M18 Gun Motor Carriage "Black Cat"

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Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator

General info

M18 Black Cat in the garage.

The M18 Black Cat is a gift Rank III American tank destroyer with a battle rating of 4.7 (AB/SB) and 5.3 (RB). It was introduced in Update 1.49 "Weapons of Victory". The M18 "Black Cat" is a gift version of the M18 Hellcat, with little difference in performance. It costs $22.99 in the Gaijin Store.

The main purpose, usage and tactics recommendations

General play style

M18 GMC compensates the lack of anti-tank capability of U.S vehicles.

M4, M4A1 and M4A2 are unable to deal with German Tiger, Panther D or Russian KV-1 L11, KV-1 ZiS-5 or KV-85 but the Hellcat can. The difference between other nation's tank destroyers is that the M18 has a 360° mobile turret, allowing a more flexible firing angle.

Americans tank destroyers bet for high maneuverability for flanking enemy. Faster means lighter, and lighter means less armour. The main weak point of M18 is its paper thin armour, so everybody can penetrate the armour and hit critical components or kill crew. This weakness is badly exploited by inexpert players by using the wrong ammo.

APCR will over pen and not cause relevant damage on the M18. So using HE or HEAT assures a kill or critical damage.

Vehicle characteristics

Tactics

Before all, avoid colorful or bright decals. Camouflage is a main part of the M18's defense. Chances for good performance in battle are: be "invisible", fast and effective. The M18's speed is its best ally. This speed has to be used for flanking maneuvers and relocate. Not for trying to cross open field, that will leave it open to enemy fire, speed is not a substitute for armour.

Relocate: This movement will have to be done again and again. Choose a good spot wisely, remove the foliage if necessary to get a clear field of fire. When in the fire spot, use the gun depression and stay in a hull down position until a target is located. Once a target is locked on, aim at critical components. Try to immobilize the enemy by firing at the engine or transmission, or remove their firepower by shooting the gun or breech, or for an instant destruction with an aim at the ammo storage. The last option can work very well or not, as skilled players only carry a few rounds of ammo.

If positive that the enemy hasn´t discovered the firing spot, go for another shot. Stay attentive that none of the enemy's teammates have also located the firing spot. If detected, hide immediately and relocate.

Flanking: Flanking is the most dangerous maneuver of all because the vehicle will have to be exposed as it moves to the enemy's rear, but it is very effective when it's coordinated with other vehicles. A distraction is needed to gain the enemy's attention while the M18 makes its move. Isolated enemy units are very vulnerable to this tactic. Using the M18 speed to get to the rear and as the enemy heads toward the objective, the firing perspective should give a very clear view of the enemy's side armour. A good shot with the M62 APCBC shell could knock out the enemy rather quickly, but if using solid AP shots like the M79, aim at critical components on mobility and firepower before knocking out the crew or ammo stowage.

Avoid flat terrain: Flat terrain means that the Hellcat will become an easy target for virtually any vehicle by exposure, especially when not moving or when moving in a straight line. Open plains are the death of the Hellcat. Whenever possible, one should try to stay amongst hills.

Specific enemies worth noting

Counter-tactics

Pros and cons

Pros:

  • Fast.
  • Low profile.
  • APCR shell has great penetration
  • Good power to weight ratio.
  • Effective 76 mm Gun.
  • Very fast reverse.
  • Fast turret rotation speed.
  • Fast reload speed.
  • If hit by high-penetrating AP rounds, it may just pass through the thin armour with minimum damage internally
  • Front armour can cause shells to ricochet off.

Cons:

  • Weak armour. This can be easily penetrated by heavy machine guns and aircraft weapons.
  • Commander mans the .50 cal therefore is exposed.
  • Stock shells are inadequate against heavily armoured foes.
  • A damaged/disabled engine leaves the vehicle a sitting target.
  • SPAAs can destroy the M18 really quickly.
  • Open top which exposes the crew to machine gun fire and shrapnel.
  • Very vulnerable to artillery barrages.
  • Prone to HE and HEAT shells.

Specifications

Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator

Armaments

1 x 76 mm Gun M1A2 (45 rounds)
1 x 12.7 mm M2HB heavy machine gun (800 rounds)

