-to-weight ratio (hp/ton)
Forward Reverse Stock Upgraded Stock Upgraded
Arcade 65 8 12.9 406 500 31.47 38.76
Realistic 59 7 232 262 17.98 20.31

The M3A1 has competitive mobility with a ratio of 20.8 hp per ton. At lower speeds (5-10 km/h) the turning can feel rather sluggish, but once a bit of forward movement is applied and the speed is increased the turning will feel much smoother and faster. The forward drive of the M3A1 can max out at 47 km/h off-road and 58 km/h on-road which will usually allow you to reach capture points or desirable camping spots quickly. The 6 km/h reverse speed of the M3A1 is certainly usable in most situations.

Armaments

Main armament

Main article: M6 (37 mm)

Main weapon on the M3A1 is a 37mm M6 cannon featuring two rounds, AP & APCBC. This is a fairly standard gun for early American tanks as it is also featured on the M5A1, M22 & LVT(A)(1) although some of these vehicles also include a HE round that the M3A1 lacks.

37 mm M6 Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 106 -10°/+20° ±180° Vertical 19.04 26.35 32.00 35.39 37.65 3.77 3.33 3.07 2.90
Realistic 11.90 14.00 17.00 18.80 20.00

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
M74B1 AP 79 76 65 54 45 37
M51B1/B2 APCBC 87 84 73 60 50 41
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%
M74B1 AP 883 0.87 N/A N/A N/A 47° 60° 65°
M51B1/B2 APCBC 883 0.87 N/A N/A N/A 48° 63° 71°
File:M3A1 Ammo Racks.jpg
Ammo rack placement on the M3A1

Ammo racks

Full
ammo
1st
rack empty
2nd
rack empty
3rd
rack empty
Visual
discrepancy
106 71 (+35) 36 (+70) (+105) No

Machine guns

Main article: M1919A4 (7.62 mm)

The M3A1 employs a turret top MG and a coaxial MG, both of which are the same 7.62mm M1919A4 type, these guns are limited to a single AP & T belt type with up too 10mm of penetration.

7.62 mm M1919A4
Mount Capacity
(Belt capacity)
Rate of fire
(shots/minute)
Vertical
guidance
Horizontal
guidance
Coaxial 3,200 (250) 500 N/A N/A
Pintle 3,000 (250) 500 -5°/+70° ±60°

Usage in battles

M3A1 attacking a StuG III

Due to its light armour it is advisable not to use the M3A1 frontally at closer ranges, especially not against higher ranked enemy vehicles that will go through your strongest frontal armour (50.8 mm) without issue. The ideal tactic to use is to employ your competitive speed to flank the enemy and find a position that will allow you to attack them with little resistance. Even in a match against higher ranked enemy vehicles your rounds will have no issue going through the side armour of said enemy vehicles, common maps such as Eastern Europe and Cargo Port offer clear opportunities to flank the enemy vehicles with good amounts of cover. This is especially clear on Eastern Europe where you can flank on the other side of the river that runs through the map, this puts you at close range to the side of enemy vehicles, allowing you to prevent them reaching capture points such as the central B point.

To take down enemy vehicles it is advisable to destroy both their turret and engine to prevent escape and stop them engaging you or your allies, due to the fast reload (at best 2.9s) you can hit both parts of an enemy quickly, usually before they can fire back. If they are still not dead after the gun and engine have been hit, shots into the crew compartment should finish the job, but most enemy's are usually killed by the first 2 shots. It is common for any side shot against an enemy to penetrate and cause a fair level of damage, even if the enemy is not killed, your fast reload will grant you a second chance quickly to place an adjusted shot into the enemy. Even at longer ranges the M3A1 can be a competent sniper, especially if facing lighter vehicles with flat armour or the side armour of a targeted enemy, firing from long range is another way to ensure that your light armour does not hold you back, being at long range will usually prevent or make it difficult for enemy's to successfully hit your vehicle.

Enemies worth noting:

Specific enemy vehicles that bear mentioning are firstly any Germans with the 20 mm KwK/FlaK38 cannon, this gun might be small but can have up to 64 mm of pen, which is enough to go through the M3A1 almost anywhere. These guns can also fire 10 rounds at 280 rounds/min before having to reload the clip, meaning that they will very easily take out your crew before you have a chance to respond. To counter, the best chance you have is to angle your frontal armour which can make it difficult for the PzGr 40 rounds to penetrate. The Russian T-50 and T-126 are vehicles you will also see commonly, these have fairly thick and angled frontal armour that will prevent you from easily getting through. These tanks can also carry an APHEBC round that will destroy you in one shot with little difficulty, to counter you should use your speed to attempt to get a side shot into either the turret or engine. If the T-50 cannot move you can outrun its turret and finish it without much difficulty.

