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12 inch/35 Mark II gun
Photo: Joseph Nash · Wikimedia Commons · Public domain
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12inch/35MarkIIgun

Naval Guns · United States · 1910
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12inch/35MarkIIgun

12 inch/35 Mark II gun
12 inch/35 Mark II gun Photo: Joseph Nash · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Rate of Fire
30
Range
40
Lethality
65
Accuracy
50
Ammunition Versatility
20
Multi-Role Capability
10
Reliability
75
Automation
5
Technology
30
Cost-Effectiveness
70
Origin United States
ManufacturerWashington Navy Yard
CategoryNaval Guns
EraPre-WWI / Industrial Age
In service1910–1918
Operators2 countries
Quantity200
Data Quality85%
MASS(Military Archive Scoring System)
40
Naval Guns MASS Rating
32/131
Pre-WWI / Industrial Age
143/280
All-Time
Naval Guns · 10 axes scored
Rate of Fire
30
Range
40
Lethality
65
Accuracy
50
Ammunition Versatility
20
Multi-Role Capability
10
Reliability
75
Automation
5
Technology
30
Cost-Effectiveness
70
ⓘ Regardless of era, the same scoring system applies to all units in the naval guns category.
01 / Overview
12 inch/35 Mark II gun
Category
Prime contractor
Production
1910–1918
Quantity
200
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
NAVAL GUNS · PRE-WWI / INDUSTRIAL AGE
32
PERFORMANCE/PRICE
76
UNIT COST (2025 USD)
—
40
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 Typelarge-calibre naval gun
  • Service Entry Year1910
  • Weight51,000 kg
  • Length10.67 m
  • Diameter305 mm
  • In ServiceYes
◈Guidance & Homing1MOD.1
▣Performance2MOD.2
  • Maximum Range (gun)20 km
  • Rate of Fire (gun)2
◇Warhead1MOD.1
  • Warhead Weight331 kg
◆Platform2MOD.2
03 / History
SERVICE LIFESPANRetired
  1. 1910Production started
  2. 1918Production ended
116
years in service
8
years in production
200
units produced
0
countries operating
ⓘ 2 countries retired it.
04 / Operators
📖 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 →