Submarine class
I-121-class submarine
I-121 class submarine
The class in numbers
- 6 Planned
- 4 Completed
- 2 Cancelled
- 3 Lost
Design and service
- Type
- Submarine
- Built
- 1924–1928
- In commission
- 1927–1945
- Operators
- Imperial Japanese Navy
- Builders
- Kawasaki Corporation
Class specifications
Figures for the class as designed. Individual vessels varied, sometimes considerably — each vessel page carries its own configurations.
As built
- Displacement, surfaced
- 1,142 long tons (1,160 t)
- Displacement, submerged
- 1,768 long tons (1,796 t)
- Length
- 85.2 m (279.5 ft) OA
- Speed
- 14.9 knots (27.6 km/h, 17.1 mph)
- Complement
- 51
- Main gun
- 140 mm (5.5 in)
- Armament
- 2 × 533 mm torpedo tubes
- 12 × 6th Year Type torpedoes
- 1 × 14 cm/40 11th Year Type naval gun
- 42 × naval mines
Roster
| Vessel | Pennant | Commissioned | Fate |
|---|---|---|---|
| Japanese submarine I-121 | 1927 | Scuttled 1945 | |
| Japanese submarine I-122 | 1928 | Sunk 1945 | |
| Japanese submarine I-123 | 1928 | Sunk 1942 | |
| Japanese submarine I-124 | 1927 | Sunk 1942 | |
| Japanese submarine I-22 (1926) | 1926 | 1928 | Sunk 1945 |
Sources
- Facts harvested from I-121-class submarine on Wikipedia. Figures only — no wording is taken from it.