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M40/M43

M40/M43

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M40/M43

AnnoA37_M40M43.png
USA | SPG | Tier VIII
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.
]
2,700,000  Credits Cost
40080 HP Hit Points
36.69/3720.98/39.5 t Weight Limit
Crew
  1. Commander
  2. Driver
  3. Gunner
  4. Radio Operator
  5. Loader
  6. Loader
Mobility
400500 hp Engine Power
38.6/10 km/h Speed Limit
2022 deg/s Traverse
10.923.83 hp/t Power/Wt Ratio
YesYes Pivot
Armor
// mm Hull Armor
Armament







{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||



{{#ifeq:ARMOR_PIERCING|ARMOR_PIERCING||


HE/HE







{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||



{{#ifeq:ARMOR_PIERCING|ARMOR_PIERCING||


HE/HE
 Shells




















1120/1320/1290




















1870/2310/2190
 Shell Cost
600/750/420900/1100/600 HP Damage
39/49/21852/65/272 mm Penetration



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1.94 r/m 
▲

Standard Gun

Reload Times
Nominal: 31 s
50% Crew: 38.4 s
75% Crew: 33.53 s
100% Crew: 29.72 s
Rammer: 26.75 s
Vents: 29.07 s
Both: 26.16 s
Both and BiA: 25.59 s
Both and Max Crew %: 24.53 s

See Crew, Consumables, or Equipment for more information.



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1.3 r/m 
▲

Standard Gun

Reload Times
Nominal: 46 s
50% Crew: 56.98 s
75% Crew: 49.76 s
100% Crew: 44.11 s
Rammer: 39.7 s
Vents: 43.14 s
Both: 38.82 s
Both and BiA: 37.98 s
Both and Max Crew %: 36.41 s

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






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1164
▲

Standard Gun

Using Shell Type 1 (600 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 1164
50% Crew: 942
75% Crew: 1074
100% Crew: 1212
100% Crew
Vents: 1242
Rammer: 1344
Both: 1380
Both and BiA: 1410
Both and Max Crew %: 1470

Advantageous Damage Per Minute
First-shot DPM: 1764
50% Crew: 1542
75% Crew: 1674
100% Crew: 1812
100% Crew
Rammer: 1944
Vents: 1842
Both: 1980
Both and BiA: 2010
Both and Max Crew %: 2070

See here, here, or here for more information.
▼

Standard Gun

Using Shell Type 2 (750 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 1455
50% Crew: 1177.5
75% Crew: 1342.5
100% Crew: 1515
100% Crew
Vents: 1552.5
Rammer: 1680
Both: 1725
Both and BiA: 1762.5
Both and Max Crew %: 1837.5

Advantageous Damage Per Minute
First-shot DPM: 2205
50% Crew: 1927.5
75% Crew: 2092.5
100% Crew: 2265
100% Crew
Rammer: 2430
Vents: 2302.5
Both: 2475
Both and BiA: 2512.5
Both and Max Crew %: 2587.5

See here, here, or here for more information.
▲

Standard Gun

Using Shell Type 3 (420 Damage):


Theoretical Damage Per Minute
Nominal DPM: 814.8
50% Crew: 659.4
75% Crew: 751.8
100% Crew: 848.4
100% Crew
Vents: 869.4
Rammer: 940.8
Both: 966
Both and BiA: 987
Both and Max Crew %: 1029

Advantageous Damage Per Minute
First-shot DPM: 1234.8
50% Crew: 1079.4
75% Crew: 1171.8
100% Crew: 1268.4
100% Crew
Rammer: 1360.8
Vents: 1289.4
Both: 1386
Both and BiA: 1407
Both and Max Crew %: 1449

See here, here, or here for more information.






