| Displacement | 1900t standard, 2243t surface, 3061t submerged |
|---|---|
| Length | 92.1m pp, 95.7m wl, 98.5m oa |
| Width | 9.06m |
| Draught | 5.31m |
| Machinery | 2-shaft diesel and electoric motor, 8000bhp surface, 2600shp submerged |
| Speed | 20kt surface, 7.5kt submerged |
| Armament | 6-53cm TT, 1-14cm/40cal gun, 1-13.2mm AA, 1 aircraft |
| Complement | 97 |
| Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|
| I-6 | FY1931 | Kawasaki, Kobe | 1932.10.14 | 1934. 3.31 | 1935. 5.15 | SS1 | 1944. 6.30 missing (near Saipan) 1944. 9.10 disc |