Walrus-class submarine

E530871

diesel-electric attack submarine submarine class

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.

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All labels observed (5)

Label	Occurrences
Walrus class	4
Walrus-class submarine canonical	3
Walrus-class submarine program	2
Walrus-class attack submarine	1
Walrus-class submarine series	1

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 ⓘ Royal Schelde ⓘ
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 ⓘ HNLMS Dolfijn ⓘ HNLMS Walrus ⓘ HNLMS Zeeleeuw ⓘ
hasUnit	HNLMS Bruinvis ⓘ HNLMS Dolfijn ⓘ HNLMS Walrus ⓘ HNLMS Zeeleeuw ⓘ
hullConfiguration	single-hull ⓘ
nationality	Dutch ⓘ
navalService	Royal Netherlands Navy ⓘ
operator	Royal Netherlands Navy ⓘ
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 ⓘ
usedFor	reconnaissance ⓘ special forces deployment ⓘ surveillance ⓘ

How these facts were elicited

Referenced by (11)

Full triples — surface form annotated when it differs from this entity's canonical label.

Netherlands Submarine Service → operates → Walrus-class submarine ⓘ

Netherlands Submarine Service → equipmentType → Walrus-class submarine ⓘ

Netherlands Submarine Service → plannedToReplace → Walrus-class submarine ⓘ

HNLMS Walrus → class → Walrus class ⓘ