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1170
▲

Standard Gun

Using Shell Type 1 (900 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 1170
50% Crew: 945
75% Crew: 1080
100% Crew: 1224
100% Crew
Vents: 1251
Rammer: 1359
Both: 1395
Both and BiA: 1422
Both and Max Crew %: 1485

Advantageous Damage Per Minute
First-shot DPM: 2070
50% Crew: 1845
75% Crew: 1980
100% Crew: 2124
100% Crew
Rammer: 2259
Vents: 2151
Both: 2295
Both and BiA: 2322
Both and Max Crew %: 2385

See here, here, or here for more information.
▼

Standard Gun

Using Shell Type 2 (1100 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 1430
50% Crew: 1155
75% Crew: 1320
100% Crew: 1496
100% Crew
Vents: 1529
Rammer: 1661
Both: 1705
Both and BiA: 1738
Both and Max Crew %: 1815

Advantageous Damage Per Minute
First-shot DPM: 2530
50% Crew: 2255
75% Crew: 2420
100% Crew: 2596
100% Crew
Rammer: 2761
Vents: 2629
Both: 2805
Both and BiA: 2838
Both and Max Crew %: 2915

See here, here, or here for more information.
▲

Standard Gun

Using Shell Type 3 (600 Damage):


Theoretical Damage Per Minute
Nominal DPM: 780
50% Crew: 630
75% Crew: 720
100% Crew: 816
100% Crew
Vents: 834
Rammer: 906
Both: 930
Both and BiA: 948
Both and Max Crew %: 990

Advantageous Damage Per Minute
First-shot DPM: 1380
50% Crew: 1230
75% Crew: 1320
100% Crew: 1416
100% Crew
Rammer: 1506
Vents: 1434
Both: 1530
Both and BiA: 1548
Both and Max Crew %: 1590

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


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0.65 m 
▲

With 50% Crew: 0.805 m
With 75% Crew: 0.703 m
With 100% Crew: 0.623 m
With BiA: 0.61 m
With BiA and Vents: 0.596 m
Maximum possible: 0.572 m

For more details, see Crew


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0.77 m 
▲

With 50% Crew: 0.954 m
With 75% Crew: 0.833 m
With 100% Crew: 0.738 m
With BiA: 0.722 m
With BiA and Vents: 0.706 m
Maximum possible: 0.677 m

For more details, see Crew
 Accuracy


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4.6 s 
▲

With 50% Crew: 5.698 s
With 75% Crew: 4.976 s
With 100% Crew: 4.411 s
With GLD: 4.01 s
With BiA: 4.313 s
With BiA and Vents: 4.22 s
With both and GLD: 3.836 s
Maximum possible: 3.677 s

For more details, see Crew or Equipment


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5.3 s 
▲

With 50% Crew: 6.566 s
With 75% Crew: 5.733 s
With 100% Crew: 5.082 s
With GLD: 4.62 s
With BiA: 4.97 s
With BiA and Vents: 4.862 s
With both and GLD: 4.42 s
Maximum possible: 4.237 s

For more details, see Crew or Equipment
 Aim time
1010 deg/s Gun Traverse Speed
36° Gun Arc
-5°/+55°-5°/+55° Elevation Arc
3016 rounds Ammo Capacity
General
2020 % Chance of Fire






290 m 
▲

With 50% Crew: 227.8 m
With 75% Crew: 259 m
With 100% Crew: 290 m
With Recon and Situational Awareness: 304.7 m
With Coated Optics: 319 m
With Binocular Telescope: 362.5 m
Maximum possible: 415.2 m

For more details, see Skills or Equipment






290 m 
▲

With 50% Crew: 227.8 m
With 75% Crew: 259 m
With 100% Crew: 290 m
With Recon and Situational Awareness: 304.7 m
With Coated Optics: 319 m
With Binocular Telescope: 362.5 m
Maximum possible: 415.2 m

For more details, see Skills or Equipment
 View Range


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325 m 
▲

With 50% Crew: 262.4 m
With 75% Crew: 300.5 m
With 100% Crew: 339 m
With 100% Signal Boost: 390 m
When affected by 100% Relaying: 357.5 m
Maximum possible: 487.9 m

For more details, see Skills or Equipment


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750 m 
▲

With 50% Crew: 605.4 m
With 75% Crew: 693.4 m
With 100% Crew: 782.2 m
With 100% Signal Boost: 900 m
When affected by 100% Relaying: 825 m
Maximum possible: 1125.9 m

For more details, see Skills or Equipment
 Signal Range
Values are Stock - click for Top
M12
M40/M43
M53/M55

