M18 90-mm Gun Motor Carriage

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Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator

General info

M18 Super Hellcat in the garage.

The M18 90-mm Gun Motor Carriage (or the M18 Super Hellcat) is a premium Rank IV American tank destroyer with the battle rating of 6.3. It was introduced in Update 1.51 "Cold Steel". It is similar to the Rank III M18 Hellcat, only using the M36 GMC turret to mount the 90 mm gun with a minimal decrease in top speed.

The main purpose, usage and tactics recommendations

General play style

The M18 "Super Hellcat" should be very familiar to those who play the M18 Hellcat. It is very fast, equipped with a hard-hitting cannon, but at a cost of armour. Thus, the M18 Super Hellcat is a mobile hit-and-run vehicle, popping out from behind a cover and blasting the enemy with a shot before retreating. Change up the firing location often to avoid being hit if someone has your previous firing location targeted. The Hellcat won't hold the line by standing and absorbing shots, but it can if you pick off each attacker one by one like a sniper.

The main focus of gaining the Super Hellcat is the 90mm upgrade; and it is absolutely beautiful. The main round you are recommended to use well be the M82 APCBC round, the reason being well get you one shot kill quite often. The M82 has enough penetration to penetrate a Tiger I through the front plate.

Vehicle characteristics

Tactics

In an offensive and defensive position, the Hellcat should still remain behind cover and be constantly changing firing positions. Once you fire a shot, retreat back to cover and wait out until you fully reload the next round. In an offense, pop out from the cover occasionally and snipe at your enemy. In a defense, remain behind cover and catch the enemy off guard as they approach by letting them shoot a different target first and hit them while they are reloading. Another way is to let them move right into your line of sight, which should at best expose their sides to you, allowing for a one shot kill if you can land a M82 APCBC round into them.

A more aggressive play style is as a flanker and a point-capturer. The Hellcat's great speed can allow it to get around an enemy concentration and shoot them on the sides while they are focused at your allies in front of them. They may eventually catch on to Hellcat's presence, and the Hellcat should take a more conservative action by returning back to the shoot-and-scoot tactic behind cover. The Hellcat's speed can also be used to rush towards the point. Though not recommended due to exposing the Hellcat's to enemy fire, the speed can ensure the Hellcat will be the first on the point, with a 90mm gun to defend itself. If lucky, the enemy team is too slow and the Hellcat will capture the point. If unlucky, the enemy will swarm the point, outnumber and constrict the Hellcat and destroy it. Thus it is not recommended to play as a point-capturer.

Specific enemies worth noting

With good shots, you can hit the cheeks of a Tiger II (P). Penetrating the Panther series (up to the Panther II) will require a clean shot to the mantlet and for the Panther II, a hit the flat of the turret. Same principles apply on Soviet mediums like the T-44, hit the cheeks and turret ring. For Soviet heavy tanks, hit the lower glacis or the turret cheeks. Using the standard AP shot as a primary round isn't recommended as the fragmentation is minimal, same goes for APCR, which should be used only on the toughest enemies. Despite that, AP is useful against some enemies like the Tiger II (H) as the regular APCBC can penetrate the flat sides of the turret front. Use AP if you have a flat shot on the flat part of Tiger 2H turret as it cant be penned by APCBC but if the turret is angled even a little AP well bounce so then use APCR same on Russian heavy tanks. Little hint when using AP or APCR on German/ Russian heavy tanks aim for the right side to hit the Aimer and commander give you those precious seconds to escape. AP and APCR isn't recommended to shoot the angled front plates of the German panther and tiger 2's as the angle is steep enough to absorb the shot unless your hugging the front of a panther. The reload with a max reloading skill is 9.5 seconds which gives it a decent rate of fire. The only other armament on the TD is a single M2 Browning which is used for AA purposes and overwhelming fire on AAA.

Counter-tactics

Pros and cons

Pros:

  • Fantastic 90 mm gun with a very lethal M82 APCBC round.
  • Pintle .50 cal machine gun is effective for anti-air purposes.
  • Fast Hellcat speed, forward and backward.
  • Great mobility

Cons:

  • Paper-thin armour.
  • Hull-breakable vehicle.
  • Exposed crew, watch out for machine gun and artillery.
  • A penetrating round, even if inflicting minimum crew damages, have high chance of disabling the transmission or engine.
  • Ammunition always stored in hull sides.

