| Displacement | 440t standard (PC-317/318 460t), 500t full load (PC-317/318 520t) |
|---|---|
| Length | 60.0m oa |
| Width | 7.1m |
| Draught | 2.3m (PC-317/318 2.4m) |
| Machinery | 2-shaft diesel, 4000hp |
| Speed | 20kt |
| Armament | 2-40mm MG, 2-32cm AntiSub Torpedo racks (PC-317/318 6-32cm TT (3x2)), 1 Hedgehog, 1 DC rack |
| Complement | 80 |
| Number | Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|---|
| PC-309 | Umitaka | FY1957 | Kawasaki, Kobe | 1959. 3.13 | 1959. 7.25 | 1959.11.30 | Submarine Chaser | (Ominato district) 1960. 3. 1 (SubChaseron3, Ominato district) 1961.10. 1 (SubChaseron5, Ominato district) 1980. 3.17 Auxiliary Service boat renamed ASU-86 (ASU-86) (Ominato district) 1984. 3.10 disc |
| PC-310 | Otaka | FY1957 | Kure SB | 1959. 3.18 | 1959. 9. 3 | 1960. 1.14 | Submarine Chaser | (Ominato district) 1960. 3. 1 (SubChaseron3, Ominato district) 1961.10. 1 (SubChaseron5, Ominato district) 1981. 3.27 Auxiliary Service boat renamed ASU-88 (ASU-88) (Ominato district) 1985. 2.20 disc |
| PC-317 | Wakataka | FY1961 | Kure SB | 1962. 3. 5 | 1962.11.13 | 1963. 3.30 | Submarine Chaser | (SubChaseron5, Ominato district) 1982. 3.27 (SubChaseron4, Maizuru district) 1985. 3.27 Auxiliary Service boat renamed ASU-64 (ASU-64) (Maizuru district) 1988. 3.17 disc |
| PC-318 | Kumataka | FY1962 | Fujinagata SB | 1963. 3.20 | 1963.10.21 | 1964. 3.25 | Submarine Chaser | (SubChaseron5, Ominato district) 1982. 3.27 (SubChaseron3, Kure district) 1985. 3.27 Auxiliary Service boat renamed ASU-65 (ASU-65) (Ominato district) 1989. 3.24 disc |