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| Names | Builders | Commissioned | Losses | Transfers | Discarding |
|---|---|---|---|---|---|
1 boat |
Ourazaki, Kure: 1 boat |
1944: 1 boat |
unknown |
none |
unknown |
| Displacement standard, t | |
|---|---|
| Displacement normal, t | 11.5 |
| Length, m | 12.5 |
| Breadth, m | 1.65 |
| Draught, m | 1.20 |
| No of shafts | 1 |
| Machinery | 1 electric motor |
| Power, h. p. | 20 |
| Max speed, kts | 9 |
| Fuel, t | none |
| Endurance, nm(kts) | |
| Armament | 1 1-t explosive charge |
| Complement | 2 |
| Diving depth operational, m |
1944" />
Smallest Japanese midget submarine, intended to attack ships anchored in Pacific atolls. Design, known as "9-Kanamono", included oval hull form and side ballast tanks.
None.
Boat never went to sea. Fate is unknown.

