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Alvand vs Type 21

Alvand vs Type 21 at a glance — displacement 1,540 vs 3,250 tons, length 94 vs 117 m, speed 39 vs 37 knots, crew 146 vs 177.

Specifications
Alvand Type 21
Origin 🇬🇧 United Kingdom 🇬🇧 United Kingdom
Category Frigate Frigate
Type Frigate Frigate
Manufacturer Vosper Thornycroft Yarrow Shipbuilders
Year introduced 1971 1974
Number built 4 units 8 units
Estimated unit price NA $60 million
Displacement 1,540 tons 3,250 tons
Maximum speed 39.0 knots 37.0 knots
Range 5,000 nm at 15 knots 4,000 nm at 17 knots
Length 94.5 m 117.0 m
Beam 11.1 m 12.7 m
Crew 146 177
Performance Radar Chart
Armament & Systems
Alvand Type 21
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
  • 1 × 4.5 in (114 mm) Vickers Mark 8 gun
  • 2 × 20 mm Oerlikon guns (later 4)
  • 1 × 4-rail launcher for GWS-24 Sea Cat
  • 2 × 8-barrelled Knebworth Corvus countermeasures launchers
  • 4 × launchers for MM38 Exocet surface-surface missiles
  • 2 × 12.75 in (324 mm) 3-tube STWS-1 anti-submarine torpedo launchers
  • TKWA/MASS (Multi Ammunition Softkill System)
  • 2 x 4-cell Harpoon missile launchers
  • 1 x 6-cell LY-60N Hunting Eagle SAM launcher
  • 1 × Vulcan Phalanx 20mm CIWS
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 COGOG on 2 shafts; 2 × Tyne cruise turbines: 8,500 shp (6,300 kW); 2 × Olympus boost turbines: 50,000 shp (37,000 kW)
Change comparison vs
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Frequently Asked Questions

Which has greater displacement, the Alvand-class or Type 21-class?
The Type 21-class has greater displacement at 3,250 tons compared to the Alvand-class's 1,540 tons.
Which is faster, the Alvand-class or Type 21-class?
The Alvand-class is faster with a maximum speed of 39 knots compared to the Type 21-class's 37 knots.
Which has longer range, the Alvand-class or Type 21-class?
The Alvand-class has a longer range at 5,000 nautical miles compared to the Type 21-class's 4,000 nautical miles.
Which is longer, the Alvand-class or Type 21-class?
The Type 21-class is longer at 117.0 meters compared to the Alvand-class's 94.5 meters.
How many crew members do the Alvand-class and Type 21-class have?
The Type 21-class has a larger crew complement of 177 compared to the Alvand-class's 146 crew members.
Which has been built in greater numbers, the Alvand-class or Type 21-class?
The Type 21-class has been built in greater numbers with 8 vessels compared to 4 vessels of the Alvand-class.