| Displacement | 935t standard, 1020t full load |
|---|---|
| Length | 83.8m pp |
| Width | 7.9m |
| Draught | 2.4m |
| Machinery | 2-shaft geared turbine, 2 boilers, 4000shp |
| Speed | 18kt |
| Armament | 2-12cm/45cal gun, 6-25mm AA, 60 DCs |
| Complement | ? |
| Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|
| PB-31 | FY1917 | Kawasaki, Kobe | ? | 1920.10.13 | 1920.12.10 | DD2 (Kiku) | 1940. 4. 1 PB (PB-31) 1944. 3.30 sunk (air attack, Palau) [07.30N, 134.30E] 1944. 5.10 disc |
| PB-32 | FY1917 | Kawasaki, Kobe | ? | 1920.11. 9 | 1920.12.20 | DD2 (Aoi) | 1940. 4. 1 PB (PB-32) 1941.12.23 lost (wrecked, Wake I.) [19.17N, 166.37E] 1942. 1.10 disc |
| PB-33 | FY1917 | Uraga Dock | ? | 1920.10.29 | 1921. 4.20 | DD2 (Hagi) | 1940. 4. 1 PB (PB-33) 1941.12.23 lost (wrecked, Wake I.) [19.17N, 166.37E] 1942. 1.10 disc |
| PB-34 | FY1917 | Ishikawajima SB | ? | 1921. 2.21 | 1921. 5. 5 | DD2 (Susuki) | 1940. 4. 1 PB (PB-34) 1944. 3. 6 sunk (collision with Yakaze, S of Kavien) 1945. 1.10 disc |
| PB-35 | FY1918 | Kawasaki, Kobe | ? | 1921. 5. 9 | 1921. 6.30 | DD2 (Tsuta) | 1940. 4. 1 PB (PB-35) 1942. 9. 2 sunk (air attack, off Lae) [06.45S, 147E] 1943. 2.10 disc |
| PB-36 | FY1917 | Fujinagata SB | ? | 1920.11.27 | 1921. 5.31 | DD2 (Fuji) | 1940. 4. 1 PB (PB-36) 1946. 8.10 disc 1946 to Net, BU |
| PB-37 | FY1917 | Uraga Dock | ? | 1921. 5. 9 | 1922. 3. 3 | DD2 (Hishi) | 1940. 4. 1 PB (PB-37) 1942. 1.24 damaged (action, off Borneo) [01.24S, 117.02E] 1942. 4.10 disc |
| PB-38 | FY1918 | Ishikawajima SB | ? | 1922. 3.14 | 1922. 8. 9 | DD2 (Yomogi) | 1940. 4. 1 PB (PB-38) 1944.11.25 sunk (torpedoed, Bashi Strait) [20.12N, 121.51E] 1945. 3.10 disc |
| PB-39 | FY1917 | Fujinagata SB | ? | 1922. 3.15 | 1922. 7.31 | DD2 (Tade) | 1940. 4. 1 PB (PB-39) 1943. 4.23 sunk (torpedoed, S of Yonaguni I.) [23.45N, 122.45E] 1943. 7. 1 disc |