Additional Statistics
(Top Configuration)

Camouflage

  • Stationary: 10.57%
  • When Moving: 5.43%
  • When Firing: 0.91%


Terrain Resistance

  • On Hard Ground: 1.25
  • On Medium Ground: 1.44
  • On Soft Ground: 2.4


Dispersion Change Values

  • Turret Contribution
  • Rotation: 0.61
  • Shot Recoil: 5.75
  • Suspension Contribution
  • Acceleration: 0.36
  • Turning: 0.36


With 100% Crew

VIII

AnnoA37_M40M43.png

2700000

The M40/M43 is an American tier 8 self-propelled gun.

Development started in the spring of 1944 due to a shortage of M1918 guns for the M12. The vehicle was based on the M4 Sherman and featured a HVSS-type suspension. The design allowed the 155-mm M1 gun and 203-mm M1 howitzer to be interchangeable (an SPG with the latter was designated the M43). The vehicle first saw service during Operation Zebra. A total of 418 M40 and 48 M43 vehicles were manufactured (another 24 M40s were reequipped).

The M40/M43 SPG was built on a widened and lengthened M4A3 medium tank chassis. The vehicle is designated as the M40 Gun Motor Carriage in a version that mounts the 155mm M1A1 "Long Tom" gun. The version that mounts the 8-inch (203mm) Howitzer is designated the M43 Howitzer Motor Carriage.

The M40/M43 leads to the M53/M55.

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)

VII 155 mm Gun M1A1 39/49/218 600/750/420 1.94 0.65 4.6 4352 96500
VIII 8-inch Howitzer M1 52/65/272 900/1100/600 1.3 0.77 5.3 4645 150000

Ico_engine_alpha.png

Engines

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

IV Wright Continental R-975C1 400 20 516 11000
V Wright Continental R-975C4 460 20 550 13900
VI Ford GAA early 500 20 708 29000

Ico_suspension_alpha.png

Suspensions

Tier Suspension Load Limit
(т) 		Traverse Speed
(gr/sec) 		Rmin Weight
(kg) 		Price
(Credits)

VII M40 37 20 0 15000 19070
VIII M43 39.5 22 0 15000 32000

Ico_radio_alpha.png

Radios

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

IV SCR 510 325 80 1980
VI SCR 610 420 100 24600
X SCR 619 750 80 54000

Compatible Equipment

Low Noise Exhaust System Class 1 Medium Spall Liner Camouflage Net Class 2 Coated Optics Class 1 Experimental Optics Wear-Resistant Gun Laying Drive Improved Configuration Innovative Loading System Enhanced Gun Laying Drive Class 1 Modified Configuration Class 1 Improved Rotation Mechanism Class 1 Binocular Telescope Class 1 Gun Rammer Class 1 Turbocharger Class 1 

Compatible Consumables

Automatic Fire Extinguisher Natural Cover Optical Calibration Case of Cola Aim Tuning Experienced Firefighters 100-octane Gasoline 105-octane Gasoline Manual Fire Extinguisher Pre-Battle Maintenance 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 Combat Course 


Player Opinion

Pros and Cons

Pros:


  • Gun range: stock: 1400 m, top: 1330 m
  • Relatively fast and mobile
  • Good horizontal gun arc
  • Good damage for its tier


Cons:


  • Mediocre accuracy and slow aim time (can be mitigated with a strong crew and premium food consumable)
  • Slow RoF
  • Low Camouflage Rating
  • Low vertical shell arc
  • Low ammo capacity


Performance

The M40/M43 has excellent mobility compared to the other hard hitters in tier 8, G.W. Tiger P. and SU-14-2. It is on the higher end for shell damage in its tier, with higher shell damage than the Lorraine 155 51 and FV207, tied with the SU-14-2 and only outclassed by the G.W. Tiger P. However, it has lower mobility than the Lorraine 155 51 and FV207. Due to its high damage combined with adequate accuracy, reload, and good mobility when fully kitted out, the M40/43 is arguably the best tier 8 artillery piece, and thus sees Clan Wars use during events with a tier 8 cap. Brothers in Arms and Snap Shot are highly recommended crew skills to train.


