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The 30mm Type 5 cannon was a Japanese Navy autocannon used near the end of World War II. It was an indigenous design with better performance than Oerlikon-derived Type 2 or 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.


  • Caliber: 30 mm (1.2 in)
  • Ammunition: 30 x 122 (345 g)
  • Weight: 70 kg (155 lb)
  • Rate of fire: 500 rounds/min
  • Muzzle velocity: 760 m/s (2,495 ft/s)


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