Former US LST 511-1152 class.
| Standard Displacement | 1650t |
| Length | 100.00m |
| Beam | 15.20m |
| Draught | 3.80m |
| Machine Type | 2 GM12-567ATL Diesel (LST 4001/4002)
2 GM12-278A Diesel (LST 4003) |
| Output | 1700PS |
| Number of shaft | 2 |
| Speed | 11kt |
| Crew | 100 |
| Original | |
| Guns | 2 Mk 3 40mm MG(I) (LST 4001)
2 Mk 1 40mm MG(II) (LST 4002/4003) |
| AS Weapons | none |
| Electronic Equipment | 1 OPS-4 SS Radar
2 Mk 51 GFCS (LST 4002/4003) |
| Name | Laid Down | Launched | Completed | Transfered | Deleted |
| LST 4001 Oosumi | 1944/01/11 | 1944/03/09 | 1944/04/25 | 1961/04/01 (ex-LST 689 Daggett County) | 1974/03/30 (returned) |
| LST 4002 Shimokita | 1944/09/06 | 1944/10/25 | 1944/11/20 | 1961/04/01 (ex-LST 835 Hillsdale County) | 1975/03/31 (returned) |
| LST 4003 Shiretoko | 1945/01/09 | 1945/02/14 | 1945/03/12 | 1961/04/01 (ex-LST 1064 Nansemond County) | 1976/03/31 (returned) |