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Petya vs Type 21

Petya vs Type 21 at a glance — displacement 1,150 vs 3,250 tons, length 81 vs 117 m, speed 30 vs 37 knots, crew 90 vs 177.

Specifications
Petya Type 21
Origin 🇷🇺 Ex-USSR 🇬🇧 United Kingdom
Category Frigate Frigate
Type Light frigate Frigate
Manufacturer Kaliningrad Yantar shipyard Yarrow Shipbuilders
Year introduced 1965 1974
Number built 54 units 8 units
Estimated unit price NA $60 million
Displacement 1,150 tons 3,250 tons
Maximum speed 30.0 knots 37.0 knots
Range 4,870 nm at 10 knots 4,000 nm at 17 knots
Length 81.8 m 117.0 m
Beam 9.2 m 12.7 m
Crew 90 177
Performance Radar Chart
Armament & Systems
Petya Type 21
Armament
  • 4 x 76 mm guns (2x2)
  • 4 x RBU-6000 anti-submarine rocket launchers
  • 5 x 406 mm anti-submarine torpedo tubes
  • 1 x 3 533 mm torpedo tubes (export version)
  • 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 shaft CODAG: 2 gas turbines - 30,000 hp (22,000 kW), 1 diesel - 6,000 hp (4,500 kW) COGOG on 2 shafts; 2 × Tyne cruise turbines: 8,500 shp (6,300 kW); 2 × Olympus boost turbines: 50,000 shp (37,000 kW)
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Largest operators · in service
Former operators · 8 built
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Frequently Asked Questions

Which has greater displacement, the Petya-class or Type 21-class?
The Type 21-class has greater displacement at 3,250 tons compared to the Petya-class's 1,150 tons.
Which is faster, the Petya-class or Type 21-class?
The Type 21-class is faster with a maximum speed of 37 knots compared to the Petya-class's 30 knots.
Which has longer range, the Petya-class or Type 21-class?
The Petya-class has a longer range at 4,870 nautical miles compared to the Type 21-class's 4,000 nautical miles.
Which is longer, the Petya-class or Type 21-class?
The Type 21-class is longer at 117.0 meters compared to the Petya-class's 81.8 meters.
How many crew members do the Petya-class and Type 21-class have?
The Type 21-class has a larger crew complement of 177 compared to the Petya-class's 90 crew members.
Which has been built in greater numbers, the Petya-class or Type 21-class?
The Petya-class has been built in greater numbers with 54 vessels compared to 8 vessels of the Type 21-class.