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8 inch Mk. VI railway gun
Photo: US war department · Wikimedia Commons · Public domain
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8inchMk.VIrailwaygun

Naval Guns · United States · 1941
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8inchMk.VIrailwaygun

8 inch Mk. VI railway gun
8 inch Mk. VI railway gun Photo: US war department · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Rate of Fire
30
Range
60
Lethality
75
Accuracy
50
Ammunition Versatility
40
Multi-Role Capability
10
Reliability
65
Automation
5
Technology
30
Cost-Effectiveness
55
Origin United States
CategoryNaval Guns
EraWorld War II
In service1941–1946
Operators1 countries
Quantity32
Data Quality85%
MASS(Military Archive Scoring System)
45
Naval Guns MASS Rating
18/20
World War II
104/280
All-Time
Naval Guns · 10 axes scored
Rate of Fire
30
Range
60
Lethality
75
Accuracy
50
Ammunition Versatility
40
Multi-Role Capability
10
Reliability
65
Automation
5
Technology
30
Cost-Effectiveness
55
ⓘ Regardless of era, the same scoring system applies to all units in the naval guns category.
01 / Overview
8 inch Mk. VI railway gun
Category
Production
1941–1946
Quantity
32
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
NAVAL GUNS · WORLD WAR II
18
PERFORMANCE/PRICE
68
UNIT COST (2025 USD)
—
45
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 Typerailway artillery
  • Service Entry Year1941
  • Weight85,275 kg
  • Length9.37 m
  • Diameter203 mm
  • In ServiceYes
◈Guidance & Homing4MOD.4
▣Performance3MOD.3
  • Propulsion Typerailroad-mounted
  • Maximum Range (gun)32.3 km
  • Rate of Fire (gun)2
◇Warhead3MOD.3
◆Platform5MOD.5
▤Production2MOD.2
  • Total Production32
  • Operators1
⬢Warhead Detail1MOD.1
  • Detonation Mechanism / Fuzehydro-pneumatic
03 / History
SERVICE LIFESPANRetired
  1. 1939First deployment: World War II
  2. 1941Production started
  3. 1946Production ended
85
years in service
5
years in production
32
units produced
0
countries operating
ⓘ 1 countries retired it.
04 / Operators
Operator Countries1country
📖 TERMS ON THIS PAGE1terms
Launch platform classification indicating a torpedo is deployed from land-based or ship-based systems rather than aircraft or submarines.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Naval Guns entry →