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OTO/Ansaldo 135 mm/45 gun
Photo: Unknown author · Wikimedia Commons · Public domain
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OTO/Ansaldo135mm/45gun

Naval Guns · Italy · 1940
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OTO/Ansaldo135mm/45gun

OTO/Ansaldo 135 mm/45 gun
OTO/Ansaldo 135 mm/45 gun Photo: Unknown author · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Rate of Fire
60
Range
70
Lethality
85
Accuracy
75
Ammunition Versatility
65
Multi-Role Capability
30
Reliability
90
Automation
20
Technology
50
Cost-Effectiveness
80
Origin Italy
ManufacturerOTO Melara
CategoryNaval Guns
EraWorld War II
In service1940
Operators1 countries
Data Quality85%
MASS(Military Archive Scoring System)
65
Naval Guns MASS Rating
1/20
World War II
24/280
All-Time
Naval Guns · 10 axes scored
Rate of Fire
60
Range
70
Lethality
85
Accuracy
75
Ammunition Versatility
65
Multi-Role Capability
30
Reliability
90
Automation
20
Technology
50
Cost-Effectiveness
80
ⓘ Regardless of era, the same scoring system applies to all units in the naval guns category.
01 / Overview
OTO/Ansaldo 135 mm/45 gun
Category
Country
Prime contractor
Production
1940–
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
NAVAL GUNS · WORLD WAR II
1
PERFORMANCE/PRICE
87
UNIT COST (2025 USD)
—
65
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 Year1940
  • Weight6,010 kg
  • Length6.075 m
  • Diameter135 mm
  • In ServiceNo
◈Guidance & Homing4MOD.4
▣Performance2MOD.2
  • Maximum Range (gun)19.6 km
  • Rate of Fire (gun)6
◇Warhead2MOD.2
◆Platform5MOD.5
03 / History
SERVICE LIFESPANStill in Service
  1. 1939First deployment: World War II
  2. 1940Production started
86
years in service
1
countries operating
ⓘ The producing country still actively operates 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 →