F172 Ambuscade (Type 21 Amazon Class)
 |
| Laid down | 1st September 1971 |
| Launched | 18th January 1973 |
| Completed | N/A |
| Commissioned | 5th September 1975 |
| Fate | Sold: 1994 to Pakistani Navy |
| Builders | Yarrow, Glasgow United Kingdom |
| Complement | 177 |
| Dimensions | |
|---|---|
| Displacement | 2750 tons std 3250 tons max |
| Dimensions | 384' x 41' 9" |
| Draught | 19' 6" |
| Armament | |
| Main guns | 1 x Mk8 4.5" |
| Secondary guns | 2 x 20mm Oerlikon (2 x 1) |
| Torpedo tubes | None |
| Other weapons | As built: SAM: 4 x SeaCat (1 x 4) Refitted: SSM: 4 x MM38 Exocet (4 x 1) SAM: 4 x SeaCat (1 x 4) |
| Countermeasures | 2 x Corvus chaff launchers 1 x Type 182 towed decoy |
| Armour | N/A |
| Aircraft Facilities | |
| Aircraft | As built: 1 x Westland Wasp Refitted: 1 x Westland Lynx |
| Flightdeck | N/A |
| Hangar | N/A |
| Catapults | None |
| Arrestor system | None |
| Aviation fuel | N/A |
| Electronics Fit | |
| Radar | Type 992Q surveillance Type 978 navigation 2 x Type 912 fire control |
| Sonar | Type 184M Type 162M |
| ECM | N/A |
| Other | 2 x GWS24 SeaCat fire control 1 x Cossor Type 191 IFF |
| Machinery | |
| Engines | COGOG 2 x Rolls Royce Olympus gas turbines 2 x Rolls Royce RM1A Tyne gas turbines |
| Power output | 50000shp Olympus 8500shp Tyne |
| Speed | 18kts Tyne 32kts Olympus |
| Shafts | 2 |
| Range | 4000NM @ 17kts 1200NM @ 30kts |
| Fuel | N/A |
