HMS Active (F171)
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| Missing image HMS_Active_(F171).jpg HMS Active | |
| Career | 
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|---|---|
| Ordered: | |
| Laid down: | 23 July 1971 |
| Launched: | 23 November 1972 |
| Commissioned: | 19 July 1975 |
| Decommissioned: | 23 September 1994 |
| Fate: | Sold to Pakistan on 23 September 1994. |
| Struck: | |
| General Characteristics | |
| Displacement: | 3,250 tons full load |
| Length: | 384 feet (117 m) |
| Beam: | 41 ft 9 in (12.7 m) |
| Draught: | 19 ft 6 in (5.9 m) |
| Propulsion: | Two Rolls-Royce Olympus gas turbines, plus two Rolls-Royce RM1A Tyne gas turbines for cruising |
| Speed: | 32 knots (59 km/h) |
| Range: | 4,000 nautical miles at 17 knots (7,400 km at 31 km/h), 1,200 nautical miles at 30 knots (2,200 km at 56 km/h) |
| Complement: | 177 |
| Armament: | One Mk8 4.5 in (114 mm) gun Two 20 mm Oerlikon guns Four SeaCat SAMs Two Corvus chaff launchers One Type 182 towed decoy |
| Aircraft: | One Westland Wasp when built, refitted later for one Westland Lynx |
| Motto: | Festina lente (Hasten slowly) |
HMS Active (F171) was a Type 21 frigate of the Royal Navy. She was completed with Exocet launchers in 'B' position, the first of the class to be so fitted.
Active participated in the Falklands War and by the mid-1980s, as with the other surviving Type 21s, was suffering from cracking in the hull. She was taken in for refitting, with a steel plate being welded down each side of the ship. At the same time modifications were made to reduce hull noise.
Active decommssioned and was sold to Pakistan on 23 September 1994, being renamed Shah Jehan. Exocet was not transferred to Pakistan and Shah Jehan had her obsolete Sea Cat launcher removed. A Chinese LY 60N missile launcher was fitted in place of the Exocet launchers. Signaal DA08 air search radar replaced the Type 992 and SRBOC chaff launchers and 20 mm and 30 mm guns were fitted.
Shah Jehan remains in service with the Pakistani Navy.
See HMS Active for other ships of the same name.
| Type 21 frigate |
| Amazon | Antelope | Active | Ambuscade | Arrow | Alacrity | Ardent | Avenger |
| List of frigates of the Royal Navy |