| Displacement | 630t standard, 738t trial |
|---|---|
| Length | 67.3m pp, 71.3m wl, 72.5m oa |
| Width | 7.85m |
| Draught | 2.0m |
| Machinery | 2-shaft geared turbine, 2 boilers, 3850shp |
| Speed | 20kt |
| Range | 2000nm by 14kt |
| Armament | 3-12cm/45cal gun, 2-25mm AA |
| Complement | 88 |
| Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|
| W-7 | FY1937 | Mitsui, Tamano | 1937.10.27 | 1938. 6.16 | 1938.12.15 | MSw | 1944. 4.15 sunk (torpedoed, Andaman Is) [11.34N, 93.08E] 1944. 6.10 disc |
| W-8 | FY1937 | Uraga dock | 1937.12.11 | 1938. 5.28 | 1939. 2.15 | MSw | 1946. 7.10 scuttled (S of Singapore) 1946. 8.10 disc |
| W-9 | FY1937 | Maizuru NYd | 1938. 2. 7 | 1938. 9.10 | 1939. 2.15 | MSw | 1942. 2. 1 sunk (mined, Ambon) [03.42S, 128.10E] 1942. 4.10 disc |
| W-10 | FY1937 | Ishikawajima SB | 1937.12.21 | 1938. 9.22 | 1939. 2.15 | MSw | 1941.12.10 sunk (air attack, Pigan Bay, Luzon I) [17.32N, 120.22E] 1942. 3.15 disc |
| W-11 | FY1937 | Uraga dock | 1938. 5.30 | 1937.12.28 | 1939. 7.15 | MSw | 1945. 3.28 sunk (air attack, off Macassar) [05.06S, 119.14E] 1945. 5.10 disc |
| W-12 | FY1937 | Ishikawajima SB | 1938. 5.28 | 1939. 2.18 | 1939. 8.15 | MSw | 1945. 4. 6 sunk (torpedoed, off Flores I) [08.13S, 119.14E] 1945. 5.25 disc |