Imperial Japanese Navy — Submarine class
I-400-class submarine
The class in numbers
- 18 Planned
- 3 Completed
- 15 Cancelled
Design and service
- Type
- Submarine
- Navy
- Imperial Japanese Navy
- Built
- 18 January 1943 – 24 July 1945
- In commission
- 1944–1945
- Operators
- Imperial Japanese Navy
Class specifications
Figures for the class as designed. Individual vessels varied, sometimes considerably — each vessel page carries its own configurations.
As built
- Length
- 122 m (400.3 ft)
- Speed
- 18.7 knots (34.6 km/h, 21.5 mph)
- Complement
- 144
- Main gun
- 140 mm (5.5 in)
- Armament
- 3 M6A1 Seiran floatplane
- 8 × 533 mm forward torpedo tubes
- 1 × 14 cm/40 11th Year Type naval gun
- 3 × 25 mm triple-mounted Type 96 autocannon (9 barrels total)
- 1 × single-mounted 25 mm Type 96 autocannon
Roster
| Vessel | Pennant | Commissioned | Fate |
|---|---|---|---|
| Japanese submarine I-400 | 1944 | Target 1945 | |
| Japanese submarine I-401 | 1945 | Target 1945 | |
| Japanese submarine I-402 | 1945 | Scuttled 1945 |
Sources
- Facts harvested from I-400-class submarine on Wikipedia. Figures only — no wording is taken from it.