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Alarm-class torpedo gunboat
Photo: Unknown author · Wikimedia Commons · Public domain
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Alarm-classtorpedogunboat

Patrol Boats & Fast Attack Craft · United Kingdom · 1893
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Alarm-classtorpedogunboat

Alarm-class torpedo gunboat
Alarm-class torpedo gunboat Photo: Unknown author · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Speed
30
Firepower
25
Agility
40
Sensors
10
Range
50
Sea-Keeping
45
Affordability
60
Survivability
30
Versatility
40
Technology
20
Origin United Kingdom
CategoryPatrol Boats & Fast Attack Craft
EraPre-WWI / Industrial Age
In service1893–1893
Operators1 countries
Quantity11
Data Quality84%
33
Patrol Boats & Fast Attack Craft MASS Rating
50/114
Pre-WWI / Industrial Age
275/387
All-Time
Patrol Boats & Fast Attack Craft · 10 axes scored
Speed
30
Firepower
25
Agility
40
Sensors
10
Range
50
Sea-Keeping
45
Affordability
60
Survivability
30
Versatility
40
Technology
20
ⓘ Regardless of era, the same scoring system applies to all units in the patrol boats & fast attack craft category.
01 / Overview
Alarm-class torpedo gunboat
Production
1893–1893
Quantity
11
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
PATROL BOATS & FAST ATTACK CRAFT · PRE-WWI / INDUSTRIAL AGE
50
PERFORMANCE/PRICE
78
UNIT COST (2025 USD)
—
33
patrol boats & fast attack craft category
ⓘ Performance/Price and MASS score are computed across all units in the patrol boats & fast attack craft category, regardless of era.
02 / Specs & Design
◎Identification5MOD.5
  • Laid Down1891
  • Launched1892
  • Commissioned1893
  • Ships in Class11
  • In ServiceYes
◈Displacement2MOD.2
  • Light Displacement823 t
  • Full Load Displacement822.96 t
▣Dimensions3MOD.3
  • Length (overall)73.8 m
  • Beam8.2 m
  • Draft3.8 m
◇Complement1MOD.1
  • Total Complement91
◆Propulsion5MOD.5
  • Propulsion Type*2 triple-expansion steam engines *2 screws
  • Number of Engines2
  • Shaft Power2,609 kW
  • Shafts / Screws2
  • Top Speed18.7 kn
▤Gun Armament2MOD.2
  • Main Gun Calibre119 mm
  • Main Gun Count2
⬢Underwater Warfare3MOD.3
03 / History
SERVICE LIFESPANRetired
  1. 1893Production started
133
years in service
0
years in production
11
units produced
0
countries operating
ⓘ 1 countries retired it.
04 / Operators
Operator Countries1country
📚 Sources
📖 ENCYCLOPEDIA Browse the Patrol Boats & Fast Attack Craft entry →