It is likely that the M3A1 will encounter some rough heavies, like the Matilda III and the B1 bis. The best tactic against these types of targets is to use the M3A1's fast speed, get within 200 m from them and attack, with shooting at point-blank range being the most effective way. Before conducting an attack, check the M3A1's and the enemy's surroundings to make sure no one will ambush the M3A1. While charging, use the M3A1's quick turns to suddenly change direction to avoid being shot if they are aiming and firing at the M3A1. Once the tank is at the ideal distance, manoeuvre so that the gun is perpendicular to their armour. Do not shoot if the enemy is angling! The small calibre 37 mm gun is very likely to bounce off or not penetrate against sloped armour.

For the Matilda III, shoot at the middle of the near-vertical frontal plate to knock out the driver first, since the 37 mm shell is not enough to knock out the gunner after penetrating. Once it is immobile, go to its side and finish it by shooting its hull sides. Or, shoot the right side of the gun mantlet to disable its gunner. For best chance of penetration, do not shoot its turret side.

For the B1, either aim for the near-vertical frontal armour plate at the right side of the hull, or the turret ring to incapacitate the commander/gunner, or simply move to its side and knock out the crews one by one by hitting its flat side armour.

M3A1 flanking on Eastern Europe

Modules

Tier Mobility Protection Firepower
I Tracks Parts Horizontal Drive M51B1/B2
II Suspension Brake System FPE Adjustment of Fire
III Filters Crew Replenishment Elevation Mechanism
IV Transmission Engine Artillery Support

Pros and cons

Pros:

  • Great cannon with good penetration, excellent rate of fire and gun depression; it can effectively penetrate common opponents like the Pz.II and Chi-Ha, as well as heavy targets like the B1 bis or Matilda III
  • Excellent acceleration, top speed and turning ability on all terrains; easily outruns slower opponents like the Pz.III
  • Access to a vertical stabiliser which most tanks don't have, it is an advantage in close quarter encounters
  • Respectable frontal armour that, if angled, might bounce some shells from a distance (eg. Japanese 37 mm/German 20 mm)
  • Small turret profile makes it harder to get hit when hull-down
  • Empty space below the turret crew can absorb poorly aimed shots, they tend to not do much damage

Cons:

  • Weak armour against high-penetration shells like 50 mm Kwk 39 or 76 mm F-34
  • Its shells do not have explosive filler, severely limiting the post-penetration effect especially against spacious tanks like the LVT(A)(1)
  • Inefficient brakes when trying to stop the tank at full speed
  • Hull is fairly tall for a light tank and the crews are closely packed, reducing its survivability

History

Development

The American light tank design prior to World War II, the M2 light tank, was seen as obsolete after observing Germany's Panzer forces tear through Europe. The design was to be upgraded with more armour, a better suspension, and a new gun recoil system. The revised version was designated the Light Tank M3, which the British named the Stuart. At its basis, the light tank had a 37 mm cannon with a similar layout as the M2 light tank, with the radial engine at the rear and the transmission on the front, though the radial engine was in high demand so the Guiberson diesel T-1210 were fitted in some models to substitute the engine. The design used the VVSS bogie system seen on previous American tank designs. The tank had a crew of four: driver, assistant driver, gunner, and commander, who doubled as the loader.

The first variant of the M3 Stuart light tank was very similar to the M2 light tanks. It had five machine gun armaments scattered around like the M2 but featured better armour and a better cannon with the 37 mm M6 cannon. The design did not have a turret basket for the crew and it was constructed out of rivets, which increased the chance of spalling in the tank. Nevertheless, the first variant M3 saw about 5,811 units produced. The second variant, the Light Tank M3A1 Stuart , featured a new turret with no cupola on it, plus an added gun stabilizer. The machine guns on the hull sides were removed, so now the total machine guns were reduced from five to three. The design also featured a welded armour design to remove the weakness of riveted armour. 4,621 of this variant was produced from May 1942 to February 1943. The most used variant, the M5A1 Stuart, had a completely redesigned hull and turret, with the hull most notably having a full sloping frontal armour than the previous designs. This variant had about 6,810 units produced. All in all, the M3 light tank design and its variants were produced in massive quantities from March 1941 to October 1943 with a total of 25,000 units produced.

Combat usage

The British were the first to use the M3 Stuart in Africa in 1941, using it in Operation Crusader. However, the result ended with heavy losses, due to the better training the German Afrika Korps had compared to the British tank doctrine. The encounter also pointed out many flaws in the M3, mainly the cramped interior and limited operational range, but was praised for its high mobility and reliability when compared to the British contemporary designs. In 1942, the Stuarts were generally kept as recon units rather than combat units, and some were even modified to improve speed and range by removing the turret, and others were converted to armoured personnel carriers and command vehicles. Though the British used it extensively, it was still in small proportion compared to American usage. The Soviet Union was also another user of the M3 but found it unfavourable due to their own logistics, plus it was not made to withstand the Russian Rasputitsa or even the winter. The Soviet eventually turned down any more offers for the Stuart by 1943. The M3s also supported the British and Chinese forces in Asia against the Japanese Army, and also France and Yugoslavia in Europe against the German Wehrmacht.

