| Displacement | 2850t standard |
|---|---|
| Length | 67m oa |
| Width | 29.9m |
| Draught | 7.5m |
| Machinery | 4-shaft diesel-electric, 6700bhp/3000shp |
| Speed | 11kt (at towing 3kt) |
| Range | 3800nm/10kt |
| Armament | none |
| Sensor | Radar: OPS-16 Sonar: UQQ-2 SURTASS |
| Complement | 40 |
| Number | Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|---|
| AOS-5201 | Hibiki | FY1989 | Mitsui, Tamano | 1989.11.28 | 1990. 7.27 | 1991. 1.30 | Acoustic Survey ship | (Ocean survey command) 2006. 4. 3 (Ocean survey command, SDF) 2015.12. 1 (1st acoustic survey squadron, Ocean survey and ASW support command, SDF) |
| AOS-5202 | Harima | FY1990 | Mitsui, Tamano | 1990.12.26 | 1991. 9.11 | 1992. 3.10 | Acoustic Survey ship | (Ocean survey command) 2006. 4. 3 (Ocean survey command, SDF) 2015.12. 1 (1st acoustic survey squadron, Ocean survey and ASW support command, SDF) |