Data Quality85%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the light / escort carriers category.
01 / Overview
Ruler-class escort carrier
Category
Country
Prime contractor
Production
1943–1943
Quantity
23
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
LIGHT / ESCORT CARRIERS · WORLD WAR II
2
PERFORMANCE/PRICE
87
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the light / escort carriers category, regardless of era.
02 / Specs & Design
◎Identification4MOD.4
- Ship Typeescort carrier
- Builder / ShipyardSeattle‑Tacoma Shipbuilding Corporation
- Ships in Class23
- In ServiceYes
◈Displacement1MOD.1
- Standard Displacement11,607 t
▣Dimensions3MOD.3
- Length (overall)150 m
- Beam21.18 m
- Draft7.77 m
◇Complement1MOD.1
- Total Complement646
◆Propulsion7MOD.7
- PropulsionSteam Turbine
- Arrangement (CODAG/COGAG…)1 shaft, 2 boilers, steam turbine
- Number of Engines2
- Shaft Power8,500 kW
- Shafts / Screws1
- Top Speed17 kn
- Nuclear-PoweredNo
▤Gun Armament4MOD.4
- Main Gun2 × 4‑inch (102 mm) dual‑purpose guns
- Main Gun Calibre102 mm
- Main Gun Count2
- Secondary Guns16 × 40 mm Bofors AA, 20 × 20 mm Oerlikon AA
⬢Missile Armament3MOD.3
▲Underwater Warfare3MOD.3
◎Aviation4MOD.4
- HangarYes
- Flight DeckYes
- Fixed-Wing Aircraft24
- UAV CapabilityNo
◈Sensors & Combat Systems3MOD.3
▣Survivability4MOD.4
◇Fleet Status4MOD.4
- Completed23
- Planned23
- Cancelled0
- Lost2
03 / History
SERVICE LIFESPANStill in Service
- 1943Production started
83
years in service
0
years in production
23
units produced
2
countries operating
ⓘ The producing country still actively operates it.
05 / MASS Score
LIGHT / ESCORT CARRIERS RANKING Light / Escort Carriers · World War II
MASS RANKINGSMASS ↗
2LIGHT / ESCORT CARRIERS2WORLD WAR II · LIGHT / ESCORT CARRIERS477UNITED KINGDOM · ALL WEAPONS1PERFORMANCE/PRICE · LIGHT / ESCORT CARRIERS
ⓘ Rankings are within theLight / Escort Carrierscategory.
📖 TERMS ON THIS PAGE5terms
Anti-Submarine Warfare. Capability to detect, track, and engage submarines.
The upper deck of an aircraft carrier, equipped for aircraft takeoff, landing, and maintenance operations.
Cruise missiles designed to strike land targets from naval platforms, typically launched from ships or submarines.
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