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| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
|---|---|---|---|---|---|---|---|
| Abtao | 36 | ASMAR, Talcahuano | --- | cancelled 1970 | |||
| Papudo | 37 | ASMAR, Talcahuano | 27.11.1971 | deleted 1993 | |||
| Pisagua | 38 | ASMAR, Talcahuano | --- | cancelled 1970 |
| Displacement standard, t | 308 |
|---|---|
| Displacement full, t | 412 |
| Length, m | 52.9 |
| Breadth, m | 7.00 |
| Draught, m | 3.10 |
| No of shafts | 2 |
| Machinery | 2 General Motors 16-567 diesels |
| Power, h. p. | 2800 |
| Max speed, kts | 20 |
| Fuel, t | diesel oil 60 |
| Endurance, nm(kts) | 5000(10) |
| Armament | 1 x 1 - 40/60 Mk 3, 2 x 2 - 20/70 Mk 24, 1 x 24 Hedgehog Mk 15 ASWRL, 4 Mk 6 DCT, 1 DCR |
| Electronic equipment | radar, SQS-17 sonar |
| Complement | 69 |
US PC1638 class craft, design based on wartime PC461.
late 1980s: - 1 x 24 Hedgehog Mk 15 ASWRL, 4 DCT, 1 DCR, SQS-17 sonar
No significant events.

