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Somua SAu 40

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Somua SAu 40

AnnoF32_Somua_Sau_40.png
France | TD | Tier IV
Battle Tier
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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.
]
110 000  Credits Cost
43086 HP Hit Points
24.09/24.58.02/26 t Weight Limit
Crew
  1. Comandante
  2. Artillero
  3. Conductor
  4. Operador de radio
  5. Cargador
Mobility
220260 hp Engine Power
37/12 km/h Speed Limit
2830 deg/s Traverse
9.1332.42 hp/t Power/Wt Ratio
YesYes Pivot
Armor
// mm Hull Armor
Armament







{{#ifeq:HOLLOW_CHARGE|ARMOR_PIERCING||



{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||


AP/HEAT/HE







{{#ifeq:HOLLOW_CHARGE|ARMOR_PIERCING||



{{#ifeq:|ARMOR_PIERCING||


HE/HEAT
Shells




















46/2800/38




















128/4000/38
Shell Cost
110/110/175410/350/175 HP Damage
68/92/3853/104/38 mm Penetration



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15.79 r/m 

Standard Gun

Reload Times
Nominal: 3.8 s
50% Crew: 4.71 s
75% Crew: 4.11 s
100% Crew: 3.64 s
Rammer: 3.28 s
Vents: 3.56 s
Both: 3.2 s
Both and BiA: 3.13 s
Both and Max Crew %: 3 s

See Crew, Consumables, or Equipment for more information.



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7.06 r/m 

Standard Gun

Reload Times
Nominal: 8.5 s
50% Crew: 10.53 s
75% Crew: 9.19 s
100% Crew: 8.15 s
Rammer: 7.34 s
Vents: 7.97 s
Both: 7.17 s
Both and BiA: 7.02 s
Both and Max Crew %: 6.73 s

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






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1736.9

Standard Gun

Using Shell Type 1 (110 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1736.9
50% Crew: 1402.5
75% Crew: 1606
100% Crew: 1811.7
100% Crew
Vents: 1852.4
Rammer: 2013
Both: 2058.1
Both and BiA: 2104.3
Both and Max Crew %: 2195.6

Advantageous Damage Per Minute
First-shot DPM: 1846.9
50% Crew: 1512.5
75% Crew: 1716
100% Crew: 1921.7
100% Crew
Rammer: 2123
Vents: 1962.4
Both: 2168.1
Both and BiA: 2214.3
Both and Max Crew %: 2305.6

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (110 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1736.9
50% Crew: 1402.5
75% Crew: 1606
100% Crew: 1811.7
100% Crew
Vents: 1852.4
Rammer: 2013
Both: 2058.1
Both and BiA: 2104.3
Both and Max Crew %: 2195.6

Advantageous Damage Per Minute
First-shot DPM: 1846.9
50% Crew: 1512.5
75% Crew: 1716
100% Crew: 1921.7
100% Crew
Rammer: 2123
Vents: 1962.4
Both: 2168.1
Both and BiA: 2214.3
Both and Max Crew %: 2305.6

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (175 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 2763.25
50% Crew: 2231.25
75% Crew: 2555
100% Crew: 2882.25
100% Crew
Vents: 2947
Rammer: 3202.5
Both: 3274.25
Both and BiA: 3347.75
Both and Max Crew %: 3493

Advantageous Damage Per Minute
First-shot DPM: 2938.25
50% Crew: 2406.25
75% Crew: 2730
100% Crew: 3057.25
100% Crew
Rammer: 3377.5
Vents: 3122
Both: 3449.25
Both and BiA: 3522.75
Both and Max Crew %: 3668

See here, here, or here for more information.






