O-Ni
Tier VII Heavy Tank Japan

O-Ni

Tank ID 5217

Vehicle description

Wargaming Tankopedia

A further development of the O-I with improved anti-tank guns. The military command's plan was to improve the earlier models and achieve a higher level of armor protection on the vehicle. Existed only in blueprints. No finished prototypes were built and the vehicle never saw action.

Description from the Wargaming Tankopedia · Language selected automatically

Technical profile

Standard configuration

Hit points

1,650

Weight

100.2 t

Forward speed

25 km/h

Reverse speed

10 km/h

View range

380 m

Signal range

550 m

Armour

Front Sides Rear
Hull 200 80 100
Turret 240 150 100

Engine: 2x Kawasaki Type 98 Kou (O-Ni) · 1,200 hp

Radio: Type 3 Otsu

Armament

Standard gun and ammunition

10 cm Cannon Type 92 (O-Ni)

Calibre 105 mm
Reload time 12.0 s
Aiming time 3.1 s
Dispersion 0.41
Rate of fire 5.00 /min
Ammo capacity 100

Shell types

AP · armour-piercing Damage 255 / 340 / 425

Penetration 131 / 175 / 219 mm

AP · armour-piercing Damage 255 / 340 / 425

Penetration 164 / 218 / 273 mm

HE · high explosive Damage 315 / 420 / 525

Penetration 40 / 53 / 66 mm

Marks of Excellence

Damage thresholds

Combined Damage (Damage + Assist + Tracking)

Combined damage
1 Mark ≥ 65 %
1,774
2 Marks ≥ 85 %
2,580
3 Marks ≥ 95 %
3,332

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 1,075
Avg. spotted 0.97
Avg. kills 0.95
Avg. defence 0.67
Exp. win rate 54.84 %

Community stats

Measured, not estimated

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

Win rate

53.86 %

Avg. WN8

1,546

Battles

22,722

As of Aug 31, 2026

Rank 42 of 85 at Tier VII

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 mailand eu 3,726 82 75.61 %
2 Yzne eu 3,604 134 61.19 %
3 Xilense eu 3,476 50 58.00 %
4 Jul_Le eu 3,413 65 56.92 %
5 GehakteMolen eu 3,373 148 64.86 %
6 Morganskillman eu 3,215 62 79.03 %
7 G0TT_M1T_UNS eu 3,207 144 66.67 %
8 Quickfingers eu 3,205 74 62.16 %
9 skill4ltu eu 3,093 168 68.45 %
10 Ursid eu 3,085 90 64.44 %

Commonly compared

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