| Displacement | 273t surface, 370t submerged |
|---|---|
| Length | 39.5m pp, 40.9m oa |
| Width | 3.9m |
| Draught | 2.95m |
| Machinery | 1-shaft diesel and electric motor, 400bhp surface, 75shp submerged |
| Speed | 10kt surface, 5kt submerged |
| Armament | 1-37mm AA gun |
| Complement | 13 |
| Name | Plan | Builder | Laid down | Launch | Complete | |
|---|---|---|---|---|---|---|
| Yu-1 | - | ? | ? | ? | ? | ? |
| Yu-2 | - | ? | ? | ? | ? | ? |
| Yu-3 | - | ? | ? | ? | ? | ? |
| Yu-4 | - | ? | ? | ? | ? | ? |
| Yu-5 | - | ? | ? | ? | ? | ? |
| Yu-6 | - | ? | ? | ? | ? | ? |
| Yu-7 | - | ? | ? | ? | ? | ? |
| Yu-8 | - | ? | ? | ? | ? | ? |
| Yu-9 | - | ? | ? | ? | ? | ? |
| Yu-10 | - | ? | ? | ? | ? | (survived in 1945. 8) |
| Yu-11 | - | ? | ? | ? | ? | ? |
| Yu-12 | - | ? | ? | ? | ? | (survived in 1945. 8) |