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2894.6

Standard Gun

Using Shell Type 1 (410 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 2894.6
50% Crew: 2337
75% Crew: 2677.3
100% Crew: 3017.6
100% Crew
Vents: 3087.3
Rammer: 3353.8
Both: 3427.6
Both and BiA: 3505.5
Both and Max Crew %: 3657.2

Advantageous Damage Per Minute
First-shot DPM: 3304.6
50% Crew: 2747
75% Crew: 3087.3
100% Crew: 3427.6
100% Crew
Rammer: 3763.8
Vents: 3497.3
Both: 3837.6
Both and BiA: 3915.5
Both and Max Crew %: 4067.2

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (350 Damage):


Theoretical Damage Per Minute
Nominal DPM: 2471
50% Crew: 1995
75% Crew: 2285.5
100% Crew: 2576
100% Crew
Vents: 2635.5
Rammer: 2863
Both: 2926
Both and BiA: 2992.5
Both and Max Crew %: 3122

Advantageous Damage Per Minute
First-shot DPM: 2821
50% Crew: 2345
75% Crew: 2635.5
100% Crew: 2926
100% Crew
Rammer: 3213
Vents: 2985.5
Both: 3276
Both and BiA: 3342.5
Both and Max Crew %: 3472

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (175 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1235.5
50% Crew: 997.5
75% Crew: 1142.75
100% Crew: 1288
100% Crew
Vents: 1317.75
Rammer: 1431.5
Both: 1463
Both and BiA: 1496.25
Both and Max Crew %: 1561

Advantageous Damage Per Minute
First-shot DPM: 1410.5
50% Crew: 1172.5
75% Crew: 1317.75
100% Crew: 1463
100% Crew
Rammer: 1606.5
Vents: 1492.75
Both: 1638
Both and BiA: 1671.25
Both and Max Crew %: 1736

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


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0.45 m 

With 50% Crew: 0.557 m
With 75% Crew: 0.487 m
With 100% Crew: 0.431 m
With BiA: 0.422 m
With BiA and Vents: 0.413 m
Maximum possible: 0.396 m

For more details, see Crew


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0.53 m 

With 50% Crew: 0.657 m
With 75% Crew: 0.573 m
With 100% Crew: 0.508 m
With BiA: 0.497 m
With BiA and Vents: 0.486 m
Maximum possible: 0.466 m

For more details, see Crew
Accuracy


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1.7 s 

With 50% Crew: 2.106 s
With 75% Crew: 1.839 s
With 100% Crew: 1.63 s
With GLD: 1.482 s
With BiA: 1.594 s
With BiA and Vents: 1.559 s
With both and GLD: 1.418 s
Maximum possible: 1.359 s

For more details, see Crew or Equipment


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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
Aim time
4444 deg/s Gun Traverse Speed
15° Gun Arc
-10°/+30°-10°/+30° Elevation Arc
6045 rounds Ammo Capacity
General
2020 % Chance of Fire






330 m 

With 50% Crew: 259.3 m
With 75% Crew: 294.7 m
With 100% Crew: 330 m
With Recon and Situational Awareness: 346.7 m
With Coated Optics: 363 m
With Binocular Telescope: 412.5 m
Maximum possible: 472.4 m

For more details, see Skills or Equipment






330 m 

With 50% Crew: 259.3 m
With 75% Crew: 294.7 m
With 100% Crew: 330 m
With Recon and Situational Awareness: 346.7 m
With Coated Optics: 363 m
With Binocular Telescope: 412.5 m
Maximum possible: 472.4 m

For more details, see Skills or Equipment
View Range


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300 m 

With 50% Crew: 242.2 m
With 75% Crew: 277.4 m
With 100% Crew: 312.9 m
With 100% Signal Boost: 360 m
When affected by 100% Relaying: 330 m
Maximum possible: 450.4 m

For more details, see Skills or Equipment


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455 m 

With 50% Crew: 367.3 m
With 75% Crew: 420.7 m
With 100% Crew: 474.5 m
With 100% Signal Boost: 546 m
When affected by 100% Relaying: 500.5 m
Maximum possible: 683 m

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


IV

annoSomua_Sau_40.png

110000

The Somua SAu 40 is a French tier 4 tank destroyer.

Un proyecto de AAP para apoyar a unidades mecanizadas ligeras. Se diseñó entre 1935 y 1937 a partir de los vehículos S35 y S40. El diseño presentaba la modificación de la parte superior del casco blindado con la casamata de 75 mm del cañón Mle 1929. La parte superior de la cabina presentaba una torreta con un solo asiento con la ametralladora 7,5-mm Mle 1931. Se solicitó la producción en serie del SAu 40 en octubre de 1939. Se envió al frente un prototipo (y de acuerdo con algunas fuentes históricas cuatro SAu 40 de producción) y se empleó en combate en junio de 1940.

