Data Quality85%
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
Fly-class gunboat
Category
Country
Prime contractor
Production
1915–1916
Quantity
16
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
PATROL BOATS & FAST ATTACK CRAFT · WORLD WAR I
6
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 ClassificationFly class
- Ship TypeRiver gunboat
- Builder / ShipyardYarrow Shipbuilders
- Laid Down1915
- Launched1915
- Commissioned1915
- Ships in Class16
- In ServiceYes
◈Displacement3MOD.3
- Light Displacement98 t
- Standard Displacement98 t
- Full Load Displacement99.568 t
▣Dimensions3MOD.3
- Length (overall)38.405 m
- Beam6.096 m
- Draft0.61 m
◇Complement2MOD.2
- Total Complement22
- Air Wing Personnel0
◆Propulsion7MOD.7
- Propulsion Type1 shaft VTE, single yarrow type mixed firing boiler,
- Arrangement (CODAG/COGAG…)Single shaft with triple expansion engine
- Number of Engines1
- Shaft Power130 kW
- Shafts / Screws1
- Top Speed9.5 kn
- Nuclear-PoweredNo
▤Gun Armament4MOD.4
- Main GunQF 4 inch naval gun Mk IV/XII/XXII
- Main Gun Calibre102 mm
- Main Gun Count1
- Secondary Guns1 × 12-pounder (76-mm) gun, 1 × 6-pounder (57-mm) gun, 1 × 3-pounder (47-mm) gun, 1 × 2-pounder (40-mm) pom-pom, 4 or 5 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
- Completed16
- Active0
- Under Construction0
- Planned16
- Cancelled0
- Lost3
- Retired13
- Preserved0
◆Armour3MOD.3
- ArmourNone
- Belt Armour0 mm
- Deck Armour0 mm
03 / History
SERVICE LIFESPANRetired
- 1914First deployment: World War I
- 1915Production started
- 1916Production ended
111
years in service
1
years in production
16
units produced
0
countries operating
ⓘ The producing country no longer actively operates it. 1 countries retired it.
05 / MASS Score
PATROL BOATS & FAST ATTACK CRAFT RANKING Patrol Boats & Fast Attack Craft · World War I
MASS RANKINGSMASS ↗
266PATROL BOATS & FAST ATTACK CRAFT6WORLD WAR I · PATROL BOATS & FAST ATTACK CRAFT795UNITED KINGDOM · ALL WEAPONS66PERFORMANCE/PRICE · PATROL BOATS & FAST ATTACK CRAFT
ⓘ Rankings are within thePatrol Boats & Fast Attack Craftcategory.
📚 Sources