| 8th Year Type torpedo | |
|---|---|
 The Mutsuki class were the first ships equipping this torpedo | |
| Type | Torpedo |
| Place of origin | Empire of Japan |
| Service history | |
| In service | 1920 |
| Used by | Imperial Japanese Navy |
| Wars | Second World War |
| Production history | |
| Designed | 1919 |
| Manufacturer | Kure, Yokosuka and Sasebo Naval Arsenals |
| Specifications | |
| Mass | 2,215 kg (4,883 lb) (N° 1) 2,362 kg (5,207 lb) (N° 2) |
| Length | 8.485 m (27 ft 10.1 in) |
| Diameter | 60.9 cm (24.0 in) |
| Effective firing range | 10,000 m (11,000 yd) (at 38 knots) |
| Maximum firing range | 20,000 m (22,000 yd) (at 28 knots) |
| Warhead | Shimose (picric acid) |
| Warhead weight | 300 kg (660 lb) (N° 1) 346 kg (763 lb) (N° 2) |
| Engine | 4-cylinder Schwarzkopff radial engine |
| Maximum speed | 43 knots (80 km/h) |
The "8th Year Type" (十二年式) was a 61 cm (24 in)-diameter torpedo of the Imperial Japanese Navy, launched from surface ships. It was later used as the template to develop the more advanced Type 90 torpedo. It was further derivatived in two variations, "Number 1" and "Number 2", having respectively a lighter and larger warheads.[1]
- ^ "Torpedoes of Japan". Retrieved 2024-06-24.