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BL 5.5 inch Mk I gun
Photo: Flickr user Marcin Wichary https://www.flickr.com/photos/mwichary · Wikimedia Commons · CC BY 2.0
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BL5.5inchMkIgun

Naval Guns · United Kingdom · 1913
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BL5.5inchMkIgun

BL 5.5 inch Mk I gun
BL 5.5 inch Mk I gun Photo: Flickr user Marcin Wichary https://www.flickr.com/photos/mwichary · Wikimedia Commons · CC BY 2.0
* Absolute score — assessed within category · no era adjustment
Rate of Fire
30
Range
40
Lethality
50
Accuracy
45
Ammunition Versatility
35
Multi-Role Capability
20
Reliability
70
Automation
10
Technology
25
Cost-Effectiveness
60
Origin United Kingdom
CategoryNaval Guns
EraPre-WWI / Industrial Age
In service1913–1954
Operators1 countries
Quantity81
Data Quality85%
MASS(Military Archive Scoring System)
39
Naval Guns MASS Rating
42/131
Pre-WWI / Industrial Age
157/280
All-Time
Naval Guns · 10 axes scored
Rate of Fire
30
Range
40
Lethality
50
Accuracy
45
Ammunition Versatility
35
Multi-Role Capability
20
Reliability
70
Automation
10
Technology
25
Cost-Effectiveness
60
ⓘ Regardless of era, the same scoring system applies to all units in the naval guns category.
01 / Overview
BL 5.5 inch Mk I gun
Category
Production
1913–1954
Quantity
81
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
NAVAL GUNS · PRE-WWI / INDUSTRIAL AGE
42
PERFORMANCE/PRICE
78
UNIT COST (2025 USD)
—
39
naval guns category
ⓘ Performance/Price and MASS score are computed across all units in the naval guns category, regardless of era.
02 / Specs & Design
◎General6MOD.6
  • Weapon TypeNaval gun, Coastal defence
  • Service Entry Year1913
  • Weight6,330 kg
  • Length6.985 m
  • Diameter140 mm
  • In ServiceYes
◈Performance3MOD.3
  • Range16.276 km
  • Maximum Range (gun)16.3 km
  • Rate of Fire (gun)12
▣Platform2MOD.2
◇Production1MOD.1
  • Total Production81
03 / History
SERVICE LIFESPANRetired
  1. 1913Production started
  2. 1914First deployment: World War I
  3. 1954Production ended
113
years in service
41
years in production
81
units produced
0
countries operating
ⓘ 1 countries retired it.
04 / Operators
Operator Countries1country
📖 TERMS ON THIS PAGE2terms
Surface ship from which a torpedo is launched, typically a destroyer, cruiser, or dedicated torpedo boat.
Ship-launched: a torpedo designed to be deployed from surface warships using onboard launch tubes or deck-mounted launchers.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Naval Guns entry →