M103

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M103

Icon
USA Heavy Tank Tier IX
Battle Tiers
123456789101112
Totals
Cost 3,640,000  Credits
Hit Points 1,7501,850 HP
Weight Limit 54.4/57.556.689/62.5 t
Crew
Commander (Radio Operator)
Gunner
Driver
Loader
Loader
Mobility
Engine Power 810860 hp
Speed Limit 34/12 km/h
Traverse 2628 deg/s
Power/Wt Ratio 14.8915.17 hp/t
Pivot YesYes
Armor
Hull Armor 203/51/38 mm
Turret Armor127/127/51127/127/51 mm
Armament
Damage 240-400300-500 HP
Penetration 149-248202-336 mm
Rate of Fire
6.12100% crew: 6.38 rpm
+ Vents: 6.53 rpm
+ BiA : 6.67 rpm
+ Food: 6.96 rpm
5.36100% crew: 5.59 rpm
+ Vents: 5.71 rpm
+ BiA : 5.84 rpm
+ Food: 6.09 rpm
r/m
Accuracy
0.4100% crew: 0.38 m
+ Vents: 0.38 m
+ BiA : 0.37 m
+ Food: 0.35 m
0.37100% crew: 0.35 m
+ Vents: 0.35 m
+ BiA : 0.34 m
+ Food: 0.33 m
m
Aim time
2.3100% crew: 2.21 s
+ Vents: 2.16 s
+ BiA : 2.11 s
+ Food: 2.02 s
2.3100% crew: 2.21 s
+ Vents: 2.16 s
+ BiA : 2.11 s
+ Food: 2.02 s
s
Turret Traverse
32100% crew: 33.37 deg/s
+ Vents: 34.13 deg/s
+ BiA : 34.88 deg/s
+ Food: 36.39 deg/s
32100% crew: 33.37 deg/s
+ Vents: 34.13 deg/s
+ BiA : 34.88 deg/s
+ Food: 36.39 deg/s
deg/s
Gun Arc 360°
Elevation Arc -8°/+15°-8°/+15°
Ammo Capacity 6033 rounds
General
Chance of Fire 2020 %
View Range
370100% crew: 370 m
+ Vents: 377.93 m
+ BiA : 385.86 m
+ Food: 401.71 m
390100% crew: 390 m
+ Vents: 398.36 m
+ BiA : 406.71 m
+ Food: 423.43 m
m
Signal Range
410100% crew: 427.57 m
+ Vents: 437.24 m
+ BiA : 446.9 m
+ Food: 466.23 m
745100% crew: 776.93 m
+ Vents: 794.49 m
+ BiA : 812.05 m
+ Food: 847.17 m
m
Parent Contour-USA-T32.png
Child
Contour-USA-T110.png185,000 XP
Research
RT-USA-M103.jpg
Values are Stock - click for Top
USA-M103.png

The M103 is an American tier 9 heavy tank.

The development started in 1948. In 1952 the order was placed for production of 300 vehicles to fight in the Korean War. The tank was designated as M103.

It replaced the T34 as the tier 9 heavy in patch 0.7.2. The fully upgraded 120mm cannon is a fantastic gun, with great accuracy, and very high penetration. While it lacks alpha damage compared to the IS-8 or E-75, the gun's reload speed makes up for its lack of damage. The M103's oddly shaped hull and well-sloped turret can make this tank a bit tricky to fight, especially at long ranges; however, this tank suffers from having very weak sides and rear armor. When fighting this tank from the front, make sure you try and hit the lower armor plating as hitting the upper hull will most likely bounce. The speed and maneuverability of this tank are quite good, so it's able to keep up with the rest of the team and provide excellent fire support when needed, and is able to turn its frontal hull towards the enemy quickly to reduce damage taken from incoming fire.

The M103 leads to the T110E5.


















