| Displacement | 45t standard, 61t full load |
|---|---|
| Length | 23.0m oa |
| Width | 5.5m |
| Draught | 1.0m |
| Machinery | 3-shaft diesel, 1300hp |
| Speed | 19kt |
| Complement | 8 |
| Number | Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|---|
| ASH-41 | ASH-41 (Shobo 41-Go) | FY1962 | Azuma SB | 1963. 7.12 | 1964. 1. 9 | 1964. 2.28 | Auxiliary Service boat | (Omura airunit, Sasebo district) 1973. 3. 1 (AirDivision31, AG, SDF) 1977. 4.18 Aux. Fire-float Craft (YE-01) 2001. 3.16 disc |