She is the only class of production torpedoe boat in JMSDF service. All previous classes are considered experimental or prototypes.
| Standard Displacement | 107t |
| Length | 35.00m |
| Beam | 9.20m |
| Draught | 1.24m |
| Machine Type | CODAG
2 Mitsubishi 24WZ-31MC Diesel 2 IHI IM300 GT |
| Output | 6600PS (D)
4340PS (GT) |
| Number of shaft | 3 |
| Speed | 40kt |
| Crew | 26 |
| Original | |
| Guns | 2 Mk 3 40mm (I) |
| AS Weapons | 4 Type 54 (HO-101B) TT |
| Electronic Equipment | 1 OPS-19 SS Radar |
| Name | Laid Down | Launched | Completed | Deleted |
| PT 811 No.11 | 1970/03/17 | 1970/10/05 | 1971/03/27 | 1990/11/28 |
| PT 812 No.12 | 1971/04/22 | 1971/12/07 | 1972/03/28 | 1991/10/04 |
| PT 813 No.13 | 1972/03/28 | 1972/07/28 | 1972/12/16 | 1991/10/04 |
| PT 814 No.14 | 1973/03/23 | 1973/07/10 | 1974/02/15 | 1993/03/22 |
| PT 815 No.15 | 1974/04/23 | 1975/01/08 | 1975/07/10 | 1994/10/14 |