UGM-73 Poseidon
E796084
The UGM-73 Poseidon was a U.S. Navy submarine-launched ballistic missile (SLBM) developed during the Cold War, notable for its multiple independently targetable reentry vehicles (MIRVs) and enhanced range and payload over its predecessor.
All labels observed (2)
| Label | Occurrences |
|---|---|
| UGM-73 Poseidon canonical | 2 |
| Poseidon C3 SLBM | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9387486 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: UGM-73 Poseidon Context triple: [Polaris missile system, successor, UGM-73 Poseidon]
-
A.
UGM-84 Harpoon anti-ship missiles
The UGM-84 Harpoon is a submarine-launched, all-weather, over-the-horizon anti-ship cruise missile widely used by Western navies for engaging surface vessels.
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B.
SS-5 Skean MRBM
The SS-5 Skean MRBM was a Soviet medium-range ballistic missile deployed during the Cold War for nuclear delivery against intermediate-distance targets.
-
C.
UGM-133A
UGM-133A is the U.S. Navy’s Trident II D5 submarine-launched ballistic missile, a key component of the American nuclear deterrent.
-
D.
Trident II D5 missile
The Trident II D5 missile is a submarine-launched, nuclear-capable ballistic missile used by the U.S. and U.K. navies as a key component of their strategic deterrent forces.
-
E.
Oniks cruise missile
The Oniks cruise missile is a Russian supersonic anti-ship and land-attack missile known for its high speed, sea-skimming flight profile, and use on various naval platforms.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: UGM-73 Poseidon Target entity description: The UGM-73 Poseidon was a U.S. Navy submarine-launched ballistic missile (SLBM) developed during the Cold War, notable for its multiple independently targetable reentry vehicles (MIRVs) and enhanced range and payload over its predecessor.
-
A.
UGM-84 Harpoon anti-ship missiles
The UGM-84 Harpoon is a submarine-launched, all-weather, over-the-horizon anti-ship cruise missile widely used by Western navies for engaging surface vessels.
-
B.
SS-5 Skean MRBM
The SS-5 Skean MRBM was a Soviet medium-range ballistic missile deployed during the Cold War for nuclear delivery against intermediate-distance targets.
-
C.
UGM-133A
UGM-133A is the U.S. Navy’s Trident II D5 submarine-launched ballistic missile, a key component of the American nuclear deterrent.
-
D.
Trident II D5 missile
The Trident II D5 missile is a submarine-launched, nuclear-capable ballistic missile used by the U.S. and U.K. navies as a key component of their strategic deterrent forces.
-
E.
Oniks cruise missile
The Oniks cruise missile is a Russian supersonic anti-ship and land-attack missile known for its high speed, sea-skimming flight profile, and use on various naval platforms.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
U.S. Navy weapon system
ⓘ
submarine-launched ballistic missile ⓘ |
| abbreviation | MIRV NERFINISHED ⓘ |
| belongsToProgram | U.S. Navy Fleet Ballistic Missile program NERFINISHED ⓘ |
| category |
ballistic missiles of the United States
ⓘ
nuclear weapons of the United States ⓘ submarine-launched ballistic missiles of the United States ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| deploymentEnvironment |
submarine
ⓘ
underwater launch ⓘ |
| deploymentMode | submerged launch ⓘ |
| designation | UGM-73 NERFINISHED ⓘ |
| designedFor | long-range nuclear strike ⓘ |
| designedToCounter | Soviet Union strategic forces ⓘ |
| era | Cold War era ⓘ |
| feature | multiple independently targetable reentry vehicles ⓘ |
| guidanceSystem | inertial guidance ⓘ |
| improvementOver |
UGM-27 Polaris in payload
ⓘ
UGM-27 Polaris in range ⓘ |
| launchMethod | vertical launch from submarine tube ⓘ |
| launchPlatform |
Benjamin Franklin-class submarine
NERFINISHED
ⓘ
James Madison-class submarine NERFINISHED ⓘ Lafayette-class submarine NERFINISHED ⓘ Ohio-class predecessor SSBNs ⓘ ballistic missile submarine ⓘ |
| missionProfile | strategic strike ⓘ |
| namedAfter |
Greek god of the sea
ⓘ
Poseidon NERFINISHED ⓘ |
| natoReportingName | Poseidon NERFINISHED ⓘ |
| nuclearDeliverySystem | sea-based ⓘ |
| operator | United States Navy ⓘ |
| payloadConfiguration | multiple warheads ⓘ |
| predecessor | UGM-27 Polaris NERFINISHED ⓘ |
| propulsion | two-stage solid-fuel rocket ⓘ |
| role |
second-strike weapon
ⓘ
strategic deterrent ⓘ |
| serviceBranch | U.S. Navy NERFINISHED ⓘ |
| stageCount | 2 ⓘ |
| strategicRole | assured retaliation ⓘ |
| strategicUse | part of nuclear triad sea-based leg ⓘ |
| successor | UGM-96 Trident I NERFINISHED ⓘ |
| threatType | intercontinental nuclear threat ⓘ |
| type | sea-launched ballistic missile ⓘ |
| usedIn | Cold War NERFINISHED ⓘ |
| user | United States Strategic Command predecessors ⓘ |
| warheadType | thermonuclear warhead ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: UGM-73 Poseidon Description of subject: The UGM-73 Poseidon was a U.S. Navy submarine-launched ballistic missile (SLBM) developed during the Cold War, notable for its multiple independently targetable reentry vehicles (MIRVs) and enhanced range and payload over its predecessor.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Poseidon C3 SLBM