| Displacement | 615t standard, 691t trial |
|---|---|
| Length | 71.63m pp, 74.30m wl, 76.26m oa |
| Width | 8.08m |
| Draught | 2.29m |
| Machinery | 2-shaft recipro, 3 boilers, 4000ihp |
| Speed | 20kt |
| Armament | 2-12cm/45cal gun (1x2), 1-8cm/40cal AA gun |
| Complement | 92 |
| Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|
| W-1 | FY1920 | Harima SB | ? | 1923. 3. 6 | 1923. 6.30 | MS (WW-1) | 1924. 4.24 renamed (W-1) 1945. 8.10 sunk (air attack, Yamada bay) 1945. 9.15 disc |
| W-2 | FY1920 | Mitsui, Tamano | ? | 1923. 3.17 | 1923. 6.30 | MS (WW-2) | 1924. 4.24 renamed (W-2) 1942. 3. 1 sunk (torpedoed, Java I) 1945.11.30 disc |
| W-3 | FY1920 | Osaka IWks | ? | 1923. 3.29 | 1923. 6.30 | MS (WW-3) | 1924. 4.24 renamed (W-3) 1945. 4. 9 sunk (torpedoed, off Ofunato) [39.07N, 141.57E] 1945. 5.10 disc |
| W-4 | FY1923 | Sasebo NYd | 1923.12. 1 | 1924. 4.24 | 1925. 4.29 | MS | 1946. 7.11 scuttled (S of Singapore) 1946. 8.10 disc |