Ho-203 cannon
TypeAircraft cannon
Place of origin Empire of Japan
Service history
WarsWorld War II
Specifications
Mass89 kg (196 lb)
Length1,532 mm (60.3 in)
Barrel length800 mm (31 in)

Cartridge37 x 112R (475 g)
Calibre37 mm (1.5 in)
ActionLong recoil-operated
Rate of fire120 rounds/min
Muzzle velocity570 m/s (1,900 ft/s)
Effective firing range900 m (3,000 ft)
Feed system15-round drum

Ho-203 was a Japanese autocannon that saw considerable use during World War II. It was a long-recoil automation of the Year 11 Type direct-fire infantry gun. It was fed by a 15-round closed-loop ammunition belt. It was operationally used only as the nose gun of the Kawasaki Ki-45-KAI heavy fighter, the anti-bomber workhorse of the Imperial Japanese Army, and tried out in the upper fuselage of the III-KAI variant of the Mitsubishi Ki-46 Dinah twin-engined warplane as a Japanese form of the Nazi Luftwaffe's Schräge Musik upwards-aimed armament system for heavy fighters.

Specifications

  • Caliber: 37 mm (1.45 in)
  • Ammunition: 37 x 112R (475 g)
  • Weight: 89 kg (196 lb)
  • Rate of fire: 120 rounds/min
  • Muzzle velocity: 570 m/s (1,870 ft/s)
  • Effective range: 900 m (2,950 ft).

Similar ordnance designs

See also

References

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