Main armament

1 x 76 mm Gun M1
  • Ammunition Capacity: 45 Shells
  • Gun Depression: -10°
  • Gun Elevation: 20°
  • Turret Rotation Speed: 14.3°/s (Stock), 19.8°/s (Upgraded), __._°/s (Prior + Full Crew), __._°/s (Prior + Expert Qualif.), __._°/s (Prior + Ace Qualif.)
  • Reloading Rate: 7.9s (Stock), __._s (Full Crew), __._s (Prior + Expert Qualif.), __._s (Prior + Ace Qualif.)
1 x 76 mm Gun M1
  • Ammunition Capacity: 45 Shells
  • Gun Depression: -10°
  • Gun Elevation: 20°
  • Turret Rotation Speed: 14.3°/s (Stock), 16.8°/s (Upgraded), __._°/s (Prior + Full Crew), __._°/s (Prior + Expert Qualif.), __._°/s (Prior + Ace Qualif.)
  • Reloading Rate: 7.9s (Stock), __._s (Full Crew), __._s (Prior + Expert Qualif.), __._s (Prior + Ace Qualif.)
1 x 76 mm Gun M1
  • Ammunition Capacity: 45 Shells
  • Gun Depression: -10°
  • Gun Elevation: 20°
  • Turret Rotation Speed: 14.3°/s (Stock), 16.8°/s (Upgraded), __._°/s (Prior + Full Crew), __._°/s (Prior + Expert Qualif.), __._°/s (Prior + Ace Qualif.)
  • Reloading Rate: 7.9s (Stock), __._s (Full Crew), __._s (Prior + Expert Qualif.), __._s (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%
M62 Shell 127 125 116 106 97 89 APCBC 792 7 1.2 20 63.7 +4° 48° 63° 71°
M42A1 Shell 7 7 7 7 7 7 HE 800 5.8 0.1 0.5 390 +0° 79° 80° 81°
M79 Shot 155 154 131 107 88 72 AP 792 6.8 N/A N/A N/A -1° 47° 60° 65°
M93 Shot 221 215 203 181 154 124 APCR 1036 4.3 N/A N/A N/A +1.5° 66° 70° 72°
Ammunition Type of
warhead
Velocity
in m/s
Projectile
Mass in kg
Screen radius
in m
Screen time
in s
Screen hold time
in s:
Explosive Mass in
TNT equivalent
in g:
M88 Smoke 274 3.4 13 5 20 50
Ammo racks
Ammo racks of the Hellcat.
Full
ammo
1st
rack empty
2nd
rack empty
3rd
rack empty
4th
rack empty
5th
rack empty
Recommendations Visual
discrepancy
45 37 (+8) 27 (+18) 17 (+28) (+36) (+44) Turret empty: 37 (+8) No

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 (39-64°) Front glacis
12.7 mm (23-52°) Lower glacis
12.7 mm (23-26°) Top
12.7 mm Bottom
12.7 mm (12°) Top
12.7 mm (36°) Bottom
8 mm
Turret 25.4 mm (15-26°) Turret front
19 mm + 25.4 mm (0-55°) Gun mantlet
12.7 mm (1-21°) 12.7 mm (7°) N/A Open-top
8 mm Bustle and Front

Notes:

  • Suspension wheels and tracks are 15 mm thick.
  • Belly armour is 5 mm thick.
  • The hull underside right above the tracks are only 8 mm thick.
  • Tracks are attached the the turret rear, granting some 15 mm in thickness.

Engine & mobility

Weight: 17.7 ton

Max Speed: 79 km/h
Stock

  • Engine Power: 653 hp @ 2400 rpm
  • Power-to-Weight Ratio: 36.89 hp/ton
  • Maximum Inclination: 40°

Upgraded

  • Engine Power: 804 hp @ 2400 rpm
  • Power-to-Weight Ratio: 45.42 hp/ton
  • Maximum Inclination: 43°
Weight: 17.7 ton

Max Speed: 72 km/h
Stock

  • Engine Power: 407 hp @ 2400 rpm
  • Power-to-Weight Ratio: 22.99 hp/ton
  • Maximum Inclination: 40°

Upgraded

  • Engine Power: 460 hp @ 2400 rpm
  • Power-to-Weight Ratio: 25.99 hp/ton
  • Maximum Inclination: 41°
Weight: 17.7 ton

Max Speed: 72 km/h
Stock

  • Engine Power: 407 hp @ 2400 rpm
  • Power-to-Weight Ratio: 22.99 hp/ton
  • Maximum Inclination: 40°

Upgraded

  • Engine Power: 460 hp @ 2400 rpm
  • Power-to-Weight Ratio: 25.99 hp/ton
  • Maximum Inclination: 41°

Modules and improvements

History of creation and combat usage

US Tank Destroyer Doctrine

The anti-tank doctrine established by the US military called for fast, powerful vehicles able to stop the German blitzkrieg tactics by ambushing the attacking tank forces. Unlike the other armoured fighting vehicles in the theater, the tank destroyers were made to be placed in reserves to counter any breach in the front lines by taking out the enemy with ambushes. This role led to the desire for a fast vehicle with a powerful gun, armour was not a concern due to the emphasis in speed. The initial response was the M10 GMC, made form the Medium Tank M4 Sherman hull and mounting a 3-inch M1918 gun. While adequate at this role, it was no more faster than an ordinary Sherman tank. The M18 GMC was a response to the problem to provide the tank destroyer force with a very fast tank destroyer.

