YU1 1944
| Name | No | Builder | Laid down | Launched | Comp | Fate |
| ゆ1 <YU1> | Hitachi, Kasado | 7/1943 | 16/10/1943 | late 1943 | surrendered 8/1945, BU 1946 | |
| ゆ2 <YU2> | Hitachi, Kasado | 1943 - 1944 | --- | --- | BU incomplete 1946 | |
| ゆ3 <YU3> | Hitachi, Kasado | 1943 - 1944 | --- | --- | BU incomplete 1946 | |
| ゆ4 <YU4> | Hitachi, Kasado | 1943 - 1944 | --- | --- | BU incomplete 1946 | |
| ゆ5 <YU5> | Hitachi, Kasado | 1943 - 1944 | --- | --- | BU incomplete 1946 | |
| ゆ6 <YU6> | Hitachi, Kasado | 1943 - 1944 | --- | --- | BU incomplete 1946 | |
| ゆ7 <YU7> | Hitachi, Kasado | 1943 - 1944 | --- | --- | BU incomplete 1946 | |
| ゆ8 <YU8> | Hitachi, Kasado | 1943 - 1944 | --- | --- | BU incomplete 1946 | |
| ゆ9 <YU9> | Hitachi, Kasado | 1943 - 1944 | --- | --- | BU incomplete 1946 | |
| ゆ10 <YU10> | Hitachi, Kasado | 1943 - 1944 | 1943 - 1944 | mid-1944 | surrendered 8/1945, foundered 1/1946 | |
| ゆ11 <YU11> | Hitachi, Kasado | 1943 - 1944 | --- | --- | BU incomplete 1946 | |
| ゆ12 <YU12> | Hitachi, Kasado | 1943 - 1944 | 1943 - 1944 | mid-1944 | surrendered 8/1945, foundered 1/1946 |
|
Displacement standard, t |
|
|
Displacement normal, t |
273 / 370 |
|
Length, m |
39.5 pp 40.9 oa |
|
Breadth, m |
3.90 |
|
Draught, m |
2.95 |
|
No of shafts |
1 |
|
Machinery |
2 diesels / 1 electric motor |
|
Power, h. p. |
400 / 75 |
|
Max speed, kts |
10 / 5 |
|
Fuel, t |
diesel oil 30 |
| Endurance, nm(kts) | 1500(8) / 32(4) |
| Armament |
1 x 1 - 37/46 97-shiki |
| Military load | 40 t of cargo |
|
Complement |
13 |
| Diving depth operational, m | 100 |
Ship project history: Maru-Yu series of IJA. These boats were built by request and on means from the budget of Imperial Japanese Army. Project was developed by army officers.
Modernizations: None.
Naval service: YU1 was lost in 1943, fate of YU2-9 and 11 is unknown. YU10 and 12 were handed over on demolition in 1947.
© Ivan Gogin, 2008-10