Modules

Turret
TierNameArmorTraverse SpeedTraverse ArcView RangeXP CostPriceWeight
08VIII M89 0127 127/127/51 mm
32100% crew: 33.37 deg/s
+ Vents: 34.13 deg/s
+ BiA : 34.88 deg/s
+ Food: 36.39 deg/s
32100% crew: 33.37 deg/s
+ Vents: 34.13 deg/s
+ BiA : 34.88 deg/s
+ Food: 36.39 deg/s
d/s
360°
370100% crew: 370 m
+ Vents: 377.93 m
+ BiA : 385.86 m
+ Food: 401.71 m
370100% crew: 370 m
+ Vents: 377.93 m
+ BiA : 385.86 m
+ Food: 401.71 m
m
0------ 43,50043,500 Credits 12,000 12,000 kg
Guns compatible with this Turret:
Gun
TierNameAmmoDamagePenetrationShell PriceRate of FireAccuracyAim TimeElevationXP CostPriceWeight
08VIII 105 mm Gun T5E1 60 320/320/420 HP 198/245/53 mm 1,000 Credits/12 Gold/680 Credits
6.12100% crew: 6.38 rpm
+ Vents: 6.53 rpm
+ BiA : 6.67 rpm
+ Food: 6.96 rpm
r/m
0.4100% crew: 0.38 m
+ Vents: 0.38 m
+ BiA : 0.37 m
+ Food: 0.35 m
m
2.3100% crew: 2.21 s
+ Vents: 2.16 s
+ BiA : 2.11 s
+ Food: 2.02 s
s
-8°/+15° --- 118,000118,000 Credits 2,400 2,400 kg
09IX 120 mm Gun T122 33 400/400/515 HP 242/340/60 mm 1,060 Credits/11 Gold/900 Credits
5.26100% crew: 5.49 rpm
+ Vents: 5.61 rpm
+ BiA : 5.74 rpm
+ Food: 5.98 rpm
r/m
0.4100% crew: 0.38 m
+ Vents: 0.38 m
+ BiA : 0.37 m
+ Food: 0.35 m
m
2.6100% crew: 2.49 s
+ Vents: 2.44 s
+ BiA : 2.39 s
+ Food: 2.29 s
s
-8°/+15° 25,000 230,000230,000 Credits 2,790 2,790 kg

Turret
TierNameArmorTraverse SpeedTraverse ArcView RangeXP CostPriceWeight
09IX T140 0127 127/127/51 mm
32100% crew: 33.37 deg/s
+ Vents: 34.13 deg/s
+ BiA : 34.88 deg/s
+ Food: 36.39 deg/s
32100% crew: 33.37 deg/s
+ Vents: 34.13 deg/s
+ BiA : 34.88 deg/s
+ Food: 36.39 deg/s
d/s
360°
390100% crew: 390 m
+ Vents: 398.36 m
+ BiA : 406.71 m
+ Food: 423.43 m
390100% crew: 390 m
+ Vents: 398.36 m
+ BiA : 406.71 m
+ Food: 423.43 m
m
23,00023,000 55,00055,000 Credits 13,600 13,600 kg
Guns compatible with this Turret:
Gun
TierNameAmmoDamagePenetrationShell PriceRate of FireAccuracyAim TimeElevationXP CostPriceWeight
08VIII 105 mm Gun T5E1 60 320/320/420 HP 198/245/53 mm 1,000 Credits/12 Gold/680 Credits
6.12100% crew: 6.38 rpm
+ Vents: 6.53 rpm
+ BiA : 6.67 rpm
+ Food: 6.96 rpm
r/m
0.4100% crew: 0.38 m
+ Vents: 0.38 m
+ BiA : 0.37 m
+ Food: 0.35 m
m
2.3100% crew: 2.21 s
+ Vents: 2.16 s
+ BiA : 2.11 s
+ Food: 2.02 s
s
-8°/+15° --- 118,000118,000 Credits 2,400 2,400 kg
09IX 120 mm Gun T122 33 400/400/515 HP 242/340/60 mm 1,060 Credits/11 Gold/900 Credits
5.26100% crew: 5.49 rpm
+ Vents: 5.61 rpm
+ BiA : 5.74 rpm
+ Food: 5.98 rpm
r/m
0.4100% crew: 0.38 m
+ Vents: 0.38 m
+ BiA : 0.37 m
+ Food: 0.35 m
m
2.6100% crew: 2.49 s
+ Vents: 2.44 s
+ BiA : 2.39 s
+ Food: 2.29 s
s
-8°/+15° 25,000 230,000230,000 Credits 2,790 2,790 kg
10X 120 mm Gun M58 33 400/400/515 HP 258/340/60 mm 1,060 Credits/11 Gold/900 Credits
5.36100% crew: 5.59 rpm
+ Vents: 5.71 rpm
+ BiA : 5.84 rpm
+ Food: 6.09 rpm
r/m
0.37100% crew: 0.35 m
+ Vents: 0.35 m
+ BiA : 0.34 m
+ Food: 0.33 m
m
2.3100% crew: 2.21 s
+ Vents: 2.16 s
+ BiA : 2.11 s
+ Food: 2.02 s
s
-8°/+15° 60,000 310,000310,000 Credits 3,100 3,100 kg

Engine
TierNamePowerFire ChanceTypeXP CostPriceWeight
09IX Continental AV-1790-5B 0810 810 hp 020 20 % Gasoline --- 80,00080,000 Credits 0569 569 kg
10X Continental AV-1790-7C 0860 860 hp 020 20 % Gasoline 45,000 100,000100,000 Credits 0569 569 kg

Suspension
TierNameLoad LimitTraverse SpeedXP CostPriceWeight
08VIII T97E1 57.557.5 t 02626 d/s ------ 31,50031,500 Credits 8,000 8,000 kg
09IX T97E2 62.562.5 t 02828 d/s 24,30024,300 61,50061,500 Credits 8,000 8,000 kg