Specifications

Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator

Armaments

1 x 90 mm Gun M3 (45 rounds)
1 x 12.7 mm M2HB heavy machine gun (800 rounds)

Main armament

1 x 90 mm Gun M3
  • Ammunition Capacity: 45 Shells
  • Gun Depression: -10°
  • Gun Elevation: 20°
  • Turret Rotation Speed: 14.28°/s (Stock), 19.8°/s (Upgraded), 24°/s (Prior + Full Crew), 26.6°/s (Prior + Expert Qualif.), 28.2°/s (Prior + Ace Qualif.)
  • Reloading Rate: 11.05s (Stock), 9.78s (Full Crew), 9s (Prior + Expert Qualif.), 8.5s (Prior + Ace Qualif.)
1 x 90 mm Gun M3
  • Ammunition Capacity: 45 Shells
  • Gun Depression: -10°
  • Gun Elevation: 20°
  • Turret Rotation Speed: 14.28°/s (Stock), 16.8°/s (Upgraded), 20.4°/s (Prior + Full Crew), 22.6°/s (Prior + Expert Qualif.), 24°/s (Prior + Ace Qualif.)
  • Reloading Rate: 11.05s (Stock), 9.78s (Full Crew), 9s (Prior + Expert Qualif.), 8.5s (Prior + Ace Qualif.)
1 x 90 mm Gun M3
  • Ammunition Capacity: 45 Shells
  • Gun Depression: -10°
  • Gun Elevation: 20°
  • Turret Rotation Speed: 14.28°/s (Stock), 16.8°/s (Upgraded), 20.4°/s (Prior + Full Crew), 22.6°/s (Prior + Expert Qualif.), 24°/s (Prior + Ace Qualif.)
  • Reloading Rate: 11.05s (Stock), 9.78s (Full Crew), 9s (Prior + Expert Qualif.), 8.5s (Prior + Ace Qualif.)
Ammunition
Ammunition Penetration in mm @ 90° Type of
warhead
Velocity
in m/s
Projectile
Mass in kg
Fuse delay in m: Fuse sensitivity in mm: Explosive Mass in
TNT equivalent
in g:
Normalization At 30° from horizontal: Ricochet:
10m 100m 500m 1000m 1500m 2000m 0% 50% 100%
T33 shot 189 188 163 137 115 96 AP 822 11 N/A N/A N/A -1° 47° 60° 65°
M71 shell 13 13 13 13 13 13 HE 823 11 0.1 0.5 925 +0° 79° 80° 81°
M82 shot 165 164 150 137 125 114 APCBC 807 11 1.2 20 137.2 +4° 48° 63° 71°
M304 shot 264 260 245 226 210 191 APCR 1021 7.6 N/A N/A N/A +1.5° 66° 70° 72°
Ammo racks
Ammo racks of the Super Hellcat.
Full
ammo
1st
rack empty
2nd
rack empty
3rd
rack empty
4th
rack empty
5th
rack empty
6th
rack empty
7th
rack empty
8th
rack empty
Recommendations Visual
discrepancy
45 40 (+5) 34 (+11) 28 (+17) 22 (+23) 16 (+29) 11 (+34) (+39) (+44) Turret empty: 34 (+11) Yes

Secondary armament

1 x 12.7 mm M2HB heavy machine gun (pintle mount)

Crew

  • Commander
  • Gunner
  • Loader
  • Driver
  • Assistant Driver

Total: 5 Crew members

Armour

Armour type:

  • Rolled homogeneous armour
  • Cast homogeneous armour (Gun mantlet)
Armour Front (Slope angle) Sides Rear Roof
Hull 12.7 mm (63°) 12.7 mm 12.7 mm 8.0 mm
Turret 31.75 mm Turret front
76.2 mm Gun mantlet
31.75 mm 25.4 mm N/A

Notes:

  • Suspension wheels and tracks are 15 mm thick.