Development

The origin of the M18 GMC design came as early as December 1941 with the requirement of a Christie suspension and a 37mm gun. This requirement called for a radical new tank design rather than a derivative of the Medium Tank M4 Sherman. These requirements changed as the war progressed, the first change was to the new and innovative Torsion bar suspension from Buick Motor Division from General Motors and another change was to mount the British QF 6-pounder gun then in use on their Churchill Mark III tanks, the developed prototype vehicle was called the T49 GMC. Then the army wanted the heavier 75mm gun used on the Shermans on it, this prototype was designated the T67 GMC. Finally, the army decided to mount the 76mm gun also in development for the Sherman onto the prototype, now known as T70 GMC. Changes to hull shape and turret took place to accommodate all these new requirements and armament, but it eventually was approved for service and finally renamed as the M18 GMC and started production in mid-1943, which went on until ending in October 1944 with 2,507 units produced. A variant called the M39 Armored Utility Vehicle was also produced, its turret was removed for space for cargo, 8 personnel, or to tow guns.

Combat usage

These vehicles saw combat debut in the summer of 1944, where they are given the unofficial nickname "Hellcat" by the crews using them. Unlike the M10 tank destroyer that was built before it, the M18 GMC was purely made for emphasis on speed. Armour was restricted down to a maximum of 1-inch (25mm) on the turret front while the rest of the body plating are a measly .50-inches thick (12.7mm). The turret was also an open-top design similar to the M10 tank destroyer, meaning the crew are left exposed to the elements and enemy fire and shrapnel. These faults were mitigated by the fact that as its role as an tank destroyer, it was to have minimum contact with infantry and ambush enemy tanks in concealed position rather than face them in an offensive operation. Nevertheless, the M18 GMC were well liked by the crew for its 76mm cannon, which allows it to destroy the newer German Tiger Is and Panthers tanks from the front with HVAP ammo (though the Panther at close range only) when unable to flank around to the side or rear of these tanks. The speed was also astounding, reaching 55 miles per hour maximum, this makes the M18 GMC the fastest armoured fighting vehicle in World War II and was not succeeded until the third-generation main battle tank M1 Abrams. The name "Black Cat" came from the 805th Tank Destroyer Battalion, Company B where the naming practice for the battalion was the first letter of the company, then "Cats". Thus, a crew in Company B named their hellcat the "Black Cats".

While use in the Pacific theater was limited due to the inadequate armour of Japanese tanks, it saw most of its service in the European theater against Nazi Germany. Due to the lack in armour and emphasis on speed, the M18 crews utilize the "shoot and scoot" tactic in attacking the enemy from one position and quickly move to another before the enemy could find their initial firing position, this tactic confuses the German tanks, and could even lead them to believe there are more armoured enemy than what it appears. The M18 GMCs were present during the Battle of Arracourt in France as the 704th Tank Destroyer Battalion. Lt. Edwin Leiper led an M18 platoon of C Company and in the battle knocked a total of 15 German tanks for the loss of three M18; six of these German tank kills, most of which were Panthers, were credited to one M18 led by Sgt Henry R. Hartman. The M18 also played a crucial part in the Battle of the Bulge, where its top speed of 55 mph was finally put to good use in bypassing the enemy forces. Four M18 tank destroyers of the 705th Tank Destroyer Battalion assisted the 506th Parachute Infantry Regiment in attacking the 2nd Panzer Divison and their support to kill the fuel lines to the German tanks. The overall attack had the M18 GMCs credited with at least 24 tank kills of the 30 total inflicted in the attack.

Legacy

Overall, the M18 GMCs proved itself by having the highest kill to loss ratio to any other tanks and tank destroyer in American service, making it the most effective tank destroyer in American service. However, like its other tank destroyer brethens, it soon found itself obsolete along with the entire tank destroyer doctrine. Mainly due to increasing prevalence of well-armoured tanks that could do its job more efficiently such as the M26 Pershing, but also the lack of German AFVs at the time of the war and a study on ammo usage indicates that the tank destroyers spent more time supporting infantry with high-explosive shells than killing tanks with armour-piercing, rendering the anti-tank section an unecessary component in the modernizing armoured forces.

Today, some countries in the world such as Yugoslavia still have the M18 Hellcats in reserves.

Screenshots and fan art

M18 "Black Cat" unit insignia on the hull side.

Additional information (links)

[Devblog] M18 and M18 'Black Cat'
Official War Thunder article: [Weapons of Victory] M18 "Black Cat"

This tank could only be obtained; exclusively with the purchase of, one of the following packs. The packs, are available to buy; on the War Thunder Store page.

References


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us_m18_hellcat_black_cat.png

Icon-country-usa.png M18 Black Cat
Nation USA
Type Tank destroyer
Rank 3
Battle Rating
4.7
5.3
4.7

   Metric✓       Imperial   

   Metric       Imperial✓   

Characteristics
Weight
17,700 kg
39,021 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)
36.89
37.48
22.99
23.36
22.99
23.36
HP/ton ratio (Upgraded)
45.42
46.15
25.99
26.41
25.99
26.41
Max speed
79 km/h
49 mph
72 km/h
45 mph
72 km/h
45 mph
Main Weapon
1 x 76 mm M1A1 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 N/A
Crew training cost 10,000 SL
Max repair cost*
1,620 SL
2,500 SL
2,930 SL
Free repair time (Stock)
6h 51m
16h 14m
18h 28m
Free repair time (Upgraded)
2h 17m
5h 24m
6h 09m
Warning: this sidebar is a WIP, and can be incorrect. Last updated 1.77.2.191.