Ryūjō-class aircraft carrier
E303318
The Ryūjō-class aircraft carrier was a small, lightly built Imperial Japanese Navy carrier of the interwar period, designed to exploit treaty limitations but later criticized for its stability and protection weaknesses.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ryūjō-class aircraft carrier canonical | 4 |
| Ryujo-class aircraft carrier | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2803721 — 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: Ryūjō-class aircraft carrier Context triple: [Japanese aircraft carrier Ryūjō, shipClass, Ryūjō-class aircraft carrier]
-
A.
Hōshō-class aircraft carrier
The Hōshō-class aircraft carrier was an Imperial Japanese Navy warship class that included Hōshō, one of the world’s earliest purpose-built aircraft carriers and a pioneer in naval aviation.
-
B.
Zuihō-class aircraft carrier
The Zuihō-class aircraft carrier was a small, fast Japanese light carrier class of World War II, converted from submarine tenders to provide air support for the Imperial Japanese Navy.
-
C.
Kaga-class aircraft carrier
The Kaga-class aircraft carrier was a planned class of Japanese aircraft carriers derived from the Izumo-class helicopter destroyers, intended to operate fixed-wing STOVL jets like the F-35B.
-
D.
Hiryū-class aircraft carrier
The Hiryū-class aircraft carrier was a class of Imperial Japanese Navy fleet carriers of World War II, exemplified by the carrier Hiryū, known for its role in early Pacific War operations including the Battle of Midway.
-
E.
Sōryū-class aircraft carrier
The Sōryū-class aircraft carrier was a class of fast, medium-sized Imperial Japanese Navy fleet carriers built in the late 1930s and used extensively during the early years of World War II in the Pacific.
- 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: Ryūjō-class aircraft carrier Target entity description: The Ryūjō-class aircraft carrier was a small, lightly built Imperial Japanese Navy carrier of the interwar period, designed to exploit treaty limitations but later criticized for its stability and protection weaknesses.
-
A.
Hōshō-class aircraft carrier
The Hōshō-class aircraft carrier was an Imperial Japanese Navy warship class that included Hōshō, one of the world’s earliest purpose-built aircraft carriers and a pioneer in naval aviation.
-
B.
Zuihō-class aircraft carrier
The Zuihō-class aircraft carrier was a small, fast Japanese light carrier class of World War II, converted from submarine tenders to provide air support for the Imperial Japanese Navy.
-
C.
Kaga-class aircraft carrier
The Kaga-class aircraft carrier was a planned class of Japanese aircraft carriers derived from the Izumo-class helicopter destroyers, intended to operate fixed-wing STOVL jets like the F-35B.
-
D.
Hiryū-class aircraft carrier
The Hiryū-class aircraft carrier was a class of Imperial Japanese Navy fleet carriers of World War II, exemplified by the carrier Hiryū, known for its role in early Pacific War operations including the Battle of Midway.
-
E.
Sōryū-class aircraft carrier
The Sōryū-class aircraft carrier was a class of fast, medium-sized Imperial Japanese Navy fleet carriers built in the late 1930s and used extensively during the early years of World War II in the Pacific.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Imperial Japanese Navy ship class
ⓘ
aircraft carrier class ⓘ |
| airGroupRole |
dive bombers
ⓘ
fighter aircraft ⓘ torpedo bombers ⓘ |
| constructionMaterial | steel hull ⓘ |
| countryOfOrigin |
Empire of Japan
ⓘ
linked to:
Imperial Japan
|
| criticizedFor |
poor stability in heavy seas
ⓘ
vulnerability to damage ⓘ |
| designedFor |
high aircraft capacity for its tonnage
ⓘ
operation of carrier‑borne aircraft ⓘ |
| designedToExploit |
London Naval Treaty limitations
ⓘ
linked to:
London Naval Treaty
Washington Naval Treaty limitations ⓘ |
| designPhilosophy | maximizing aircraft capacity within treaty tonnage limits ⓘ |
| designWeakness |
inadequate hull strength
ⓘ
insufficient metacentric height ⓘ low freeboard ⓘ |
| displacementClass | light aircraft carrier ⓘ |
| era | World War II era ⓘ |
| flightDeckType | full‑length flight deck ⓘ |
| historicalSignificance |
example of treaty‑driven carrier design compromises
ⓘ
illustrated risks of overloading light carrier hulls ⓘ |
| knownFor |
limited armor
ⓘ
limited reserve buoyancy ⓘ stability problems ⓘ weak protection ⓘ |
| navalArchitectureFeature |
enclosed hangar
ⓘ
single hangar deck (as built) ⓘ |
| navalBranch |
Japanese Combined Fleet
ⓘ
linked to:
Combined Fleet of the Imperial Japanese Navy
|
| navalDoctrineContext | Japanese carrier strike doctrine ⓘ |
| notableCharacteristic |
light construction
ⓘ
small size ⓘ top‑heavy design ⓘ |
| numberOfShipsCompleted | 1 ⓘ |
| numberOfShipsPlanned | 1 ⓘ |
| operator | Imperial Japanese Navy ⓘ |
| period | interwar period ⓘ |
| primaryArmamentType | carrier‑based aircraft ⓘ |
| propulsionType |
oil‑fired boilers
ⓘ
steam turbines ⓘ |
| secondaryArmamentType | dual‑purpose guns ⓘ |
| shipClassLeadShip | Japanese aircraft carrier Ryūjō ⓘ |
| superstructureType | island superstructure ⓘ |
| timePeriodOfService |
1930s
ⓘ
early 1940s ⓘ |
| treatyDisplacementLimit | 10000 tons standard (nominal design target) ⓘ |
| usedInConflict | Pacific War ⓘ |
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: Ryūjō-class aircraft carrier Description of subject: The Ryūjō-class aircraft carrier was a small, lightly built Imperial Japanese Navy carrier of the interwar period, designed to exploit treaty limitations but later criticized for its stability and protection weaknesses.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Ryūjō-class aircraft carrier