Vanguard-class ballistic missile submarines
E69707
Vanguard-class ballistic missile submarines are the United Kingdom’s nuclear-powered, nuclear-armed submarines that form the seaborne leg of its strategic deterrent force.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Vanguard-class submarines | 3 |
| Vanguard-class ballistic missile submarines canonical | 2 |
| Vanguard-class ballistic missile submarine | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T552344 — 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: Vanguard-class ballistic missile submarines Context triple: [HMNB Clyde, hosts, Vanguard-class ballistic missile submarines]
-
A.
Astute-class submarine
The Astute-class submarine is a fleet of advanced nuclear-powered attack submarines built for the Royal Navy, known for their stealth, endurance, and sophisticated weapons and sensor systems.
-
B.
USS Nautilus
USS Nautilus was the world’s first operational nuclear-powered submarine, renowned for completing the first under-ice transit to the North Pole in 1958.
-
C.
USS Maryland (SSBN-738)
USS Maryland (SSBN-738) is an Ohio-class nuclear-powered ballistic missile submarine of the United States Navy, designed for strategic deterrence patrols.
-
D.
Sims-class destroyers
Sims-class destroyers were a group of U.S. Navy warships built just before World War II that featured improved machinery and armament over earlier destroyer classes and saw extensive wartime service.
-
E.
Trident nuclear missile system
The Trident nuclear missile system is the United Kingdom’s submarine-launched ballistic missile-based nuclear deterrent, carried by its Vanguard-class submarines as the core of its strategic defense.
- 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: Vanguard-class ballistic missile submarines Target entity description: Vanguard-class ballistic missile submarines are the United Kingdom’s nuclear-powered, nuclear-armed submarines that form the seaborne leg of its strategic deterrent force.
-
A.
Astute-class submarine
The Astute-class submarine is a fleet of advanced nuclear-powered attack submarines built for the Royal Navy, known for their stealth, endurance, and sophisticated weapons and sensor systems.
-
B.
USS Nautilus
USS Nautilus was the world’s first operational nuclear-powered submarine, renowned for completing the first under-ice transit to the North Pole in 1958.
-
C.
USS Maryland (SSBN-738)
USS Maryland (SSBN-738) is an Ohio-class nuclear-powered ballistic missile submarine of the United States Navy, designed for strategic deterrence patrols.
-
D.
Sims-class destroyers
Sims-class destroyers were a group of U.S. Navy warships built just before World War II that featured improved machinery and armament over earlier destroyer classes and saw extensive wartime service.
-
E.
Trident nuclear missile system
The Trident nuclear missile system is the United Kingdom’s submarine-launched ballistic missile-based nuclear deterrent, carried by its Vanguard-class submarines as the core of its strategic defense.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
ballistic missile submarine
ⓘ
nuclear-powered submarine ⓘ strategic deterrent platform ⓘ |
| armament |
Spearfish heavyweight torpedoes
ⓘ
surface form:
Spearfish heavyweight torpedo
Trident II D5 missile ⓘ
surface form:
Trident II D5 submarine-launched ballistic missile
|
| base | Faslane ⓘ |
| beam | approximately 12.8 metres ⓘ |
| builder |
Barrow-in-Furness shipyard
ⓘ
Vickers-Armstrongs ⓘ
surface form:
Vickers Shipbuilding and Engineering Ltd
|
| constructionStart | late 1980s ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| crewComplement |
approximately 135
ⓘ
approximately 160 including officers ⓘ |
| designFeature |
anechoic tiles for acoustic stealth
ⓘ
double-hull sections ⓘ |
| designPurpose | to carry Trident missile system ⓘ |
| displacementSubmerged | approximately 15900 tonnes ⓘ |
| draught | approximately 12 metres ⓘ |
| enteredService | 1990s ⓘ |
| flagCountry | United Kingdom ⓘ |
| formsPartOf |
Continuous At-Sea Deterrent
ⓘ
Trident nuclear missile system ⓘ
surface form:
United Kingdom strategic nuclear deterrent
|
| homePort | HMNB Clyde ⓘ |
| length | approximately 149.9 metres ⓘ |
| maximumSubmergedSpeed | over 25 knots ⓘ |
| missileTubes | 16 ⓘ |
| nationalProgram |
Nuclear weapons policy of the United Kingdom
ⓘ
surface form:
UK Trident programme
|
| nuclearCapability | nuclear-armed ⓘ |
| nuclearWarheadCarrier | yes ⓘ |
| numberOfUnitsBuilt | 4 ⓘ |
| operator | Royal Navy ⓘ |
| plannedSuccessorClass |
Dreadnought-class nuclear-powered ballistic missile submarines
ⓘ
surface form:
Dreadnought-class ballistic missile submarine
|
| primaryMissileSystem |
Trident II D5 missile
ⓘ
surface form:
Trident II D5
|
| propulsion | nuclear-powered ⓘ |
| reactorSupplier |
Rolls-Royce Limited
ⓘ
surface form:
Rolls-Royce
|
| reactorType | Pressurised water reactor ⓘ |
| replaced | Resolution-class ballistic missile submarine ⓘ |
| role |
ballistic missile launch platform
ⓘ
strategic nuclear deterrent ⓘ |
| serviceBranch | Royal Navy Submarine Service ⓘ |
| status | in active service ⓘ |
| strategicPolicyContext | Continuous At-Sea Deterrent policy of the UK government ⓘ |
| strategicRole | seaborne leg of UK nuclear triad ⓘ |
| unit |
HMS Vanguard
ⓘ
HMS Vengeance ⓘ HMS Victorious ⓘ HMS Vigilant ⓘ |
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: Vanguard-class ballistic missile submarines Description of subject: Vanguard-class ballistic missile submarines are the United Kingdom’s nuclear-powered, nuclear-armed submarines that form the seaborne leg of its strategic deterrent force.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Trident II D5
this entity surface form:
Vanguard-class ballistic missile submarine
this entity surface form:
Vanguard-class submarines
this entity surface form:
Vanguard-class submarines
this entity surface form:
Vanguard-class submarines