The Hiro Naval Arsenal (''Hiro Kaigun Kōshō'' or ''Dai-Jūichi Kaigun Kōkū-shō'' (11th Naval Arsenal), often abbreviated as ''Hiroshō'') at

Kure is a port and major shipbuilding city situated on the Seto Inland Sea in Hiroshima Prefecture, Japan. With a strong industrial and naval heritage, Kure hosts the second-oldest naval dockyard in Japan and remains an important base for the Japan M ...

(呉),

Hiroshima prefecture is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Hiroshima Prefecture has a population of 2,811,410 (1 June 2019) and has a geographic area of 8,479 km² (3,274 sq mi). Hiroshima Prefecture borders Okayama ...

, was a production facility for

seaplane A seaplane is a powered fixed-wing aircraft capable of takeoff, taking off and water landing, landing (alighting) on water.Gunston, "The Cambridge Aerospace Dictionary", 2009. Seaplanes are usually divided into two categories based on their tec ...

flying boat A flying boat is a type of fixed-winged seaplane with a hull, allowing it to land on water. It differs from a floatplane in that a flying boat's fuselage is purpose-designed for floatation and contains a hull, while floatplanes rely on fusela ...

s, and aero engines for the

Imperial Japanese Navy The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, when it was dissolved following Japan's surrender ...

before and during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

. It was largely destroyed in a raid by

B-29 Superfortress The Boeing B-29 Superfortress is an American four-engined propeller-driven heavy bomber, designed by Boeing and flown primarily by the United States during World War II and the Korean War. Named in allusion to its predecessor, the B-17 Fl ...

es on 5 May 1945.

Aircraft

Designed and produced: *

Hiro G2H 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 The Hiro G2H1 was ...

- long-range bomber *

Hiro H1H The Hiro H1H (or Navy Type 15) was a 1920s Japanese bomber or reconnaissance biplane flying boat developed from the Felixstowe F.5 by the Hiro Naval Arsenal for the Imperial Japanese Navy. The aircraft were built by Hiro, the Yokosuka Naval Ar ...

- biplane flying boat developed from the

Felixstowe F.5 The Felixstowe F.5 was a British First World War flying boat designed by Lieutenant Commander John Cyril Porte RN of the Seaplane Experimental Station, Felixstowe. Design and development Porte designed a better hull for the larger Curtiss H-12 ...

Hiro H2H The Hiro H2H, or "Navy Type 89 Flying boat" ( ja, "八九式飛行艇"), was a Japanese patrol flying boat of the 1930s. Designed and built by the Hiro Naval Arsenal, it was a twin-engined biplane that was operated by the Imperial Japanese Navy. ...

- biplane flying boat developed from the Supermarine Southampton II *

Hiro H4H The Hiro H4H (or Hiro Navy Type 91 Flying Boat) was a 1930s Japanese bomber or reconnaissance monoplane flying boat designed and built by the Hiro Naval Arsenal for the Imperial Japanese Navy. Design and development First appearing in 1931 the H ...

- flying boat Prototypes and experimental aircraft: * Hiro R-3 - flying boat, 1 example built * Hiro H3H1 - flying boat, 1 example built * Hiro H10H - project only, never completed Aircraft designed by other manufacturers produced at Hiro: *

Yokosuka B3Y The Kugisho B3Y, or Navy Type 92 Carrier Attack Bomber, also popularly titled Yokosuka B3Y, was a Japanese aircraft carrier, carrier-based torpedo bomber of the 1930s. It was designed by the Naval Air Technical Arsenal at Yokosuka, and while unim ...

* Nakajima B5N "Kate" * Aichi E13A "Jake" * Yokosuka D4Y "Judy"

Engines

Hiro Type 14 The Hiro Type 14 engine, (full designation Hiro Type 14 500 hp water-cooled W-12), was a water-cooled twelve-cylinder W engine built by the Hiro Naval Arsenal (''Hiro Kaigun Ko-sho'') for the Imperial Japanese Navy. The Hiro Type 14 engine ...

* Hiro Type 61 * Hiro Type 91 *

Hiro Type 94 The Type 94 900 hp liquid-cooled in-line was a W-18 liquid-cooled aircraft engine. Two Type 94 engines were used to power the Imperial Japanese Navy Hiro G2H land-based bomber in 1933. The Type 94 engine was the eighteen-cylinder version of ...

References

* {{Authority control Defunct aircraft manufacturers of Japan Defunct aircraft engine manufacturers of Japan History of Hiroshima Prefecture