Former US LST 802 Hamilton County. She has been modified as mine sweeper squadron flag ship while in US service. Bought by Japan on 1960 as flag ship 1st Mine Sweeping Flottila.
| Standard Displacement | 1650t |
| Length | 100.00m |
| Beam | 15.20m |
| Draught | 3.80m |
| Machine Type | 2 GM12-567ATL Diesel |
| Output | 1700PS |
| Number of shaft | 2 |
| Speed | 11kt |
| Crew | 70 |
| Original | |
| Guns | 2 Mk 1 40mm MG(II)
4 Mk 3 40mm MG(I) |
| AS Weapons | none |
| Electronic Equipment | 1 SPS-10 SS Radar
2 Mk 51 GFCS |
| Name | Laid Down | Launched | Completed | Transfered | Deleted |
| MST 461 Hayatomo | 1944/09/02 | 1944/10/19 | 1944/11/13 | 1960/06/30 (ex-LST 802 Hamilton County) | 1972/03/31 |