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Atada-class minesweeper
Photo: Japan Maritime Self-Defense Force · Wikimedia Commons · CC BY 4.0
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Atada-classminesweeper

Mine Countermeasures Vessels (MCM) · Japan · 1956
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Atada-classminesweeper

Atada-class minesweeper
Atada-class minesweeper Photo: Japan Maritime Self-Defense Force · Wikimedia Commons · CC BY 4.0
* Absolute score — assessed within category · no era adjustment
Mine-Hunting Effectiveness
30
Sonar & Sensors
25
Low Signature
40
Clearance Rate
35
UUV Integration
0
Endurance
45
Reliability
70
Survivability
30
Technology
20
Cost-Effectiveness
75
Origin Japan
CategoryMine Countermeasures Vessels (MCM)
EraEarly Cold War
In service1956–1956
Operators2 countries
Quantity2
Data Quality85%
33
Mine Countermeasures Vessels (MCM) MASS Rating
31/38
Early Cold War
122/173
All-Time
Mine Countermeasures Vessels (MCM) · 10 axes scored
Mine-Hunting Effectiveness
30
Sonar & Sensors
25
Low Signature
40
Clearance Rate
35
UUV Integration
0
Endurance
45
Reliability
70
Survivability
30
Technology
20
Cost-Effectiveness
75
ⓘ Regardless of era, the same scoring system applies to all units in the mine countermeasures vessels (mcm) category.
01 / Overview
Atada-class minesweeper
Country
Production
1956–1956
Quantity
2
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
MINE COUNTERMEASURES VESSELS (MCM) · EARLY COLD WAR
31
PERFORMANCE/PRICE
57
UNIT COST (2025 USD)
—
33
mine countermeasures vessels (mcm) category
ⓘ Performance/Price and MASS score are computed across all units in the mine countermeasures vessels (mcm) category, regardless of era.
02 / Specs & Design
◎Identification3MOD.3
  • Ship TypeMinesweeper
  • Commissioned1956
  • Ships in Class2
◈Displacement & Dimensions5MOD.5
  • Light Displacement240 t
  • Full Load Displacement260 t
  • Length37.5 m
  • Beam6.8 m
  • Draft2.1 m
▣Capacity2MOD.2
◇Propulsion3MOD.3
  • Propulsion Type*2 × diesel electric engines *2 × shafts
  • Top Speed14 kn
  • Complement (crew)33
◆Aviation2MOD.2
▤Self-Defense3MOD.3
03 / History
SERVICE LIFESPANStill in Service
  1. 1956Production started
70
years in service
0
years in production
2
units produced
2
countries operating
ⓘ The producing country still actively operates it.
04 / Operators
Operator Countries2country
📚 Sources
📖 ENCYCLOPEDIA Browse the Mine Countermeasures Vessels (MCM) entry →