Type 21 frigate
E817689
The Type 21 frigate was a class of British Royal Navy general-purpose frigates introduced in the late 1960s, known for their high speed, light construction, and service during the Falklands War.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Type 21 frigate canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9594167 — 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: Type 21 frigate Context triple: [4.5 inch Mark 8 naval gun, fittedOn, Type 21 frigate]
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A.
Type 26 frigate
The Type 26 frigate is a class of advanced, multi-mission Royal Navy warships designed primarily for anti-submarine warfare and global combat operations.
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B.
Type 23 frigates
Type 23 frigates are a class of Royal Navy warships designed primarily for anti-submarine warfare, also used in general-purpose roles such as escort duties and maritime security operations.
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C.
Gepard-class frigate
The Gepard-class frigate is a class of Russian multi-role warships designed for patrol, escort, and anti-submarine operations, used both by the Russian Navy and for export.
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D.
FREMM frigate
The FREMM frigate is a class of advanced, multi-mission warships developed by France and Italy, designed for roles such as anti-submarine warfare, air defense, and land attack.
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E.
Álvaro de Bazán-class frigates
The Álvaro de Bazán-class frigates are a series of modern Spanish Navy air-defense warships equipped with the Aegis Combat System and advanced anti-air, anti-surface, and anti-submarine capabilities.
- 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: Type 21 frigate Target entity description: The Type 21 frigate was a class of British Royal Navy general-purpose frigates introduced in the late 1960s, known for their high speed, light construction, and service during the Falklands War.
-
A.
Type 26 frigate
The Type 26 frigate is a class of advanced, multi-mission Royal Navy warships designed primarily for anti-submarine warfare and global combat operations.
-
B.
Type 23 frigates
Type 23 frigates are a class of Royal Navy warships designed primarily for anti-submarine warfare, also used in general-purpose roles such as escort duties and maritime security operations.
-
C.
Gepard-class frigate
The Gepard-class frigate is a class of Russian multi-role warships designed for patrol, escort, and anti-submarine operations, used both by the Russian Navy and for export.
-
D.
FREMM frigate
The FREMM frigate is a class of advanced, multi-mission warships developed by France and Italy, designed for roles such as anti-submarine warfare, air defense, and land attack.
-
E.
Álvaro de Bazán-class frigates
The Álvaro de Bazán-class frigates are a series of modern Spanish Navy air-defense warships equipped with the Aegis Combat System and advanced anti-air, anti-surface, and anti-submarine capabilities.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Royal Navy ship class
ⓘ
frigate class ⓘ |
| airCapability |
Lynx helicopter
NERFINISHED
ⓘ
Wasp helicopter (early in service) NERFINISHED ⓘ |
| armament |
4.5-inch Mark 8 naval gun
ⓘ
Exocet anti-ship missiles (later in service) ⓘ Sea Cat surface-to-air missile system NERFINISHED ⓘ |
| beam | about 12.7 metres ⓘ |
| builder |
Vosper Thornycroft
NERFINISHED
ⓘ
Yarrow Shipbuilders NERFINISHED ⓘ |
| classLeadShip | HMS Amazon NERFINISHED ⓘ |
| conflictParticipatedIn | Falklands War NERFINISHED ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| decommissionedFromRoyalNavy | late 1980s ⓘ |
| designCharacteristic |
emphasis on speed over protection
ⓘ
flush-deck hull ⓘ |
| designedAs | general-purpose frigate ⓘ |
| displacement |
approximately 2,500 tons standard
ⓘ
approximately 3,000 tons full load ⓘ |
| draught | about 5.8 metres ⓘ |
| enteredService | early 1970s ⓘ |
| exportedAs | Tariq-class frigate (Pakistan Navy) NERFINISHED ⓘ |
| firstCommissionedUnit | HMS Amazon GENERATED ⓘ |
| hullMaterial | steel ⓘ |
| introducedInDecade | 1960s ⓘ |
| introducedInYear | 1969 ⓘ |
| length | about 117 metres ⓘ |
| maximumSpeed | about 32 knots ⓘ |
| notableFor |
high speed
ⓘ
light construction ⓘ service during the Falklands War ⓘ |
| notableLoss |
HMS Antelope
NERFINISHED
ⓘ
HMS Ardent NERFINISHED ⓘ |
| numberBuilt | 8 ⓘ |
| operator | Royal Navy ⓘ |
| postRoyalNavyOperator | Pakistan Navy NERFINISHED ⓘ |
| primaryRole | anti-submarine warfare ⓘ |
| propulsionType | COGOG ⓘ |
| sawActionIn | South Atlantic operations 1982 ⓘ |
| secondaryRole |
anti-air warfare
ⓘ
anti-surface warfare ⓘ |
| shipInClass |
HMS Active
NERFINISHED
ⓘ
HMS Alacrity NERFINISHED ⓘ HMS Amazon NERFINISHED ⓘ HMS Ambuscade NERFINISHED ⓘ HMS Antelope NERFINISHED ⓘ HMS Ardent NERFINISHED ⓘ HMS Arrow NERFINISHED ⓘ HMS Avenger NERFINISHED ⓘ |
| superstructureMaterial | aluminium ⓘ |
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: Type 21 frigate Description of subject: The Type 21 frigate was a class of British Royal Navy general-purpose frigates introduced in the late 1960s, known for their high speed, light construction, and service during the Falklands War.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.