Hiro G2H

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Hiro G2H
Role Long-range bomber/reconnaissance monoplane
Manufacturer Hiro Naval Arsenal
First flight 1933
Primary user Imperial Japanese Navy Air Service
Number built 8

The Hiro G2H (or Hiro Navy Type 95 Twin-engined Land-based Attacker) was a 1930s Japanese bomber or reconnaissance monoplane designed and built by the Hiro Naval Arsenal for the Imperial Japanese Navy.

Design and development[edit]

The Hiro G2H1 was one of the first long-range land-based bomber/reconnaissance aircraft designed and built for the Imperial Japanese Navy. The prototype appeared in 1933 but suffered from structural weakness. The aircraft was a low-wing, cantilever monoplane powered by two 1,180 hp (880 kW) Type 94 piston engines. The aircraft struggled with the unreliability of the engines, and only eight aircraft were built. The development of the aircraft was costly in both manpower and finance and the aircraft did not live up to expectations. The aircraft however did give the Navy experience in the operation of long-range land-based aircraft, which was to prove invaluable in the later Pacific war.

Operational history[edit]

One aircraft was lost in an accident but the rest operated against the Chinese mainland during the Sino-Japanese incident. In 1937, five aircraft were destroyed in a fire at their base on Cheju Island.



Specifications (G2H1)[edit]

Data from The Illustrated Encyclopedia of Aircraft[1]

General characteristics

  • Crew: 6/7
  • Length: 20.15 m (66 ft 1¼ in)
  • Wingspan: 31.68 m (103 ft 11¼ in)
  • Height: 6.28 m (20 ft 7¼ in)
  • Wing area: 140 m2 (1,507 ft2)
  • Empty weight: 7,567 kg (16,682 lb)
  • Gross weight: 11,000 kg (24,250 lb)
  • Powerplant: 2 × Type 94 W-18 piston engine, 880 kW (1,180 hp) each


  • Maximum speed: 245 km/h (152 mph)
  • Range: 1,557 km (967 miles)
  • Service ceiling: 5,130 m (16,830 ft)


  • 5× 7.7 mm (0.303in) machin-guns (two on pivoted nose mounting, two on dorsal ring mounting, one in a ventral dustbin)
  • 6× 250kg (551lb) bomb or
  • 4× 400kg (882lb) bombs on underwing racks



  1. ^ Orbis 1985, p. 2172.


  • Mikesh, Robert C. and Shorzoe Abe. Japanese Aircraft, 1910-1941. Annapolis, MD: Naval Institute Press, 1990. ISBN 1-55750-563-2.
  • The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing.