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| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
|---|---|---|---|---|---|---|---|
| Victoria (ex-Unseen) | SS876 | Cammell Laird, Birkenhead, UK | 12.8.1987 | 14.11.1989 | 20.7.1991 // 2.12.2000 | in service (2019) | |
| Windsor (ex-Unicorn) | SS877 | Cammell Laird, Birkenhead, UK | 13.3.1989 | 16.4.1992 | 25.6.1993 // 5.7.2001 | in service (2019) | |
| Corner Brook (ex-Ursula) | SS878 | Cammell Laird, Birkenhead, UK | 28.8.1987 | 22.2.1991 | 8.5.1992 // 10.3.2003 | in service (2019) | |
| Chicoutimi (ex-Upholder) | SS879 | VSEL, Barrow, UK | 11/1983 | 2.12.1986 | 9.6.1990 // 2.10.2004 | in service (2019) |
| Displacement standard, t | 1870 |
|---|---|
| Displacement normal, t | 2185 / 2400 |
| Length, m | 70.3 |
| Breadth, m | 7.60 |
| Draught, m | 5.50 |
| No of shafts | 1 |
| Machinery | 2 Paxman Valenta 16RPA 200SZ diesel-generators, 1 General Electric electric motor |
| Power, h. p. | 5400 |
| Max speed, kts | 12 / 20 |
| Fuel, t | diesel oil 200 |
| Endurance, nm(kts) | 8000(8) / 270(3) |
| Armament | 6 - 533 TT (bow, 18, inc 4 Sub-Harpoon SSM (UGM-84B2), Mk 48 mod. 4, mines) |
| Electronic equipment | type 1007 radar, type 2040 Argonaut, type 2007, type 2046 towed array, type 2019 PARIS sonars, Sea Search II ECM suite, 2x SSDE decoy launchers, TDHS CCS |
| Complement | 47 |
| Diving depth operational, m | 260 |
Former British Upholder class submarines, purchased in 1998 and recommissioned in 2000-2004 after refit (including replacing of batteries) and modernization.
2017, Windsor; 2018, Corner Brook: - type 2040, type 2007, type 2046, type 2019 sonars, TDHS CCS; + BQQ-10(v)7 sonar suite, BSY-2 CCS
Corner Brook was badly damaged by running ashore 4.6.2011 and returned into the service only in 2016.

