| Displacement | 4544t standard |
|---|---|
| Length | 133m oa |
| Width | 17.4m |
| Draught | 5.7m |
| Machinery | 2-shaft diesel, 8000bhp |
| Speed | 18kt |
| Armament | none |
| Sensor | Radar: OPS-9 |
| Complement | 135 |
| Number | Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|---|
| ARC-482 | Muroto | FY1977 | MHI, Shimonoseki | 1978.11.28 | 1979. 7.25 | 1980. 3.27 | Layer | (Ocean survey command) 2006. 4. 3 (Ocean survey command, SDF) 2012. 4. 4 disc |