Ho-1 (20 mm)

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Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.

Vehicles equipped with this weapon

General info

Tell us about the tactical and technical characteristics of the cannon or machine gun.

Available ammunition

  • Default: FI · HEFI-T · HEF-I · AP-T
  • Armored targets: AP-T
  • Air targets: FI · HEFI-T · FI · HEFI-T

Penetration statistics
Ammunition Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
HEFI-T 5 4 3 2 2 2
HEF-I 5 4 3 2 2 2
FI 5 4 3 2 2 2
AP-T 36 34 25 17 12 8
Shell details
Ammunition Velocity
mass (kg)
Fuse delay
Fuse sensitivity
Explosive mass
(TNT equivalent) (g)
0% 50% 100%
HEFI-T 883 0.13 0.1 0.1 8.5 79° 80° 81°
HEF-I 883 0.13 0.1 0.1 8.5 79° 80° 81°
FI 883 0.13 0.1 0.1 8.5 47° 56° 65°
AP-T 750 0.16 - - - 47° 60° 65°

Comparison with analogues

Give a comparative description of cannons/machine guns that have firepower equal to this weapon.

Usage in battles

Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against notable opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.

Pros and cons

Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.




The Imperial Japanese Army first issued their requirement for an anti-tank rifle in 1935 due to tension with the Red Army over the Manchurian Border and the Republic of China purchasing Vickers Six-Ton tanks. Kokura Arsenal entered a 20x125 mm design for the competition in 1936 which competed against a design from Nagoya Arsenal based on the Hotchkiss Mle 1929 and was accepted into service in 1938 as the Type 97 Automatic Cannon.

Despite the name, Type 97 was a semi-automatic only rifle that was the heaviest anti-tank rifle of World War II. While it saw some action in the 1938 Battles of Khalkhin Gol against the Soviets and was used for infantry support in China (leading to the development of a new high explosive round), it was obsolete by 1942 due to stronger tank armour.

The Imperial Japanese Army Air Service used the Type 97 in two capacities. The first was as a weapon for the Teishin Shudan Paratroopers. The second capacity was the Ho-1 and Ho-3 aircraft-mounted automatic cannons. Unlike the Type 97, the Ho-1 had a fully automatic mode with a rate of fire of 300-400 rpm and was fed with a larger 15-round detachable box magazine compared to the 12-round magazine used on the Type 97. The Ho-1 served as the defensive armament for the Ki-49 heavy bombers.


Excellent additions to the article would be video guides, screenshots from the game, and photos.

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 article about the variant of the cannon/machine gun;
  • references to approximate analogues by other nations and research trees.

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • encyclopedia page on the weapon;
  • other literature.

Japan aircraft cannons
20 mm  Ho-1 · Ho-3 · Ho-5 · Type 99 Model 1 · Type 99 Model 2
30 mm  Ho-155 · Type 5
37 mm  Ho-203 · Ho-204 · Type 94
40 mm  Ho-301
57 mm  Ho-401
75 mm  Type 88
20 mm  M39A3 (USA) · M61A1 (USA) · M197 (USA) · MG FF (Germany) · MG FF/M (Germany) · MG 151 (Germany)
30 mm  GAU-13/A (USA) · M230E-1 (USA)