Walrus-class submarine
E530871
The Walrus-class submarine is a Dutch-built class of modern diesel-electric attack submarines known for their stealth, long-range patrol capabilities, and service with the Royal Netherlands Navy.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Walrus-class submarine canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5523437 — 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: Walrus-class submarine Context triple: [Netherlands Submarine Service, operates, Walrus-class submarine]
-
A.
Akula-class submarine
The Akula-class submarine is a series of nuclear-powered attack submarines developed by the Soviet Union during the Cold War, known for their improved stealth, speed, and advanced weaponry compared to earlier Soviet designs.
-
B.
Victor-class submarine
The Victor-class submarine was a series of Soviet nuclear-powered attack submarines developed during the Cold War for high-speed, deep-diving anti-submarine and anti-surface warfare.
-
C.
Ula-class submarines
Ula-class submarines are a fleet of small, modern diesel-electric attack submarines operated by Norway, optimized for stealthy coastal and littoral operations.
-
D.
Oscar-class submarine
The Oscar-class submarine is a Soviet-designed nuclear-powered cruise missile submarine class built during the Cold War to attack NATO carrier battle groups and strategic targets at sea.
-
E.
Kilo-class submarine
The Kilo-class submarine is a series of Russian-designed diesel-electric attack submarines known for their stealth and are operated by several navies worldwide, including the Indian Navy.
- 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: Walrus-class submarine Target entity description: The Walrus-class submarine is a Dutch-built class of modern diesel-electric attack submarines known for their stealth, long-range patrol capabilities, and service with the Royal Netherlands Navy.
-
A.
Akula-class submarine
The Akula-class submarine is a series of nuclear-powered attack submarines developed by the Soviet Union during the Cold War, known for their improved stealth, speed, and advanced weaponry compared to earlier Soviet designs.
-
B.
Victor-class submarine
The Victor-class submarine was a series of Soviet nuclear-powered attack submarines developed during the Cold War for high-speed, deep-diving anti-submarine and anti-surface warfare.
-
C.
Ula-class submarines
Ula-class submarines are a fleet of small, modern diesel-electric attack submarines operated by Norway, optimized for stealthy coastal and littoral operations.
-
D.
Oscar-class submarine
The Oscar-class submarine is a Soviet-designed nuclear-powered cruise missile submarine class built during the Cold War to attack NATO carrier battle groups and strategic targets at sea.
-
E.
Kilo-class submarine
The Kilo-class submarine is a series of Russian-designed diesel-electric attack submarines known for their stealth and are operated by several navies worldwide, including the Indian Navy.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
diesel-electric attack submarine
ⓘ
submarine class ⓘ |
| armament |
submarine-launched anti-ship missiles
ⓘ
torpedo tubes ⓘ torpedoes ⓘ |
| builder |
Rotterdamsche Droogdok Maatschappij
NERFINISHED
ⓘ
Royal Schelde NERFINISHED ⓘ |
| countryOfOrigin | Netherlands ⓘ |
| crewComplement | approximately 50 to 60 ⓘ |
| designedFor |
long-range operations
ⓘ
operations in littoral waters ⓘ operations in open ocean ⓘ stealth ⓘ |
| displacement |
approximately 2800 tonnes surfaced
ⓘ
approximately 3200 tonnes submerged ⓘ |
| hasHullNumberPrefix | S ⓘ |
| hasNameShip |
HNLMS Bruinvis
NERFINISHED
ⓘ
HNLMS Dolfijn NERFINISHED ⓘ HNLMS Walrus NERFINISHED ⓘ HNLMS Zeeleeuw NERFINISHED ⓘ |
| hasUnit |
HNLMS Bruinvis
NERFINISHED
ⓘ
HNLMS Dolfijn NERFINISHED ⓘ HNLMS Walrus NERFINISHED ⓘ HNLMS Zeeleeuw NERFINISHED ⓘ |
| hullConfiguration | single-hull ⓘ |
| nationality | Dutch ⓘ |
| navalService | Royal Netherlands Navy NERFINISHED ⓘ |
| operator | Royal Netherlands Navy NERFINISHED ⓘ |
| powerplant |
diesel engines
ⓘ
electric motor ⓘ |
| primaryRole |
anti-submarine warfare
ⓘ
anti-surface warfare ⓘ intelligence gathering ⓘ long-range patrol ⓘ |
| propulsion | diesel-electric ⓘ |
| rangeCharacteristic | long-range patrol capability ⓘ |
| serviceEntry | late 1980s ⓘ |
| status | in service ⓘ |
| stealthFeatures |
low acoustic signature
ⓘ
reduced radar cross-section when surfaced ⓘ |
| submarineType | attack submarine ⓘ |
| successorClassPlanned | Walrus-class replacement program ⓘ |
| usedBy | Netherlands NERFINISHED ⓘ |
| usedFor |
reconnaissance
ⓘ
special forces deployment ⓘ surveillance ⓘ |
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: Walrus-class submarine Description of subject: The Walrus-class submarine is a Dutch-built class of modern diesel-electric attack submarines known for their stealth, long-range patrol capabilities, and service with the Royal Netherlands Navy.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.