Contrary to what the ingame description says, the SAu40 was developed as an SPG on the basis of the Somua S35 but was later converted to a tank destroyer, one prototype was built.

The SAu 40 is not the little tankette that its predecessor, the UE 57 was. Instead, it is a large, slow-moving warehouse and it may come with a steep learning curve if one is used to the playing style of the UE 57. To start with, it comes with an average 75mm short-barreled gun with decent damage for its tier but with poor accuracy and sub-par penetration. Once upgraded, it can equip an able 75 mm long-barreled gun that will take care of any foes up to its tier level, or a very powerful 105 mm howitzer able to destroy or cripple any higher tier tank that it may face, so using it before moving on to the next tier can be a rewarding experience. The SAu 40's frontal armor is not very good, even by Tier 4 standards, but the most glaring weakness is the small turret (also known as "The Tumor") on top, where it can be easily penetrated.

The Somua SAu 40 leads to the S35 CA, and the AMX 13 105 AM mle. 50.

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
(Creditos)

III 75 mm APX mle. 1938 68/92/38 110/110/175 15.79 0.45 1.7 1020 22360
V 75 mm AC SA44 100/129/38 110/110/175 15.79 0.41 1.7 1400 27000
V 105 mm AC court mle. 1934 S 53/104/38 410/350/175 7.06 0.53 2.3 1700 40700

Ico_engine_alpha.png

Engines

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

IV Somua S40 220 20 400 10420
V Somua S40 Bis 260 20 400 16100

Ico_suspension_alpha.png

Suspensions

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

III Somua SAu 40 24.5 28 0 5350 1660
IV Somua SAu 40 bis 26 30 0 5350 4760

Ico_radio_alpha.png

Radios

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

II ER 52 300 100 0
V ER 53 360 100 3650
VII ER 56 455 150 21600


Compatible Equipment

Sistema de extracción silencioso clase 3 Red de camuflaje clase 3 Ópticas recubiertas clase 3 Ópticas experimentales Cierre de retícula duradero Sistema de ventilación Cierre de retícula mejorado clase 3 Temple mejorado clase 3 Garras tractoras adicionales clase 3 Ventilación mejorada clase 3 Telescopio binocular clase 3 Turbocompresor clase 3 

Compatible Consumables

Extintor automático de incendios Cobertura natural Calibración de ópticas Cierre de retícula afinado Expertos en extinción de incendios Gasolina de 100 octanos Gasolina de 105 octanos Extintor manual de incendios Café fuerte Purga de gases Botiquín de primeros auxilios grande Kit de reparación grande El deber ante todo Organizador de proyectiles Enfoque en el objetivo Concentración aumentada Botiquín de primeros auxilios pequeño Kit de reparación pequeño Caja de cambios compleja Mano firme Curso de combate 


Player Opinion

Pros and Cons

Pros:


  • Short aim time on all guns
  • Good gun elevation and depression
  • Highest rate of fire and view range of any tier 4 TD offering a 105mm howitzer
  • Very fast shell velocity for a howitzer


Cons:


  • Fairly poor accuracy
  • Slowish
  • Poor hull traverse speed
  • Narrow gun traverse arc
  • Large, poorly armored turret on top, presenting a large weakspot and severely limiting hulldown capabilities


Performance

Compared to the tiny and fairly mobile Renault UE 57 that preceded it, the SAu-40 is a completely different machine. It is much slower and less mobile, has a far larger silhouette that is much more difficult to hide. In exchange, it gets thicker armour and more HP, as well as far more powerful armament. The 105 mm Canon de 105 court mle. 1934S AC deals massive damage, but requires patience and a window of opportunity to be used to its fullest. The 75 mm Long 44 AC, on the other hand, can just about penetrate Tier 5 or 6 tanks, and is somewhat more accurate than the 105 mm Canon de 105 court mle. 1934S AC.

The 105mm has higher accuracy than comparable guns and has a fairly high shell velocity for a howitzer.

Depending on the gun equipped, the SAu 40 can either play as a second-line support tank destroyer, or an ambusher. The inaccuracy of its weapons precludes using it as a sniper. The SAu 40's thin armour also precludes its use as a frontline tank destroyer. It plays similarly to the Hetzer, but is much larger, and has thinner armour.

