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General characteristics
3 peopleCrew
75 %Visibility
front / side / backArmour
16 / 12 / 10Hull
16 / 10 / 0Turret
7.2 tWeight
248 hp130 hpEngine power
34.4 hp/t18.1 hp/tPower-to-weight ratio
49 km/h forward
8 km/h back
45 km/h forward
7 km/h back
2 x 20 mm Type 98 cannonMain weapon
520 roundsAmmunition
3 / 3.9 sReload
20 roundsBelt capacity
300 shots/minFire rate
-10° / 85°Vertical guidance
18000 Rp icon.pngResearch
77000 Sl icon.pngPurchase
Sl icon.png1800 / 2316/1300 / 1673/1800 / 2316Repair
22000 Sl icon.pngCrew training
77000 Sl icon.pngExperts
330 Ge icon.pngAces
136 % Rp icon.pngReward for battle
140 % Sl icon.png100 % Sl icon.png60 % Sl icon.png


Featured Image: So-Ki in WT Garage

The So-Ki is a rank III Japanese self-propelled anti-aircraft gun with a battle rating of 3.3 (AB/RB/SB). It was introduced along with the initial Japanese Ground Forces tree in Update 1.65 "Way of the Samurai".

This anti-aircraft vehicle features dual Type 98 20 mm cannons which have high-velocity capability and great mobility. The tank is quite fast, being built off the chassis of the Type 98 Ke-Ni, and can run away quite fast. You can use it as a scout by shooting other tanks so they show up on the map, but your primary role should be AA. This tank performs decently at it's BR of 3.3, but you'll soon get sick of it as you'll be stuck with it until the M42 Duster. Either way, it is a fairly decent AA vehicle.

General info

Survivability and armour

Due to the non-existent armour, literally anything can destroy the So-Ki. Enemies armed with .50 cals - tanks and planes - are particularly deadly, as they can pierce through the weak armour with no problem. Destroying this tank is easy, with a shot slightly to the right of the driver's hatch for a one-shot to knock out both crew members in the hull. A common way to go is to incapacitate the gunner, waiting for him to be replaced, and then knocking him out again. That or hull break. Fortunately, this thing is pretty fast, and there are some instances where you can literally outrun shells from enemies shooting at a fair distance away.

Armour type:

  • Rolled homogeneous armour
Armour Front Sides Rear Roof
Hull 16 mm (16-19°) Front plate
16 mm (11-72°) Front glacis
16 mm (29-48°) Lower glacis
12 mm 10 mm (12-51°) 9 mm
Turret 8 mm (10-14°) N/A N/A N/A


  • Suspension wheels and tracks are both 15 mm thick.


Game Mode Max Speed (km/h) Weight (tons) Engine power (horsepower) Power-to-weight ratio (hp/ton)
Forward Reverse Stock Upgraded Stock Upgraded
Arcade 49 8 7.2 136 248 18.89 34.44
Realistic 45 7 115 130 15.97 18.06
A three-quarter view of an early 20 mm So-Ki SPAAG.

The So-Ki is quite fast, being built off of the Type 98 Ke-Ni, so use this blistering speed to your advantage. You can be a scout and shoot enemies so they appear on your map - but only do this if you have a clear way to escape and aren't in danger of being sniped by an enemy sitting on a hill 700 meters away.


Main armament

Main article: Type 98 (20 mm)

Double the guns means double the difficulty enemy aircraft will have with dealing with you, so be sure to aim for engines and at the centre of planes - your exposed cabin means that planes will often try to dive on you, hoping to score an easy knockout - give them a nasty surprise by filling their engines with Type 100 HE-T shells. That being said, always, always, always pay attention to what's going on in the air. Your gunner gets knocked out quickly, so be sure to always be aware of the battle in the air, as well as on the ground.

