Data Quality86%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the mine countermeasures vessels (mcm) category.
01 / Overview
Ajonpää-class minesweeper
Country
Prime contractor
Production
1941–1942
Quantity
2
Operators
Conflicts
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
MINE COUNTERMEASURES VESSELS (MCM) · WORLD WAR II
11
PERFORMANCE/PRICE
78
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the mine countermeasures vessels (mcm) category, regardless of era.
02 / Specs & Design
◎Identification6MOD.6
- Ship TypeMinesweeper
- BuilderDenmark
- Commissioned1941
- Ships in Class2
- RoleMine Countermeasures
- In ServiceYes
◈Displacement & Dimensions5MOD.5
- Light Displacement52 t
- Full Load Displacement52 t
- Length20 m
- Beam5.3 m
- Draft1.7 m
▣Capacity7MOD.7
- Troop Capacity0
- Vehicle Capacity0
- Cargo Volume0
- Cargo Deadweight0 t
- Well DeckNo
- Landing Craft Carried0
- Ro-Ro CapabilityNo
◇Propulsion3MOD.3
- Propulsion Typediesel
- Shaft Power149 kW
- Top Speed10 kn
◆Aviation4MOD.4
- Embarked Helicopters0
- HangarNo
- Flight DeckNo
- Fixed-Wing / VSTOL0
▤Self-Defense3MOD.3
- Main Gun20 mm Madsen AA
- Electronic WarfareNo
- Decoy LaunchersNo
⬢Fleet Status8MOD.8
- Completed2
- Active0
- Under Construction0
- Planned0
- Cancelled0
- Lost0
- Retired2
- Preserved0
03 / History
SERVICE LIFESPANStill in Service
- 1939First deployment: World War II
- 1941Production started
- 1942Production ended
85
years in service
1
years in production
2
units produced
1
countries operating
04 / Conflicts
AJONPÄÄ-CLASS MINESWEEPER · CONFLICTS SERVED IN0% win·100% loss
Total Conflicts
1
Victories
0
Ongoing
0
Losses
1
ⓘ Shown only from conflicts recorded in our database.
05 / Operators
Ajonpää-class minesweeperSALES1records
| Year | Buyer | Quantity | Amount | Present Value (2025) |
|---|---|---|---|---|
| — |  Finland | 2 | — | — |
ⓘ "Present Value" is an estimated amount adjusted for inflation.
06 / MASS Score
MINE COUNTERMEASURES VESSELS (MCM) RANKING Mine Countermeasures Vessels (MCM) · World War II
MASS RANKINGSMASS ↗
131MINE COUNTERMEASURES VESSELS (MCM)11WORLD WAR II · MINE COUNTERMEASURES VESSELS (MCM)31DENMARK · ALL WEAPONS69PERFORMANCE/PRICE · MINE COUNTERMEASURES VESSELS (MCM)
ⓘ Rankings are within theMine Countermeasures Vessels (MCM)category.
📚 Sources