Alvand class frigate

A starboard view of the Iranian destroyer escort IIS Saam (DE-71), redesignated IS Alvand (F-71)
Class overview
Builders: Vosper Thornycroft, Vickers,
United Kingdom
Operators: Iran
Succeeded by: Moudge class frigate
Building: 0
Completed: 4
Active: 3
Lost: 1
General characteristics
Displacement: 1,100 tons (1,540 tons full load)
Length: 94.5 m (310 ft)
Beam: 11.07 m (36 ft)
Draft: 3.25 m (10.5 ft)
Propulsion: 2 Paxman Ventura cruising diesels 3,800  bhp, 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 diesels39 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 x C-802 anti-ship missiles
1 × 4.5 inch (114 mm) Mark 8 gun
1 x twin 35 mm AAA, 2 x single 20 mm AAA
2 × 81 mm mortars
2 × 0.50cal machine guns
1 x Limbo ASW mortar
2 x triple 12.75 in torpedo tubes