Second batch of domestic built coastal mine-sweepers. Using the Yashima class as a reference, she improved upon the Atada class MSC on both seaworthiness and crew space. MSC 617 and after is slightly larger in size and about 10t heavier.
| Standard Displacement | 320t |
| Length | 45.50m |
| Beam | 8.40m |
| Draught | 2.30m |
| Machine Type | 2 Mitsubishi YV10ZC15/20I Diesel |
| Output | 1200PS |
| Number of shaft | 2 |
| Speed | 13.5kt |
| Crew | 43 |
| Original | |
| Guns | 1 Mk 10 20mm(I) |
| AS Weapons | 1 Mine sweeping set (wire/magnetic/acoustic) |
| Electronic Equipment | 1 OPS-4 SS Radar (-MSC 624)
1 OPS-9 SS Radar (MSC 625-) 1 ZQS-1 Sonar (-MSC 624) 1 ZQS-1A Sonar (MSC 625-) |
| Name | Laid Down | Launched | Completed | Deleted |
| MSC 604 Kasado | 1957/07/09 | 1958/03/19 | 1958/06/26 | 1974/03/15 (AGS 5111)
1982/03/27 |
| MSC 605 Shisaka | 1957/07/20 | 1958/03/20 | 1958/08/16 | 1973/08/24 (YAS 62)
1983/03/30 |
| MSC 606 Kanawa | 1958/08/25 | 1959/04/22 | 1959/07/24 | 1974/09/30 (YAS 65)
1984/02/10 |
| MSC 607 Sakito | 1958/08/16 | 1959/04/22 | 1959/08/25 | 1974/08/28 (YAS 64)
1982/03/27 |
| MSC 608 Habushi | 1958/08/25 | 1959/06/19 | 1959/09/22 | 1974/08/22 (AGS 5112)
1982/09/04 |
| MSC 609 Kouzu | 1959/03/24 | 1959/11/12 | 1960/02/25 | 1972/07/01 (MST 473)
1981/03/18 |
| MSC 610 Tatara | 1959/03/30 | 1960/01/14 | 1960/03/26 | 1975/12/15 (AGS 5113)
1984/03/30 |
| MSC 611 Tsukumi | 1959/03/24 | 1960/01/12 | 1960/04/27 | 1975/12/15 (YAS 66)
1983/03/30 |
| MSC 612 Mikura | 1959/03/30 | 1960/03/14 | 1960/05/27 | 1975/12/15 (YAS 67)
1989/03/03 |
| MSC 613 Shikine | 1960/01/12 | 1960/07/22 | 1960/11/15 | 1976/03/31 (YAS 68)
1983/03/30 |
| MSC 614 Hirado | 1960/03/14 | 1960/10/03 | 1960/12/17 | 1976/03/31 (AGS 5114)
1985/03/27 |
| MSC 615 Koshiki | 1961/03/20 | 1961/11/06 | 1962/01/29 | 1974/04/01 (YAS 63)
1981/03/18 |
| MSC 616 Hotaka | 1961/03/22 | 1961/10/23 | 1962/02/24 | 1976/11/18 (YAS 70)
1983/03/30 |
| MSC 617 Karato | 1962/03/15 | 1962/12/11 | 1963/03/27 | 1978/03/01 (YAS 71)
1987/09/07 |
| MSC 618 Hario | 1962/03/19 | 1962/12/10 | 1963/03/23 | 1978/08/01 (AGS 5115)
1986/03/27 |
| MSC 619 Mutsure | 1963/03/28 | 1963/12/16 | 1964/03/24 | 1980/03/17 (YAS 72)
1986/06/04 |
| MSC 620 Chiburi | 1963/03/27 | 1963/11/29 | 1964/03/25 | 1980/03/17 (YAS 73)
1986/05/24 |
| MSC 621 Ootsu | 1964/03/07 | 1964/11/05 | 1965/02/24 | 1981/03/18 (MST 474)
1986/12/16 |
| MSC 622 Kudako | 1964/02/17 | 1964/12/18 | 1965/03/24 | 1981/03/18 (YAS 74)
1987/03/24 |
| MSC 623 Rishiri | 1965/03/09 | 1965/11/22 | 1966/03/05 | 1982/03/27 (YAS 75)
1988/03/10 |
| MSC 624 Rebun | 1965/03/27 | 1965/12/07 | 1966/03/24 | 1982/03/27 (YAS 76)
1987/03/24 |
| MSC 625 Amami | 1966/03/10 | 1966/10/31 | 1967/03/06 | 1983/01/27 (YAS 77)
1989/11/29 |
| MSC 626 Urume | 1966/02/01 | 1966/11/12 | 1967/01/30 | 1983/01/27 (YAS 78)
1989/11/17 |
| MSC 627 Minase | 1966/02/01 | 1967/01/10 | 1967/03/25 | 1984/01/26 (YAS 79)
1990/05/14 |
| MSC 628 Ibuki | 1967/02/27 | 1967/12/02 | 1968/02/27 | 1984/01/26 (YAS 80)
1989/11/29 |
| MSC 629 Katsura | 1967/02/10 | 1967/09/18 | 1968/02/15 | 1984/01/26 (YAS 81)
1990/05/14 |