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The 30 mm Type 5 cannon was a Japanese Navy autocannon used near the end of World War II. It was an indigenous 30 mm design with better performance than the Navy's earlier Oerlikon-derived Type 2 or the Imperial Army's Browning-derived Ho-155, although it was considerably heavier. The Type 5 was to have become the standard fighter cannon of the Japanese Navy – four would have been mounted on the J7W Shinden – but by the end of the war had seen use on only a few aircraft, including variants of the Mitsubishi J2M and Yokosuka P1Y.

Type 5 cannon
Type	Aircraft cannon
Place of origin	Imperial Japanese Navy
Service history
Wars	World War II
Specifications
Mass	70 kg (154 lb 5 oz)
Length	2,070 mm (81 in)
Barrel length	1,350 mm (53 in)
Cartridge	30 x 122 mm (345 g)
Calibre	30 mm (1.2 in)
Action	Short recoil-operated
Rate of fire	435-450 rounds/min
Muzzle velocity	920 m/s (3,000 ft/s)
Feed system	Belt

Specifications

• Caliber: 30 mm (1.2 in)
• Ammunition: 30 × 122 (345 g)
• Weight: 70 kg (155 lb)
• Rate of fire: 350 rounds/min

Cannon was constructed by engineer Masaya Kawamura, in Nihon Tokushu-Ko KK, and produced in Navy factories in Toyokawa and also in small numbers KK Nihon Seikojo and Nihon Tokushu-Ko KK.[1]

See also

• Type 2 cannon
• Type 99 cannon
• Ho-155 cannon
• Ho-105 cannon

References

• Gustin Emmanuel, The WWII Fighter Gun Debate: Gun Tables (1999)
• Anthony G. Williams, 30 MM CALIBRE CARTRIDGES

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