A camouflage net would be a good choice of equipment, as the SAu-40 is quite sluggish to maneuver for relocation, allowing it to get as many shots off as possible before being spotted.


Early Research

  • The ER 53 and ER 56 radios carry over from the Renault UE 57. Install the ER 56 immediately.
  • Research the upgraded suspension first, as the additional weight capacity is required in order to upgrade the gun.
  • Next research the 75 mm Long 44 AC gun for much improved penetration.
  • Now research Somua S-40 Bis engine.
  • Go from there.


Suggested Equipment


Improved VentilationTank Gun Rammer Enhanced Gun Laying Drive Binocular Telescope Camouflage Net 


Gallery

Historical Info

Somua Sau-40 derived from the S35 medium tank chasis
In 1935 France started the development of the new self propelled gun \ tank destroyer vehicle. Two companies responded with proposals. Societé d'Outillage Mécanique et d'Usinage d'Artillerie (SOMUA) started work on a project that was to become the SOMUA SAu 40, and Atelier de Construction de Rueil (ARL)began developing its ARL 39V prototype.

Unlike the ARL V39, which was based on the BDR G1B tank, SOMUA derived the SAu 40 from the very promising S35 cavalry tank that proved to be the best tank in the French arsenal at the beginning of World War 2. The SOMUA SAu 40 prototype was to be finished and presented to the army in 1937. Unfortunately, since it shared the main gun with competing ARL V39, it had to wait for a full year for the both primary and secondary armament to be mounted. Main armament was to be the 75 mm APX gun, a modification of the mle. 1292 de Casemate gun originally developed for fortifications. The gun un had a semi-automatic breech, automatic shell rammer, and a very odd and unusual feature: it could be retracted inside the hull to decrease the vehicle's length. Secondary armament consisted of a 7.5 mm machine gun placed in a small turret on the roof, similar to the competing ARL project. The 75 mm gun APX 1929 gun was to have a traverse arc of 7 degrees to the left and 7.6 to the right with an excellent elevation arc from -10 to 30 degrees. Maximum effective range was to be 2000 m, with an ammunition capacity of 102 rounds. The sights were quite advanced for its time, and they offered 4x magnification, with a field of view of 125 degrees.

With tensions running high in Europe just prior to the outbreak of World War 2, France was desperate for any kind of modern armor, and the SOMUA SAu 40 was ordered into series production. An order for a total of 36 vehicles was placed. By 1 May 1940, 72 vehicles had been ordered, but only the prototype was armed with the 75 mm gun. The production vehicles were instead armed with the powerful 47 mm SA 37 anti-tank gun as tank destroyers. It is known that the prototype SAu 40 fought during the Battle for France in June 1940, probably along with a few production vehicles. The fall of France in June 1940 brought an end to all further development.


