Imperial Japanese Navy — Submarine class
Type B1 submarine
B1 class
The class in numbers
- 18 Completed
- 17 Lost
- 1 Scrapped
Design and service
- Type
- Submarine
- Navy
- Imperial Japanese Navy
- Preceded by
- Type J3 submarine
- Succeeded by
- Type B2 submarine
- 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
- Displacement, surfaced
- 2,589 long tons (2,631 t)
- Displacement, submerged
- 3,654 long tons (3,713 t)
- Length
- 108.7 m (356.6 ft) OA
- Speed
- 23.5 knots (43.5 km/h, 27 mph)
- Main gun
- 140 mm (5.5 in)
- Armament
- 6 × bow 533 mm torpedo tubes
- 1 × 14 cm deck gun
- 2 × single 25 mm Type 96 anti-aircraft guns
Roster
| Vessel | Pennant | Commissioned | Fate |
|---|---|---|---|
| Japanese submarine I-15 | 1940 | Sunk 1942 | |
| Japanese submarine I-17 | 1941 | Sunk 1943 | |
| Japanese submarine I-19 | 1939 | Sunk 1943 | |
| Japanese submarine I-21 | 1940 | Sunk 1943 | |
| Japanese submarine I-23 | 1941 | 1942 | |
| Japanese submarine I-26 | 1941 | Sunk 1944 | |
| Japanese submarine I-27 | 1942 | Sunk 1944 | |
| Japanese submarine I-28 | 1942 | Sunk 1942 | |
| Japanese submarine I-29 | 1942 | Sunk 1944 | |
| Japanese submarine I-30 | 1940 | Scrapped 1942 | |
| Japanese submarine I-31 | 1941 | Sunk 1943 | |
| Japanese submarine I-32 | 1942 | Sunk 1944 | |
| Japanese submarine I-33 | 1942 | Scrapped 1942 | |
| Japanese submarine I-34 | 1942 | Sunk 1943 | |
| Japanese submarine I-35 | 1942 | Sunk 1943 | |
| Japanese submarine I-36 | 1942 | Scuttled 1945 | |
| Japanese submarine I-37 | 1943 | Sunk 1944 | |
| Japanese submarine I-38 | 1943 | Sunk 1944 | |
| Japanese submarine I-39 | 1943 | Sunk 1943 |
Sources
- Facts harvested from Type B1 submarine on Wikipedia. Figures only — no wording is taken from it.