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UGM-27 Polaris
Photo: U.S. Department of Defense · Wikimedia Commons · Public domain Use of this image does not imply endorsement by the U.S. Department of Defense (DoD).
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UGM-27Polaris

SLBM · United States · 1961
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UGM-27Polaris

UGM-27 Polaris
UGM-27 Polaris Photo: U.S. Department of Defense · Wikimedia Commons · Public domain Use of this image does not imply endorsement by the U.S. Department of Defense (DoD).
* Absolute score — assessed within category · no era adjustment
Range
60
Payload / MIRV
40
Accuracy
55
Platform Survivability
70
BMD Penetration
30
Readiness
75
Reliability
65
Second-Strike Value
80
Strategic Impact
85
Technology
70
Origin United States
ManufacturerLockheed Corporation
CategorySLBM
EraEarly Cold War
In service1961–1980
Operators3 countries
Data Quality86%
MASS(Military Archive Scoring System)
64
SLBM MASS Rating
4/6
Early Cold War
22/30
All-Time
SLBM · 10 axes scored
Range
60
Payload / MIRV
40
Accuracy
55
Platform Survivability
70
BMD Penetration
30
Readiness
75
Reliability
65
Second-Strike Value
80
Strategic Impact
85
Technology
70
ⓘ Regardless of era, the same scoring system applies to all units in the slbm category.
01 / Overview
UGM-27 Polaris
Category
Prime contractor
Production
1961–1980
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
SLBM · EARLY COLD WAR
4
PERFORMANCE/PRICE
87
UNIT COST (2025 USD)
—
64
slbm category
ⓘ Performance/Price and MASS score are computed across all units in the slbm category, regardless of era.
02 / Specs & Design
◎General7MOD.7
  • Missile ClassSLBM
  • Service Entry Year1961
  • DesignerLockheed Corporation
  • Length9.85 m
  • Diameter1.37 m
  • Launch Weight16,100 kg
  • In ServiceYes
◈Propulsion6MOD.6
▣Performance6MOD.6
◇Accuracy & Re-Entry5MOD.5
◆Warhead7MOD.7
▤Basing5MOD.5
⬢Production3MOD.3
  • Total Production1,444
  • Operators2
  • First Test1960
▲Warhead Detail2MOD.2
  • Detonation Mechanism / Fuzenuclear
  • Explosive Filler Typethermonuclear
03 / History
SERVICE LIFESPANStill in Service
  1. 1960Entered service
  2. 1961Production started
  3. 1980Production ended
65
years in service
19
years in production
3
countries operating
ⓘ The producing country still actively operates it.
04 / Operators
📖 TERMS ON THIS PAGE8terms
Designation for an ICBM equipped with a canister launcher, enabling rapid deployment and reduced exposure during launch.
A missile launch method where the missile is ejected from its launch tube by gas pressure before the rocket motor ignites, typically used in submarine-launched ballistic missiles.
Guidance system combining inertial navigation (self-contained motion tracking) with GPS (satellite-based positioning) for precise trajectory correction in ballistic missiles.
MIRV (Multiple Independently targetable Reentry Vehicle) is a ballistic missile payload that carries several warheads, each capable of being aimed at separate targets after reentry.
Relating to or using nuclear energy, typically fission, for propulsion or power generation in military vessels.
Propellant consisting of a solid mixture of fuel and oxidizer, enabling long-term storage and immediate launch readiness.
Designation for intercontinental ballistic missiles (ICBMs) deployed and launched from submerged submarines.
Relating to nuclear weapons that derive destructive power from both fission and fusion reactions, typically used in intercontinental ballistic missiles.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the SLBM entry →