Data Quality88%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the patrol boats & fast attack craft category.
01 / Overview
Atami-class gunboat
Category
Country
Production
1929–1930
Quantity
2
Operators
Conflicts
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
PATROL BOATS & FAST ATTACK CRAFT · INTERWAR PERIOD
19
PERFORMANCE/PRICE
78
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the patrol boats & fast attack craft category, regardless of era.
02 / Specs & Design
◎Identification8MOD.8
- Hull Classificationgunboat
- Ship TypeRiverine gunboat
- Builder / ShipyardFujinagata, Osaka
- Laid Down1928
- Launched1929
- Commissioned1929
- Ships in Class2
- In ServiceYes
◈Displacement3MOD.3
- Light Displacement206 t
- Standard Displacement225 t
- Full Load Displacement206 t
▣Dimensions4MOD.4
- Length (overall)46.3 m
- Length (waterline)45.3 m
- Beam6.9 m
- Draft1.1 m
◇Complement2MOD.2
- Total Complement77
- Air Wing Personnel0
◆Propulsion7MOD.7
- Propulsion Typesteam
- Arrangement (CODAG/COGAG…)2 × shafts
- Number of Engines1
- Shaft Power2 kW
- Shafts / Screws2
- Top Speed16 kn
- Nuclear-PoweredNo
▤Gun Armament4MOD.4
- Main Gun7.9 cm/28 cal. gun
- Main Gun Calibre79 mm
- Main Gun Count1
- Secondary Guns13.2 mm Hotchkiss M1929 machine gun, five 7.7 mm machine guns
⬢Missile Armament4MOD.4
▲Underwater Warfare4MOD.4
- Torpedo Tubes0
- ASW CapabilityNo
- Hull-Mounted SonarNo
- Towed Array SonarNo
◎Aviation5MOD.5
- Embarked Helicopters0
- HangarNo
- Flight DeckNo
- Fixed-Wing Aircraft0
- UAV CapabilityNo
◈Sensors & Combat Systems3MOD.3
▣Survivability5MOD.5
- CBRN CitadelNo
- DegaussingNo
- Hull Materialsteel
- Stealth ShapingNo
- Automated Damage ControlNo
◇Fleet Status8MOD.8
- Completed2
- Active0
- Under Construction0
- Planned2
- Cancelled0
- Lost0
- Retired2
- Preserved0
◆Armour3MOD.3
- Armournone
- Belt Armour0 mm
- Deck Armour0 mm
03 / History
SERVICE LIFESPANStill in Service
- 1929Production started
- 1930Production ended
- 1937First deployment: Second Sino-Japanese War
97
years in service
1
years in production
2
units produced
3
countries operating
ⓘ The producing country still actively operates it.
04 / Conflicts
ATAMI-CLASS GUNBOAT · CONFLICTS SERVED IN0% win
Total Conflicts
1
Victories
0
Ongoing
0
Losses
0
ⓘ Shown only from conflicts recorded in our database.
05 / Operators
Operator Countries3country
Atami-class gunboatSALES1records
| Year | Buyer | Quantity | Amount | Present Value (2025) |
|---|---|---|---|---|
| — |  Taiwan | 2 | — | — |
ⓘ "Present Value" is an estimated amount adjusted for inflation.
06 / MASS Score
PATROL BOATS & FAST ATTACK CRAFT RANKING Patrol Boats & Fast Attack Craft · Interwar Period
MASS RANKINGSMASS ↗
217PATROL BOATS & FAST ATTACK CRAFT19INTERWAR PERIOD · PATROL BOATS & FAST ATTACK CRAFT348JAPAN · ALL WEAPONS66PERFORMANCE/PRICE · PATROL BOATS & FAST ATTACK CRAFT
ⓘ Rankings are within thePatrol Boats & Fast Attack Craftcategory.
📚 Sources