Early Research

  • Both upgrade engines and both upgrade radios carry over from the M12 if researched there.
  • The suspension upgrade is necessary to handle the weight of the top engine and gun.
  • Research the 8 in howitzer ASAP
  • Not necessarily tank research, but train "Brothers in Arms" and "Snap Shot" on your crew. these skills greatly help this artillery piece.


Suggested Equipment


Tank Gun Rammer Enhanced Gun Laying Drive Camouflage Net 


Gallery

Historical Info

M40 in the US Army Ordnance Museum

The 155 mm Gun Motor Carriage M40 was a US self-propelled artillery vehicle built on a widened and lengthened Medium Tank M4A3 chassis, but with a Continental engine and HVSS (Horizontal Volute Spring Suspension) that was introduced at the end of the Second World War. Equipped with a 155 mm M2 gun, it was designed to replace the earlier M12 Gun Motor Carriage. Its prototype designation was the T83, but this was changed to the M40 in March 1945.

A single pilot vehicle was used in the European Theatre in 1945 by the 991st Field Artillery Battalion, along with a related 8-inch Howitzer Motor Carriage T89, which was sometimes also equipped with a 155 mm barrel.[1] From there, it was deployed during the Korean War.

After World War II, the M40 was used by the British Army, who designated it the 155mm SP M40.


A version on the same chassis mounted an 8-inch (203 mm) howitzer and was designated the M43 Howitzer Motor Carriage. It was standardized in August 1945, 48 were built. The M43 saw action in the Korean War.

Variants

The Army planned to use the same T38 chassis for a family of SP artillery:

  • Cargo Carrier T30- a few built before cancellation in December 1944 to make more chassis' available for GMCs.
  • 8 inch Howitzer Motor Carriage M43- 8 in (203 mm) HMC, standardized August 1945, 48 were built.


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 • IIIMTLS-1G14 • IVM5 Stuart • VM24 Chaffee • VM7 • VIM24E2 Super Chaffee • VIT21 • VIT37 • VIIT71 CMCD • VIIT71 DA • VIIIT92 • VIIIM41 Walker Bulldog • IXT49 • XXM551 Sheridan
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Heavy Tanks VT14 • VT1 Heavy Tank • VIPawlack Tank • VIM6 • VIIKing Tiger (Captured) • VIIM-II-Y • VIIT29 • VIIIChrysler K • VIIIChrysler K GF • VIIIT26E5 • VIIIT26E5 Patriot • VIIIM54 Renegade • VIIIT77 • VIIIM-III-Y • VIIIM-IV-Y • VIIIM6A2E1 • VIIIT32 • VIIIT34 • VIIIT34 B • IXAE Phase I • IXConcept 1B • IXM-VI-Y • IXM103 • IXT54E1 • XM-V-Y • XT110E5 • XT57 Heavy Tank
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Self-Propelled Artillery IIT1 HMC • IIIT18 HMC • IIIM7 Priest • IVT82 HMC • IVM37 • VM41 HMC • VIM44 • VIIM12 • VIIIM40/M43 • IXM53/M55 • XT92 HMC
Self-Propelled Guns
USA IIT1 HMC • IIIT18 HMC • IIIM7 Priest • IVT82 HMC • IVM37 • VM41 HMC • VIM44 • VIIM12 • VIIIM40/M43 • IXM53/M55 • XT92 HMC
UK IILoyd Gun Carriage • IIISexton II • IIISexton I • IVBirch Gun • VBishop • VIFV304 • VIICrusader 5.5-in. SP • VIIIFV207 • IXFV3805 • XConqueror Gun Carriage
Germany IIG.Pz. Mk. VI (e) • IIISturmpanzer I Bison • IIIWespe • IVPz.Sfl. IVb • IVSturmpanzer II • VGrille • VIHummel • VIIG.W. Panther • VIIIG.W. Tiger (P) • IXG.W. Tiger • XG.W. E 100
France 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
USSR IISU-18 • IIISU-26 • IVSU-5 • VSU-122A • VISU-8 • VIIS-51 • VIISU-14-1 • VIIISU-14-2 • IX212A • XObject 261
China
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ja:Tank:A37 M40M43
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