H4H | |
---|---|
Role | Patrol flying boat |
National origin | Japan |
Manufacturer | Hiro Naval Arsenal |
First flight | 1931 |
Introduction | 1933 |
Primary user | IJN Air Service |
Number built | 47 |
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.