Historical Gallery

Sources and External Links

France
Light Tanks IRenault FT IID1 IIAM 39 Gendron-Somua IIAMR 35 IIFCM 36 IIRenault R35 IIHotchkiss H35 IIIAMX 38 IVAMX 40 VAMX ELC bis VIAMX 12 t VIPanhard AMD 178B VIIAMX 13 75 VIIHotchkiss EBR VIIAMX 13 57 VIIAMX 13 57 GF VIIIPanhard EBR 75 (FL 10) VIIIPanhard AML Lynx 6x6 VIIIBat.-Châtillon 12 t VIIIELC EVEN 90 IXAMX 13 90 IXPanhard EBR 90 XPanhard EBR 105 XAMX 13 105
Medium Tanks IIID2 IIISomua S35 IVSARL 42 VRenault G1 VIBretagne Panther VIM4A1 FL 10 VIIIBat.-Châtillon Bourrasque VIIIAltProto AMX 30 VIIILorraine 40 t VIIIAMX Chasseur de chars VIIIM4A1 Revalorisé IXAMX 30 1er prototipo IXChar Futur 4 IXBat.-Châtillon 25 t AP XBat.-Châtillon 25 t XAMX 30 B
Heavy Tanks IVB1 VBDR G1 B VIARL 44 VIIAMX M4 mle. 45 VIIIAMX 50 100 VIIIAMX M4 mle. 49 VIIIAMX M4 mle. 49 Liberté VIIIAMX 65 t VIIISomua SM VIIIFCM 50 t IXAMX 50 120 IXLorraine 50 t IXAMX M4 mle. 51 XAMX 50 B XAMX M4 mle. 54
Tank Destroyers IIRenault FT AC IIIFCM 36 Pak 40 IIIRenault UE 57 IVSomua SAu 40 VM10 RBFM VS35 CA VIARL V39 VIIAMX AC mle. 46 VIIIAMX AC mle. 48 VIIIAMX Canon d'assaut 105 IXAMX 50 Foch XAMX 50 Foch (155) XAMX 50 Foch B
Self-Propelled Artillery IIRenault FT 75 BS IIILorraine 39L AM IVAMX 105 AM mle. 47 VAMX 13 105 AM mle. 50 V105 leFH18B2 VIAMX 13 F3 AM VIILorraine 155 mle. 50 VIIILorraine 155 mle. 51 IXBat.-Châtillon 155 55 XBat.-Châtillon 155 58
Tank Destroyers
USA IIT3 HMC IIIT56 GMC IVM8A1 IVT40 VM10 Wolverine VT67 VIT78 VIM18 Hellcat VIM36 Jackson VIIM56 Scorpion VIIT28 Concept VIISuper Hellcat VIIT25/2 VIIT25 AT VIIITS-5 VIIIT28 VIIIT28 Prototype IXT30 IXT95 XT110E3 XT110E4
UK IIUniversal Carrier 2-pdr IVValentine AT IVAlecto VArcher VAT 2 VIChurchill Gun Carrier VIAchilles VIAT 8 VIExcalibur VIIChallenger VIIAT 15A VIIAT 7 VIIIGSOR 1008 VIIIAT 15 VIIICharioteer VIIITurtle Mk. I IXTortoise IXFV4004 Conway XFV215b (183) XFV4005 Stage II XFV217 Badger
Germany IIPanzerjäger I IIIMarder II IVStuG III Ausf. B IVPz.Sfl. IC IVJagdpanzer 38(t) Hetzer IVMarder 38T VStuG IV VPz.Sfl. IVc VStuG III Ausf. G VIDicker Max VIJagdpanzer IV VINashorn VIIE 25 VIIKrupp-Steyr Waffenträger VIIJagdpanther VIISturer Emil VIIIFerdinand VIIIKanonenjagdpanzer 105 VIIIRheinmetall Skorpion G VIIIRheinmetall Skorpion VIIIJagdpanther II VIII8,8 cm Pak 43 Jagdtiger VIIIRhm.-Borsig Waffenträger IXJagdtiger IXWaffenträger auf Pz. IV XGrille 15 XJagdpanzer E 100 XWaffenträger auf E 100
France IIRenault FT AC IIIFCM 36 Pak 40 IIIRenault UE 57 IVSomua SAu 40 VM10 RBFM VS35 CA VIARL V39 VIIAMX AC mle. 46 VIIIAMX AC mle. 48 VIIIAMX Canon d'assaut 105 IXAMX 50 Foch XAMX 50 Foch (155) XAMX 50 Foch B
USSR IIAT-1 IIISU-76I IVSU-85A IVSU-76M VSU-85 VSU-85I VISU-100 VISU-100Y VIIISU-122S VIISU-152 VIISU-100M1 VIISU-122-44 VIIIISU-152 VIIIISU-130 VIIIKV-4 KTTS VIIIT-103 VIIISU-130PM VIIIISU-152K VIIISU-101 IXK-91-PT IXObject 704 IXObject 263 XObject 268 XObject 268 Version V XObject 268 Version 4
China IIT-26G FT IIIM3G FT IVSU-76G FT V60G FT VIWZ-131G FT VIIT-34-2G FT VIIIWZ-111-1G FT VIIIWZ-120-1G FT IXWZ-111G FT IXWZ-120G FT XWZ-113G FT X114 SP2
Japan
Czechoslovakia VIIIShPTK-TVP 100
Sweden IIPvlvv fm/42 IIIIkv 72 IVSav m/43 VIkv 103 VIIkv 65 Alt II VIIIkv 90 Typ B VIIIUDES 03 VIIIStrv S1 IXStrv 103-0 XStrv 103B