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| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate | 
|---|---|---|---|---|---|---|---|
| Älvsborg | M02 | 366 | Karlskronavarvet, Karlskrona | 16.11.1968 | 11.11.1969 | 10.4.1971 | auxiliary A234 1993, to Chile 2.1997 (Almirante José Toribio Merino Castro) | 
| Visborg | M03 | 381 | Karlskronavarvet, Karlskrona | 16.10.1973 | 22.1.1975 | 6.2.1976 | auxiliary A265 1999, stricken 12.2010 | 
| Displacement standard, t | M02: 2500 M03: 2400 | 
|---|---|
| Displacement full, t | M02: 2660 M03: 2540 | 
| Length, m | 83.3 pp 92.4 oa | 
| Breadth, m | 14.7 | 
| Draught, m | 4.00 | 
| No of shafts | 1 | 
| Machinery | 2 Nohab-Polar 112VS diesels | 
| Power, h. p. | 4200 | 
| Max speed, kts | 16 | 
| Fuel, t | diesel oil | 
| Endurance, nm(kts) | |
| Armament | 3 x 1 - 40/70 Bofors SAK40/48 (315), 300 mines, helicopter deck | 
| Electronic equipment | Scanter 009, Raytheon nav., M22 radars | 
| Complement | 97 | 
 
                            Älvsborg was also used as a submarine tender with accommodation for five crews (205 men). Visborg was also used as a command ship with accommodation for 155 staff members.
1977-1978, both: - M22 radar; + Sea Giraffe 50HC, 9LV 200 radars, AR-700 ECM suite, 2x Philax decoy RL
No significant events.

