| Displacement | 170t standard, 172t trial |
|---|---|
| Length | 43.20m pp, 44.50m wl |
| Width | 4.80m |
| Draught | 1.70m |
| Machinery | 2-shaft diesel, 3000bhp |
| Speed | 23kt |
| Armament | 1-40mm AA, 18 DCs |
| Complement | ? |
| Name | Plan | Builder | Laid down | Launch | Complete | |
|---|---|---|---|---|---|---|
| CHa-251 | Tsurumi SB | 1936.12.14 | 1937. 6. 9 | 1937. 9.30 | CH-51 | 1940.11.15 CHa-51 1943. 4.30 CHa-251 1944. 8.28 miscellaneous |
| CHa-252 | Tsurumi SB | 1936.12.14 | 1937. 8.25 | 1939. 7.25 | CH-52 | 1940.11.15 CHa-52 1943. 4.30 CHa-252 1944. 2.15 miscellaneous |
| CHa-253 | Hitachi, Sakurajima | 1937. 1. 9 | 1937. 7.15 | 1937.10.31 | CH-53 | 1940.11.15 CHa-53 1943. 4.30 CHa-253 1944. 2.15 miscellaneous |