The Americans used it widely in both operational theatres. In the Pacific, the M3s were the first tanks America used in a tank vs. tank operation against the Imperial Japanese Army, where five M3s fought Type 95 Ha-Gos in the Phillippines. Though the Stuarts were newer than the Japanese tank designs by about five years, they were seen as equal in performance and firepower, but the M3 benefited by the support of the American industry arm. The Stuarts served in the Pacific slightly better than its heavier counterparts such as the M4 Shermans due to its lighter weight and manoeuvrability in the poor jungle terrain, but the M3 Stuarts in the Pacific were gradually replaced by M4 Shermans due to heavy losses from its thinner armour. The M3 was also some of the first US tanks to be converted into flamethrower tanks, named as the "Satan". The Satan tanks provided favourable results to the concept of a flamethrower tank and were replaced by flamethrower-equipped M4 Shermans in 1945.

In Europe, the M3 formed a large part of the American tank battalions, though following the British path by sidelining the Stuarts from combat duties after heavy losses and to serve alongside Shermans as scouting units. A typical tank battalion for the US Army consisted of three companies of Shermans and one of Stuarts. Other than scouting, the M3s were also used in cavalry roles and infantry support since their cannon are unable to compete with the German tank designs. Despite their dwindling capabilities in battle, the M3 was kept in service up until the end of the war due to the large production numbers.

After World War II, the Stuarts were given out as cheap surplus, countries such as China, India, and Pakistan picked up a few and used them in their conflicts. Portuguese also picked up a few M3s for the war in Angola, and the South African Corps continued using the Stuarts until 1955, where some were still kept in service until 1968 due to available parts. Today, Paraguay is still a user of the M3 light tanks, though as the only tracked armour used in the country.

The Stuart light tank design was also quite versatile that it was made into different variants for different roles on the battlefield. It served as an infantry support vehicle as to the 75mm GMC M8 and experiments were also taken to see if it could be adapted to an anti-aircraft gun and a flamethrower as well. However, the M3 was becoming an ageing design with inferior armour, cramped interior layout, and a small 37 mm gun, so a program to replace the light tank began in 1943 and became the M24 Chaffee, which would eventually replace the M3 Light Tank mostly after World War II.

In-game description

Production of the M3A1 Stuart modification got underway in April 1942, with its primary changes affecting turret construction. The turret was a horseshoe-shaped M3, though it did not have a cupola, and two triangular hatches on its roof served as exits for the crew. The gunner and reloader had periscopes. The turret rotated using a power traverse as opposed to the manually rotated M3. Its faster rotation speed required changes in its construction, in particular a basket fitted with seats for the crew members.

The M23 mantlet was fitted with a 37 mm M6 cannon featuring a gyro stabilizer that significantly boosted accuracy while on the move. That did, however, require more training for gunners, a difficult assignment under battlefield conditions. The sponson-mounted immobile M1919A4 machine guns were replaced with additional ammunition storage, pushing the tank's capacity to 116 shells and 6,400 bullets.

From April to August of 1942 the M3A1 was produced alongside the M3. Changes were made gradually, meaning that some later M3s featured welded bodies and new turrets. They lacked, however, the basket and power traverse, and were called Stuart Hybrids. Some early M3A1s had sponson-mounted machine guns (the intervening models plugged up the openings) and riveted bodies. By the end of February 1943, 4,621 M3A1s had been assembled, 211 of them with the Guiberson T-1020-4 engines (called Stuart IVs by the British). It is worth noting that the M3A1s with welded bodies should have been designated M3A2s, though that never actually happened.

Media

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.


USA light tanks
LVT  LVT(A)(1) · ○LVT(A)(1) · LVT(A)(4)
M2  M2A2 · M2A4 · M2A4 (1st Arm.Div.)
M3/M5 Stuart  M3 Stuart · M3A1 Stuart · M3A1 (USMC) · M5A1 · M5A1 TD · ▃Stuart VI (5th CAD)
M22 Locust  M22
M24 Chaffee  M24 · M24 (TL)
M18 Hellcat  M18 GMC · M18 "Black Cat" · Super Hellcat
M41 Walker Bulldog  M41A1
M551 Sheridan  M551 · M551(76)
M3 Bradley  M3 Bradley · M3A3 Bradley
Wheeled  M8 LAC · T18E2 · M1128 · M1128 Wolfpack
Other  M8A1 GMC · T92 · T114 · HSTV-L · CCVL · XM8 · AGS