| (Okitsu) | |
| Displacement | 615t normal |
|---|---|
| Length | 62.18m pp, 66.0m oa |
| Width | 8.69m |
| Draught | 2.59m |
| Machinery | 2-shaft recipro, 2 boilers, 1500ihp |
| Fuel | oil 75t |
| Speed | 14kt |
| Range | 3500nm by 10kt |
| Armament | 2-10cm/47cal gun, 1-8cm/40cal AA gun, 4 MGs, 80 mines |
| Complement | 66 |
| (Tatara) | |
| Displacement | 370t standard |
| Length | 45.7m pp, 48.7m oa |
| Width | 8.2m |
| Draught | 1.6m |
| Machinery | 2-shaft recipro, 2 boilers, 1950ihp |
| Fuel | oil 75t |
| Speed | 12.5kt |
| Armament | 2-8cm gun, 13-25mm AA |
| Complement | 70 |
| (Karatsu) | |
| Displacement | 560t standard |
| Length | 60.0m pp, 65.4m wl |
| Width | 9.52m |
| Draught | 1.75m |
| Machinery | 2-shaft recipro, 2 boilers, 3150ihp |
| Speed | 16kt |
| Armament | 2-8cm gun, 10 MGs |
| Complement | 82 |
| (Suma) | |
| Displacement | 625t light, 650t normal |
| Length | 70.1m pp, 72.4m oa |
| Width | 11.0m |
| Draught | 1.22m |
| Machinery | 2-shaft recipro, 2 boilers, 2000ihp |
| Fuel | oil 76t |
| Speed | 14kt |
| Armament | 2-15.2cm gun, 1-8cm AA gun |
| Complement | 65 |
| (Maiko) | |
| Displacement | 95t light, 133t normal |
| Length | 36.5m pp |
| Width | 6.0m |
| Draught | 0.66m |
| Machinery | 2-shaft recipro, 1 boiler, 250ihp |
| Speed | 11.8kt |
| Armament | 2-57mm gun, 3 MGs |
| Complement | 24 |
| (Narumi) | |
| Displacement | 180t standard |
| Length | 48.8m pp |
| Width | 7.5m |
| Draught | 0.84m |
| Machinery | 2-shaft recipro, 2 boilers, 1100ihp |
| Fuel | oil 56t |
| Speed | 14kt |
| Armament | 2-8cm gun, 6 MGs |
| Complement | 60 |
| Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|
| Okitsu | - | Ita Cantieri | ? | 1927. 5.22 | 1927 | Ita Lepanto | 1943. 9. 9 scuttled 1944. 3. 1 GB 1944.10. 1 GB 1945. 9.30 disc 1945 to Chi (Chien Ning) 1956 disc, BU |
| Tatara | - | Chi Kiangnan | ? | 1927. 5.28 | 1927 | USA PG-43 Guam | 1940? renamed (PR-3 Wake) 1941.12. 8 captured 1941.12.25 GB 1944.10. 1 GB 1945. 9.30 disc 1946 to Chi (Tai Yuan) 1949 to PRC |
| Karatsu | - | Chi Kiangnan | ? | 1927. 9.12 | 1928 | USA PR-7 Luzon | 1942. 5. 5 sunk 1942. 8. 1 GB 1944.10. 1 GB 1945. 2. 5 sunk (abandoned, Manila) 1945. 4.10 disc |
| Suma | - | UK Sunderland | ? | 1915.10. 9 | 1916 | UK Moth | 1941.12.12 scuttled 1941.12.25 captured 1942. 7. 1 GB 1944.10. 1 GB 1945. 3.19 sunk (mined, Anching) 1945. 5.10 disc |
| Maiko | - | UK Yarrow | ? | 1909 | 1910 | Por Macau | 1943. 8.15 acquired (GB) 1944.10. 1 GB 1945 to Chi (Wu Feng) 1947. 5. 3 disc 1949 to PRC |
| Narumi | - | Chi Shanghai Dock | ? | 1921. 2.28 | 1921 | Ita Ermanno Carlotto | 1943. 9. 9 sunk 1943.11. 1 GB 1944.10. 1 GB 1945 to Chi (Kiang Kun) 1947. 5. 3 disc 1949 to PRC |