20 mm Type 98 (x2) Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity (Belt) Fire rate Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 520 (20) 300 -10°/+85° ±180° N/A 35.22 48.75 59.20 65.47 69.65 3.90 3.45 3.18 3.00
Realistic 23.80 28.00 34.00 37.60 40.00


  • Default: API-T · HEFI-T · HEFI-T
  • Type 100 HE-T: HEFI-T
  • Type 100 AP-T: API-T
Penetration statistics
Belt Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
Default 48 45 35 26 19 14
Type 100 HE-T 2 2 2 2 2 2
Type 100 AP-T 48 45 35 26 19 14
Belt details
Belt Type of
Mass (kg)
Fuse delay
Fuse sensitivity
Explosive Mass
(TNT equivalent) (g)
0% 50% 100%
Type 100 HE-T HEFI-T 950 0.13 0 0.1 6 79° 80° 81°
Type 100 AP-T API-T 928 0.16 N/A N/A N/A 47° 60° 65°

Ammo racks

Ammo racks of the So-Ki
rack empty
26 (+24) No

Usage in battles

Capture bases and attack lightly armoured targets when you can. For the most part you should be focused on an AA role, rather than an AT one, so always be listening for aircraft engines.

At its battle rating, the So-Ki can penetrate the sides of some tanks like the M4 Sherman and Pz.Kpfw. IV ausf. F2 and Pz.Kpfw. III series, but this is only at close range and generally the idea of using this tank to engage medium tanks not a very good one. This tank can deal with many lightly armoured targets like other SPAAs and some light tanks, so if you feel lucky then that is always a viable option. As for an AA role, this tank's performance is good enough for the job. It can shoot down low-flying aircraft with relative ease, and anyone who knows where to aim can easily shoot down most aircraft this tank will meet.


Tier Mobility Protection Firepower
I Tracks Parts Horizontal Drive Type 100 HE-T
II Suspension Brake System FPE Adjustment of Fire Type 100 AP-T
III Filters Crew Replenishment Elevation Mechanism
IV Transmission Engine Artillery Support

Pros and cons


  • Rapid firing cannons allow for excellent aerial coverage
  • Great vehicle mobility allowing for fast repositioning
  • Frontal protection from light machinegun
  • Great ammunition storage capacity
  • Fast reloading time


  • Gunner crew is exposed and have no rear protection
  • Very vulnerable to incoming artillery rounds and aerial strafing/bombing
  • Rapid firing easily depletes ammunition magazines, trigger control required


Prior to World War II, Japan experimented with developing a SPAAG which could be mounted to several different platforms, including trucks, tanks and railroad cars. Production ended up developing a SPAAG which could shoot down aircraft at low altitudes, however, the Japanese military wanted their SPAAGs to have the capability to also shoot down aircraft at medium altitudes too. Along with the requirement to shoot down aircraft at low and medium altitudes,m the SPAAG needed to also be highly mobile and capable of providing protection to convoys from aerial attack as a defensive vehicle also.

By 1941, Japan started prototyping two variations of the new SAAG, a single mounted Type 98 20 mm cannon known as "Ta-Se" short for Taikū ("anti-air") sensha ("tank") and the "So-Ki" which featured dual-mounted Type 98 20 mm cannons. The platform which was chosen for the SPAAG was the newly built Type 98 Ke-Ni light tank with its turret removed and the dual cannon platform installed.

The crew positions of the So-Ki featured a driver situated in the centre of the vehicle and right under the anti-aircraft gun emplacement. To aid in protecting the cannon crew (gunner and loaders) a gun shield was added to block or deflect small arms fire, however, it was no match for a direct tank shell hit or strafing attack by fighters, attackers and dive bombers. A bench for the crew was mounted at the rear of the platform and could be folded out of the way to allow for placement of more ammunition magazines if necessary.

The total ammunition capacity for this vehicle was 22 belts plus two more already loaded in the cannons. The rate of fire for the Type-98 cannons was around 830 rounds per minute, however, velocities between rounds differed as they were comprised of different weights due to round type and explosive filler. Unfortunately, the So-Ki never entered production as by the time it was ready to enter service the needs of Japanese anti-aircraft vehicles had significantly evolved meaning the So-Ki was already outdated. The Japanese were also having a difficult time massing sufficient resources necessary for the production of this unit because of Allied progression in the Pacific front


See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the series of the vehicles;
  • links to approximate analogues of other nations and research trees.

External links

Japan anti-aircraft vehicles
Wheeled  Type 94
Tracked  Ta-Se · So-Ki
Post-War  Type 87 · Type 93
America  ▅M42