| Displacement (tons) | 1130 surfaced, 1210 dived |
| Dimensions, feet (metres) | 167.3* 20 * 19 ( 51* 6.1 * 5.8 ) |
| Main machinery | Diesel-electric; 2 Hedemora-Pielstick V 12A/A2/15 diesels; 2,200 hp (m) (1.62 MW); 1 ASEA motor; 1500 hp (m) (1.1 MW); 1 shaft. |
| Speed, knots | 12 surfaced; 20 dived |
| Complement | 23 (7 officers) |
| Torpedoes | 4 - 21 in (533 mm) bow tubes. 10 FFV Type 613; anti-surface; wire-guided; passive homing to 15 km (8.5 n miles) at 45 kts; warhead 250 kg. |
| Mines | Minelaying capability |
| Weapons control | Ericsson IPS - 12 data automation |
| Radars | Navigation: Terma; I-band |
| Sonars | Plessey Hydra; hull-mounted; passive search and attack; medium frequency. |