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12"/50 Bethlehem
Photo: Unknown author · Wikimedia Commons · Public domain
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12"/50Bethlehem

Naval Guns · United States · 1915
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12"/50Bethlehem

12"/50 Bethlehem
12"/50 Bethlehem Photo: Unknown author · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Rate of Fire
30
Range
45
Lethality
75
Accuracy
50
Ammunition Versatility
20
Multi-Role Capability
10
Reliability
85
Automation
5
Technology
25
Cost-Effectiveness
70
Origin United States
ManufacturerBethlehem Steel
CategoryNaval Guns
EraWorld War I
In service1915–1956
Operators3 countries
Quantity18
Data Quality88%
MASS(Military Archive Scoring System)
43
Naval Guns MASS Rating
8/25
World War I
119/280
All-Time
Naval Guns · 10 axes scored
Rate of Fire
30
Range
45
Lethality
75
Accuracy
50
Ammunition Versatility
20
Multi-Role Capability
10
Reliability
85
Automation
5
Technology
25
Cost-Effectiveness
70
ⓘ Regardless of era, the same scoring system applies to all units in the naval guns category.
01 / Overview
12"/50 Bethlehem
Category
Prime contractor
Production
1915–1956
Quantity
18
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
NAVAL GUNS · WORLD WAR I
8
PERFORMANCE/PRICE
78
UNIT COST (2025 USD)
—
43
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
  • Service Entry Year1915
  • Weight66,000 kg
  • Length15.24 m
  • Diameter305 mm
  • In ServiceYes
◈Guidance & Homing4MOD.4
▣Performance3MOD.3
  • Range21.95 km
  • Maximum Range (gun)21.95 km
  • Rate of Fire (gun)2
◇Warhead3MOD.3
◆Platform4MOD.4
▤Production2MOD.2
  • Total Production18
  • Operators3
03 / History
SERVICE LIFESPANRetired
  1. 1914First deployment: World War I
  2. 1915Production started
  3. 1940Sale: Brazil (6 units)
  4. 1956Production ended
111
years in service
41
years in production
18
units produced
0
countries operating
ⓘ 3 countries retired it.
04 / Operators
12"/50 BethlehemSALES2records
YearBuyerQuantityAmountPresent Value (2025)
1940Brazil6——
—Chile6——
ⓘ "Present Value" is an estimated amount adjusted for inflation.
📖 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 →