Radio
TierNameRangeXP CostPriceWeight
06VI AN/GRC-3
410100% crew: 427.57 m
+ Vents: 437.24 m
+ BiA : 446.9 m
+ Food: 466.23 m
410100% crew: 427.57 m
+ Vents: 437.24 m
+ BiA : 446.9 m
+ Food: 466.23 m
m
0--- --- 21,60021,600 Credits 0120 120 kg
10X AN/GRC-7
745100% crew: 776.93 m
+ Vents: 794.09 m
+ BiA : 812.05 m
+ Food: 847.17 m
745100% crew: 776.93 m
+ Vents: 794.09 m
+ BiA : 812.05 m
+ Food: 847.17 m
m
9,000 9,000 54,00054,000 Credits 0120 120 kg

Historical Info

The M103 heavy tank served the United States Army and the US Marines during the Cold War. Until the development of the M1 Abrams in the mid-1970s, it was the heaviest and most heavily armed tank in US service. The M103 was manufactured at the Detroit Arsenal Tank Plant and the first units were accepted in 1957. The last M103s were withdrawn from service in 1974.

Design and Development

Like the contemporary British Conqueror tank, the M103 was designed to counter Soviet heavies such as the Josef Stalin tank or the T-10 if a conventional World War III broke out. Its long-ranged 120 mm cannon was designed to hit enemy tanks at extreme distances, but it was never used in combat. In 1953-1954 a series of 300 tanks, initially designated T43E1, were built by Chrysler at the Newark plant. Testing was unsatisfactory, and the tanks were all stored in August 1955. Only after recommending improvements, on 26 April 1956 the tank was standardized as the M103 Heavy Tank. Of the 300 T43E1s built, 80 went to the US Army (74 of which were rebuilt to M103 standard), and 220 were accepted by the US Marine Corps, to be used as infantry support, rebuilt to improved M103A1, then M103A2 standards. The successive versions of the M103 shared many components with the M47 and M48 Patton tanks and the M60, which, with the exception of the M60 (a main battle tank) were all considered 90 mm gun (medium) tanks. Tracks, rollers and suspension elements were the same, with some modification to take into account the greater weight. The engine and transmission were never modified enough to give the extra power needed for the greater weight of the M103, and as a result, the tank was relatively underpowered and the drive systems were fragile. The turret of the M103 was larger than that of the M48 or the M60 to make room for the huge 120 mm gun and the two loaders assigned to it, in addition to the gunner and the commander. The driver sat in the hull. The gun was capable of elevation from +15 to -8 degrees. The armor is made from welded rolled and cast homogeneous steel of varying thickness.

  • Hull front: 100–130 mm (4.0–5.3 in)
  • Hull side: 76 mm (3.1 in)
  • Hull top: 25 mm (1 in)
  • Turret mantlet: 250 mm (10.2 in)
  • Turret front: 180 mm (7.3 in)
  • Turret side: 76 mm (3.1 in)
  • Turret top: 38 mm (1.5 in)

Service

In Europe, the US Army fielded only one battalion of heavy tanks, from January 1958, originally assigned to the 899th Armor, later redesignated the 2/33rd Armor. The US Army heavy armor battalion, in contrast to other armor units, was organized into four tank companies, composed of six platoons each, of which each platoon contained three M103's, for a total of 18 tanks per company. Standard US Army armor battalions at the time had three companies per battalion, each with three five-tank platoons, with 17 tanks per company (two tanks were in headquarters platoon). The US Marine Corps assigned one M103 company to each of its 3 Marine tank battalions, including its Marine reserve units. While the US Army deactivated its heavy armor units with the reception of the new M60 series main battle tanks in 1963, the remaining M103s stayed within the US Marine Corps inventory until they began receiving the M60 series MBT. With the disappearance of the heavy tank from US forces came the full acceptance of the main battle tank in 1960 for the US Army, and 1973 for the US Marine Corps. Although the 21st century's M1 Abrams MBT utilizes the same caliber of main gun, the 120 mm, the M103's cannon was a rifled gun firing a fixed round, ejecting a lengthy brass shell casing (34.69 inches in length for the armor-piercing rounds). The M1 tank's 120 mm main gun is a smooth bore (no rifling) firing a semi-caseless round, ejecting only a back cap of the original loaded round; the bulk of the 120 mm shell's casing is consumed during firing. Ammunition fired by the M103's M58 cannon included:

  • APBC-T M358 Shot
  • HEAT-T M469 Shell
  • HE-T M356 Shell
  • TP-T M359E2 Shot

Variants

  • T43E1 1953. 300 built.
  • M103 1957. 74 converted.
  • M103A1 1959. 219 converted or rebuilt. New sight (Stereoscopic T52) and T33 ballistic computer. Removed one coaxial machine gun. New turret electric amplidyne system traverse. Turret basket.
  • M103A2 1964. 153 converted or rebuilt. New 750 hp (559 kW) diesel engine from the M60 tank, increasing the road range to 480 km and maximum speed to 37 km/h. New sight coincidence XM2A.


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