| Displacement | 2650t standard, 3512t surface, 4290t submerged |
|---|---|
| Length | 107.0m pp, 110.0m wl, 111.0m oa |
| Width | 10.15m |
| Draught | 6.14m |
| Machinery | 2-shaft diesel and electoric motor, 3700bhp surface, 1200shp submerged |
| Fuel | oil 590t |
| Speed | 15.8kt surface, 6.3kt submerged |
| Range | 13,000nm by 14kt surface, 100nm by 3kt submerged |
| Armament | 4-53cm TT, 2-8cm mortar, 7-25mm AA |
| Complement | 90 |
| Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|
| I-351 | FY1942 | Kure NYd | 1943. 5. 1 | 1944. 2.24 | 1945. 1.28 | SS1 | 1945. 7.14 sunk (torpedoed, off Borneo) [04.30N, 110E] 1945. 7.31 missing 1945. 9.15 disc |
| I-352 | FY1942 | Kure NYd | 1943.11. 8 | 1944. 4.23 | - | 1945. 6.22 sunk incomplete (air attack, at Kure) | |
| I-353 | FY1942 | - | - | - | - | 1943 cancelled |