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A starboard view of the Iranian destroyer escort IIS Saam, later renamed IRS Alvand
|Builders:||Vosper Thornycroft, Vickers|
|Operators:||Islamic Republic of Iran Navy|
|Succeeded by:||Moudge class|
|Displacement:||1,100 tons (1,540 tons full load)|
|Length:||94.5 m (310 ft)|
|Beam:||11.07 m (36.3 ft)|
|Draught:||3.25 m (10.7 ft)|
|Propulsion:||2 Paxman Ventura cruising diesels 3,800 bhp (2,800 kW), and 2 Rolls Royce Olympus TM-3A boost gas turbines 46,000 shp (34,000 kW) on 2 shafts|
|Speed:||17 knots (31 km/h) on diesels; 39 knots (72 km/h) on gas turbines|
|Range:||5,000 nmi (9,000 km) at 15 knots (28 km/h)|
The Alvand class (Persian: ناوچه کلاس الوند) was originally a class of four frigates known as the Saam class built for the pre-revolutionary Iranian Navy. They were renamed the Alvand class after the Iranian Revolution.
Three remain in service, a fourth was sunk by the US Navy in 1988 during the Iran-Iraq War.
Development and construction
- ASuW - 1 × quintuple Sea Killer Mk2 surface-to-surface missile
- AAW - 1 × triple Sea Cat surface-to-air missile launcher
- ASW 1 × 3 barrelled Anti Submarine Mortar Mark 10 Limbo launcher
- Guns - 1 × Mark 8 Mod 0 4.5 inch general purpose & 1 × twin 35mm Oerlikon AA
- Electronics - Plessey AWS 1 air surveillance radar with on-mounted IFF; 2 × Contravenes Seahunter systems (For use with Sea cat, Sea Killer & the 35mm mount); Decca RDL 1 passive direction finding equipment
They were refitted in the UK shortly before the 1979 Iranian Revolution.
They saw action during the "Tanker War" phase of the Iran–Iraq War and proved effective against Iraqi forces. However, after one was sunk, and other significant losses taken, during Operation Praying Mantis they saw little further use as the Iranian Navy proved no match for the US Navy.
The Sea Killer missiles were replaced by Chinese made C-802s in the 1990s, and the Sea Cats replaced by the addition of a 20 mm (0.79 in) AA gun.
Ships in the class
|Alvand - ex-Saam||71 (ex DE 12)||Vosper Thornycroft||1968||In Service|
|Alborz - ex-Zaal||72 (ex DE 14)||Vickers||1969||In Service|
|Sabalan - ex-Rostam||73 (ex DE 16)||Vickers||1969||In Service|
|Sahand - ex-Faramarz||74 (ex DE 18)||Vosper Thornycroft||1969||sunk on 18 April 1988.|
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