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Castle-class corvette
Photo: Royal Navy official photographer · Wikimedia Commons · Public domain
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Castle-classcorvette

Corvettes · United Kingdom · 1943
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Castle-classcorvette

⚙ Flower-class corvette variant
Castle-class corvette
Castle-class corvette Photo: Royal Navy official photographer · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Firepower
40
Speed & Agility
50
Sensors
30
Anti-Surface Capability
45
Affordability
70
Littoral Suitability
60
Survivability
55
Versatility
65
Technology
35
Endurance
60
Origin United Kingdom
ManufacturerHarland and Wolff, Swan Hunter, Fleming and Ferguson, Ferguson Marine, Smiths Dock Company, John Crown & Sons Ltd, Henry Robb, A. & J. Inglis, Blyth Shipbuilding Company, Caledon Shipbuilding & Engineering Company, Ailsa Shipbuilding Company
CategoryCorvettes
EraWorld War II
In service1943–1944
Operators5 countries
Quantity44
Data Quality88%
MASS(Military Archive Scoring System)
50
Corvettes MASS Rating
3/9
World War II
104/253
All-Time
Corvettes · 10 axes scored
Firepower
40
Speed & Agility
50
Sensors
30
Anti-Surface Capability
45
Affordability
70
Littoral Suitability
60
Survivability
55
Versatility
65
Technology
35
Endurance
60
ⓘ Regardless of era, the same scoring system applies to all units in the corvettes category.
01 / Overview
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
CORVETTES · WORLD WAR II
3
PERFORMANCE/PRICE
87
UNIT COST (2025 USD)
—
50
corvettes category
ⓘ Performance/Price and MASS score are computed across all units in the corvettes category, regardless of era.
02 / Specs & Design
◎Identification5MOD.5
  • Hull ClassificationCastle-class corvette
  • Ship TypeCorvette
  • Builder / ShipyardMultiple British and Canadian shipyards
  • Ships in Class44
  • In ServiceNo
◈Displacement2MOD.2
  • Light Displacement1,060 t
  • Full Load Displacement1,076.96 t
▣Dimensions3MOD.3
  • Length (overall)68.6 m
  • Beam9.9 m
  • Draft3 m
◇Complement1MOD.1
  • Total Complement112
◆Propulsion9MOD.9
  • PropulsionSteam Turbine
  • Arrangement (CODAG/COGAG…)Triple-expansion steam engine with water-tube boilers
  • Number of Engines1
  • Shaft Power2,048 kW
  • Shafts / Screws1
  • Top Speed16.5 kn
  • Cruise Speed10 kn
  • Range9,500
  • Nuclear-PoweredNo
▤Gun Armament4MOD.4
  • Main GunQF 4 inch Mk XIX naval gun
  • Main Gun Calibre102 mm
  • Main Gun Count1
  • Secondary GunsOerlikon 20 mm cannon
▲Underwater Warfare4MOD.4
◎Aviation5MOD.5
◈Sensors & Combat Systems4MOD.4
▣Survivability5MOD.5
◇Fleet Status7MOD.7
  • Completed44
  • Under Construction0
  • Planned95
  • Cancelled51
  • Lost3
  • Retired41
  • Preserved0
03 / History
SERVICE LIFESPANStill in Service
  1. 1939First deployment: World War II
  2. 1943Production started
  3. 1944Production ended
83
years in service
1
years in production
44
units produced
5
countries operating
ⓘ The producing country still actively operates it.
04 / Operators
📖 TERMS ON THIS PAGE3terms
Anti-Submarine Warfare. Capability to detect, track, and engage submarines.
Sonar system installed on the hull of a ship, used for underwater detection and navigation by emitting and receiving sound waves.
A mechanical device that converts steam pressure into rotational energy, used to drive shipboard generators or propulsion systems.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Corvettes entry →