Alvand-class frigate

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Class overview
Alborz (72) and Sabalan (73) sailing together
Name	Alvand / Saam class
Builders	Vosper Thornycroft, Vickers
Operators	Imperial Iranian Navy Islamic Republic of Iran Navy
Succeeded by	Moudge class
Built	1968–1972
In service	1971–present
Completed	4
Active	3
Lost	1
General characteristics
Type	Frigate
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 TM2 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)
Complement	125-146
Armament	4 × C-802 anti-ship missiles 1 × 4.5 in (114 mm) Mark 8 gun 1 × twin 35 mm (1.4 in) AA guns 2 × single 20 mm (0.79 in) guns 2 × 81 mm (3 in) mortars 2 × 0.50 cal machine guns 1 × Limbo ASW mortar 2 × triple 12.75 in (324 mm) torpedo tubes

The Alvand class (Persian: کلاس الوند) or Saam class (Persian: کلاس سام) was originally a class of four frigates built for the Imperial Iranian Navy. They were renamed after the Iranian Revolution, and served in the Islamic Republic of Iran Navy during Iran-Iraq War. Three still remain in service. A fourth was sunk by the U.S. Navy in 1988.

Development and construction

The ships were built in the United Kingdom by Vosper Ltd and based on their Mark 5 design with the following arms & equipment:^[1]

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 × Contraves 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.^[2]

History

The ships were originally named after characters from Ferdowsi's Shahnameh. After the Islamic Revolution they were renamed after mountains in Iran.^[3]

They saw action during the "Tanker War" phase of the Iran–Iraq War and proved effective against Iraqi forces. 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 U.S. Navy.^[4]

Upgrades

The Sea Killer missiles were replaced by Chinese made C-802s in the 1990s. The Sea Cats were replaced by the addition of a 20 mm (0.79 in) AA gun.

Two triple 12.75-inch (324 mm) torpedo tubes, two 81 mm (3 in) mortars and two 0.50 caliber machine guns were also fitted.^[3]

Successors

The Moudge-class frigate is a modified Iranian-built version of the Alvand class, with five either in service or under construction.^[5]

Ships in the class

Ship	Pennant number	Builder	Laid down	Launched	Commissioned	Status
Alvand (ex-Saam)	71 (ex DE 12)	Vosper Thornycroft	3 March 1968	25 July 1968	May 1971	In service
Alborz (ex-Zaal)	72 (ex DE 14)	Vickers	3 March 1968	4 March 1969	1 March 1971	In service
Sabalan (ex-Rostam)	73 (ex DE 16)	Vickers		4 March 1969	26 May 1972	In service
Sahand (ex-Faramarz)	74 (ex DE 18)	Vosper Thornycroft		30 July 1969	February 1972	sunk on 18 April 1988.

References

^ Moore, John Jane's Fighting Ships, 1974–75, pub Jane's Publishing Co Ltd, 1975, ISBN 0-354-00506-5-page 175.
^ John Pike. "Global Security". Retrieved 11 November 2014.
^ ^a ^b Military Factory.
^ "BBC 10 January 2012". BBC News. 10 January 2012. Retrieved 11 November 2014.
^ "New Wars". 20 February 2010. Retrieved 11 November 2014.

Sources

External links

Wikimedia Commons has media related to Alvand class frigate.

Photos of Alvand-class frigates in Operation Praying Mantis

Ship classes of the Islamic Republic of Iran Navy

Submarines

SSK	Kilo class
SSC	Fateh class
SSW	Nahang class Ghadir class

Principal surface combatants

FFG	Moudge class Alvand class
FSG	Bayandor class

Coastal warfare vessels

PGGF	Kaman class Sina class
PC	Parvin class Kaivan class Hendijan class

Amphibious warfare vessels

LSH	Hengam class
LSL	Karbala class
UCAC	BH.7 class SR.N6 class Tondar class

Auxiliary ships

AWT	Kangan class
AORH	Bandar Abbas class Ol class
AK	Delvar class

Future vessels

List of current ships of the Islamic Republic of Iran Navy

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