Engine & mobility

Weight: 22.0 ton

Max Speed: 79 km/h
Stock

  • Engine Power: 653 hp @ 2400 rpm
  • Power-to-Weight Ratio: 29.68 hp/ton
  • Maximum Inclination: 32°

Upgraded

  • Engine Power: 804 hp @ 2400 rpm
  • Power-to-Weight Ratio: 36.54 hp/ton
  • Maximum Inclination: 41°
Weight: 22.0 ton

Max Speed: 72 km/h
Stock

  • Engine Power: 407 hp @ 2400 rpm
  • Power-to-Weight Ratio: 18.50 hp/ton
  • Maximum Inclination: 35°

Upgraded

  • Engine Power: 460 hp @ 2400 rpm
  • Power-to-Weight Ratio: 20.91 hp/ton
  • Maximum Inclination: 40°
Weight: 22.0 ton

Max Speed: 72 km/h
Stock

  • Engine Power: 407 hp @ 2400 rpm
  • Power-to-Weight Ratio: 18.50 hp/ton
  • Maximum Inclination: 35°

Upgraded

  • Engine Power: 460 hp @ 2400 rpm
  • Power-to-Weight Ratio: 20.91 hp/ton
  • Maximum Inclination: 40°

Modules and improvements

History of creation and combat usage

Development

During World War II, the M18 "Hellcat" tank destroyer was very effective in its role in American service. Despite that, an attempt to upgrade the vehicle with a better gun took effect around 1944. Instead of the 76 mm gun that it originally had, it would take the 90 mm gun that was going into service at the time.

The attempt to construct this focused on the turret to mount the heavier and larger gun. The M18's turret was then replaced with the turret from the M36 GMC to mount the 90 mm gun. Testings with this variant showed that the installment of the new turret did not hinder the speed performance of the M18, but the recoil of the 90 mm gun would cause the tank to bounce back heavily when fired, going back by at least 2 feet even with the muzzle brake attached on the 90 mm gun. The recoil force would also shake the entire tank hull and crew inside. The modified M18 mounting the 90 mm gun was nicknamed the "Super" Hellcat

Testing and cancellation

Despite the drawbacks, it was deemed an acceptable vehicle to use in the battlefield. The 90 mm gun would provide a very large firepower advantage over the 76 mm gun the M18 had originally, which could not penetrate the front of the Panther tank unless in close range with HVAP ammo. The 90 mm could take out most of the late war German tank designs with ease. However, the war ended before the "Super" Hellcat could be deployed for combat use, and the project was cancelled along with the disbanding of the tank destroyer doctrine.

Screenshots and fan art

Skins and camouflages for the M18 Hellcat series from live.warthunder

Additional information (links)

[Devblog] T-34-100 and SuperHellcat

References


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us_m18_super_hellcat.png

Icon-country-usa.png M18 Super Hellcat
Nation USA
Type Tank destroyer
Rank 4
Battle Rating
6.3
6.3
6.3

   Metric✓       Imperial   

   Metric       Imperial✓   

Characteristics
Weight
22,000 kg
48,502 lb
Number of Crew 5
Hull armour thickness
12.7/12.7/12.7/8.0 mm
0.5/0.5/0.5/0.31 inches
Statistics
Engine power (stock)
653 hp
407 hp
407 hp
Engine power (upgraded)
804 hp
460 hp
460 hp
HP/ton ratio (stock)
29.68
30.16
18.50
18.80
18.50
18.80
HP/ton ratio (Upgraded)
36.54
37.13
20.91
21.24
20.91
21.24
Max speed
79 km/h
49 mph
72 km/h
45 mph
72 km/h
45 mph
Main Weapon
1 x 90 mm M3 Cannon
Ammo stowage 45 rounds
Vertical guidance -10°/20°
Secondary Weapon
1 x 12.7 mm M2HB Heavy machine gun
Ammo stowage 800 rounds
Mount Pintle mount
Vertical guidance -10°/70°
Horizontal guidance -60°/60°
Economy
Required RP N/A
Vehicle cost 7,480 GE
Crew training cost 10,000 SL
Max repair cost*
1,400 SL
3,060 SL
3,640 SL
Free repair time (Stock)
2d 01h
4d 12h
4d 12h
Free repair time (Upgraded)
16h 23m
1d 12h
1d 12h
Warning: this sidebar is a WIP, and can be incorrect. Last updated 1.77.2.170.