| Displacement | 215t standard, 222t normal |
|---|---|
| Length | 29.0m pp, 29.6m wl |
| Width | 5.9m |
| Draught | 2.39m |
| Machinery | 1-shaft diesel, 300bhp |
| Speed | 9.5kt |
| Range | 1700nm by 9.5kt |
| Armament | 1-8cm/23cal AA gun, 1-7.7mm MG, 6 DCs |
| Complement | ? |
| Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|
| Wa-1 | FY1940 | Osaka IWks | ? | 1941.11. 9 | 1942. 1.31 | MSa | 1942. 5. 4 sunk (air attack, off Guadalcanal) [09.07S, 160.12E] 1942. 5.25 disc |
| Wa-2 | FY1940 | Osaka IWks | ? | 1941.11. 9 | 1942. 2.28 | MSa | 1942. 5. 4 sunk (air attack, off Guadalcanal) [09.07S, 160.12E] 1942. 5.25 disc |
| Wa-3 | FY1940 | Osaka IWks | ? | 1942. 3.31 | 1942. 5.30 | MSa | 1945. 7.24 sunk (air attack, at Soerabaya) 1947. 5. 3 disc |
| Wa-4 | FY1940 | Naniwa dock | ? | 1942. 3.10 | 1942. 6.29 | MSa | 1944. 7.19 sunk (air attack, チモール沖） [08.38S, 125.26E] 1944. 9.10 disc |
| Wa-5 | FY1940 | Osaka IWks | ? | 1942. 3.31 | 1942. 6.30 | MSa | 1947. 5. 3 disc |
| Wa-6 | FY1940 | Naniwa dock | ? | 1942. 7.18 | 1942.10.30 | MSa | 1945. 8.10 sunk (air attack, 岩手県山田湾） 1945.10.20 disc |
| Wa-7 | FY1941 | Osaka IWks, Hikoshima | ? | 1942. 7.16 | 1942.12.28 | MSa | 1946 to UK 1947. 5. 3 disc |
| Wa-8 | FY1941 | Osaka IWks, Hikoshima | ? | 1942. 7.16 | 1943. 1.31 | MSa | 1944.10.21 sunk (air attack, 比島附近） [11.30N, 123.20E] 1945. 5.10 disc |
| Wa-9 | FY1941 | Namura SB | ? | 1943. 1.25 | 1943. 4.14 | MSa | 1946 to UK 1947. 5. 3 disc |
| Wa-10 | FY1941 | Sanoyasu dock | ? | 1943. 1.25 | 1943. 5.14 | MSa | 1945. 1.11 sunk (action, ルソン島沖） [17.20N, 120E] 1945. 5.10 disc |
| Wa-11 | FY1941 | Naniwa dock | ? | 1942 | 1943. 2.24 | MSa | 1945.11.30 disc 1947.11.14 to UK, BU |
| Wa-12 | FY1941 | Naniwa dock | ? | 1942 | 1943. 8.31 | MSa | 1945.11.30 disc 1947.10. 3 to USSR |
| Wa-13 | FY1941 | Hitachi, Hikoshima | ? | 1943. 1.25 | 1943. 4.14 | MSa | 1945.11.30 disc 1947.10. 1 to USA, BU |
| Wa-14 | FY1941 | Hitachi, Hikoshima | ? | 1943. 1.25 | 1943. 5.14 | MSa | 1945.11.30 disc 1947.10. 3 to Chi |
| Wa-15 | FY1941 | Namura SB | ? | 1943 | 1943. 4.30 | MSa | 1945.11.30 disc |
| Wa-16 | FY1941 | Sanoyasu dock | ? | 1943 | 1943. 3.31 | MSa | 1945.11.30 disc 1947.11.14 to UK, BU |
| Wa-17 | FY1941 | Naniwa dock | ? | 1943 | 1943. 5.28 | MSa | 1945.11.30 disc 1947.10. 3 to USSR |
| Wa-18 | FY1941 | Namura SB | ? | 1943 | 1943. 7.31 | MSa | 1945.11.30 disc 1947.10. 3 to USA, BU |
| Wa-19 | FY1941 | Sanoyasu dock | ? | 1943 | 1943. 6.30 | MSa | 1945.11.30 disc 1947.10. 3 to Chi |
| Wa-20 | FY1941 | Naniwa dock | ? | 1943 | 1943. 7.31 | MSa | 1945.11.30 disc 1947.10. 3 to USSR |
| Wa-21 | FY1941 | Hitachi, Hikoshima | ? | 1943. 3.11 | 1943. 6.15 | MSa | 1945.11.30 disc 1947.10. 1 to USA, BU |
| Wa-22 | FY1941 | Namura SB | ? | 1943 | 1943.10.20 | MSa | 1945.11.30 disc 1947.10. 3 to Chi |