Maeslantkering movable storm surge barrier

E107753

civil engineering structure flood defense structure movable storm surge barrier storm surge barrier

The Maeslantkering movable storm surge barrier is a massive, computer-controlled flood defense structure near Rotterdam that protects the Netherlands from North Sea storm surges as part of the Delta Works system.

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All labels observed (4)

Label	Occurrences
Maeslantkering storm surge barrier	3
Maeslantkering movable storm surge barrier canonical	2
Maeslant storm surge barrier	1
Maeslantkering infrastructure	1

How this entity was disambiguated

This entity first appeared as the object of triple T857686 — 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: Maeslantkering movable storm surge barrier
Context triple: [Delta Works, notableStructure, Maeslantkering movable storm surge barrier]

A. Oosterscheldekering storm surge barrier
The Oosterscheldekering storm surge barrier is a massive movable flood defense structure in the Netherlands, renowned as the largest and most complex component of the Delta Works coastal protection system.
B. Thames Barrier
The Thames Barrier is a large movable flood defense structure on the River Thames in London, designed to protect the city from tidal surges and flooding.
C. Stormvloedkering Hollandse IJssel
Stormvloedkering Hollandse IJssel is a major storm surge barrier in the Netherlands that protects low-lying areas along the Hollandse IJssel river from flooding as part of the Delta Works.
D. Delta Works
Delta Works is a vast system of dams, storm surge barriers, and other hydraulic structures in the Netherlands designed to protect low-lying areas from the sea and river flooding.
E. Volkerakdam
Volkerakdam is a major Dutch dam and water management structure that forms part of the Delta Works system, helping to control water levels and protect against flooding in the Rhine–Meuse–Scheldt delta.
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: Maeslantkering movable storm surge barrier
Target entity description: The Maeslantkering movable storm surge barrier is a massive, computer-controlled flood defense structure near Rotterdam that protects the Netherlands from North Sea storm surges as part of the Delta Works system.

A. Oosterscheldekering storm surge barrier
The Oosterscheldekering storm surge barrier is a massive movable flood defense structure in the Netherlands, renowned as the largest and most complex component of the Delta Works coastal protection system.
B. Thames Barrier
The Thames Barrier is a large movable flood defense structure on the River Thames in London, designed to protect the city from tidal surges and flooding.
C. Stormvloedkering Hollandse IJssel
Stormvloedkering Hollandse IJssel is a major storm surge barrier in the Netherlands that protects low-lying areas along the Hollandse IJssel river from flooding as part of the Delta Works.
D. Delta Works
Delta Works is a vast system of dams, storm surge barriers, and other hydraulic structures in the Netherlands designed to protect low-lying areas from the sea and river flooding.
E. Volkerakdam
Volkerakdam is a major Dutch dam and water management structure that forms part of the Delta Works system, helping to control water levels and protect against flooding in the Rhine–Meuse–Scheldt delta.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	civil engineering structure ⓘ flood defense structure ⓘ movable storm surge barrier ⓘ storm surge barrier ⓘ
alsoKnownAs	Maeslant storm surge barrier ⓘ linked to: Maeslantkering movable storm surge barrier Maeslantkering movable storm surge barrier ⓘ
ballJointDiameter	10 metres ⓘ
ballJointWeight	approximately 680 tonnes ⓘ
closureFrequency	expected once every 10 years approximately ⓘ
closureThreshold	storm surge of 3 metres above NAP at Rotterdam ⓘ
constructionStart	1991 ⓘ
controlCenter	Keringhuis ⓘ
controlledBy	computer system ⓘ
country	Netherlands ⓘ
designedBy	Rijkswaterstaat ⓘ
designType	ball-joint gate ⓘ floating sector gate ⓘ
engineeringCategory	mega engineering project ⓘ
gateHeight	about 22 metres ⓘ
hasPart	ball joints ⓘ two dry docks ⓘ two floating gates ⓘ two retaining walls ⓘ
hasVisitorCenter	Keringhuis visitor centre ⓘ linked to: Keringhuis
lengthOfEachGate	210 metres ⓘ
locatedIn	Netherlands ⓘ South Holland ⓘ
locatedNear	Rotterdam ⓘ
locatedOn	Nieuwe Waterweg ⓘ
material	concrete ⓘ steel ⓘ
nearbyCity	Hoek van Holland ⓘ Maassluis ⓘ
notableFor	one of the largest moving structures on Earth ⓘ part of the last major project of the Delta Works ⓘ
officialOpeningBy	Queen Beatrix of the Netherlands ⓘ linked to: Beatrix of the Netherlands
opened	1997 ⓘ
operator	Rijkswaterstaat ⓘ
partOf	Delta Works ⓘ
protects	Rhine–Meuse–Scheldt delta ⓘ Rotterdam ⓘ
protectsFrom	North Sea storm surges ⓘ coastal flooding ⓘ
purpose	maintain open access to Port of Rotterdam ⓘ protect the Rotterdam region from storm surges ⓘ
riverMouth	Rhine–Meuse delta ⓘ linked to: Rhine–Meuse–Scheldt delta
spanWhenClosed	about 360 metres ⓘ
status	operational ⓘ

How these facts were elicited