Alvand-class frigate

	IRIS Alvand
Class overview
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	1
Lost	3
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 following the Iranian Revolution, and served in the Islamic Republic of Iran Navy during the Iran–Iraq War. Three remain in service. The fourth was sunk by the U.S. Navy during Operation Praying Mantis in 1988.