Tier VIII Heavy Tank USA

M-III-Y

Tank ID 21025

Vehicle description

Wargaming Tankopedia

In June 1953, H.L. Yoh Company Inc. presented seven blueprints of a new tank and proposed designs for several of its components. It was planned to use the AOSI-1195-5 8-cylinder engine. The M-III-Y project included a turret with a small frontal projection, a gun mantlet of original design, suspension with horizontal shock absorbers, and an additional track inside the main one that allowed the vehicle to maintain its maneuverability if the main track was destroyed. The project was suspended. No prototypes were built.

Description from the Wargaming Tankopedia · Language selected automatically

Technical profile

Standard configuration

Hit points

1,560

Weight

44.4 t

Forward speed

40 km/h

Reverse speed

17 km/h

View range

380 m

Signal range

745 m

Armour

	Front	Sides	Rear
Hull	178	89	38
Turret	241	76	38

Engine: Continental AOSI-1195-5 Y III A · 600 hp

Radio: AN/GRC-7

Armament

Standard gun and ammunition

90 mm Gun T208 (rifled)

Calibre 90 mm

Reload time 6.4 s

Aiming time 1.9 s

Dispersion 0.37

Rate of fire 9.38 /min

Ammo capacity 54

Shell types

APCR · composite rigid Damage 180 / 240 / 300

Penetration 167 / 223 / 279 mm

HEAT · shaped charge Damage 180 / 240 / 300

Penetration 218 / 290 / 363 mm

HE · high explosive Damage 240 / 320 / 400

Penetration 34 / 45 / 56 mm

Marks of Excellence

Damage thresholds

Combined Damage (Damage + Assist + Tracking)

Combined damage

1 Mark ≥ 65 %

2,075

2 Marks ≥ 85 %

3,018

3 Marks ≥ 95 %

3,899

Approximation based on WN8 expected values — not an official Wargaming figure.

WN8 Expected Values

XVM reference

XVM Expected Values for WN8 calculation (per battle)

Per battle (avg.)

Avg. damage 1,258

Avg. spotted 1.13

Avg. kills 0.80

Avg. defence 0.61

Exp. win rate 51.86 %

Community stats

Measured, not estimated

Average across every profile stored on WG-Watch — real battles instead of expected values.

Win rate

54.39 %

Avg. WN8

2,033

Battles

6,451

As of Aug 31, 2026

Rank 120 of 228 at Tier VIII

Best players on this tank

By WN8

From the stored profiles, minimum 50 battles on this vehicle. Updated daily.

#	Player	WN8	Battles	Win rate
1	Rasierer32 eu	5,008	102	66.67 %
2	Yzne eu	4,635	117	71.79 %
3	skill4ltu eu	4,612	96	68.75 %
4	Alfazet eu	4,605	80	66.25 %
5	Daddy eu	4,355	61	77.05 %
6	Quickfingers eu	4,121	69	62.32 %
7	gyonifiu eu	4,077	94	68.09 %
8	OIDA_Da_AUTkatzlschwoaf eu	3,666	73	67.12 %
9	swiss1809 na	3,604	96	58.33 %
10	CostaFastAlles eu	3,463	93	58.06 %