Admiralty Hydrographic Office

E914470

cartographic organization government agency hydrographic office

The Admiralty Hydrographic Office was the British Royal Navy’s chart-making and nautical surveying authority, responsible for producing and updating official maritime charts and related navigational publications.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (7)

Label	Occurrences
United Kingdom Hydrographic Office	3
Admiralty Office	2
Admiralty Hydrographic Office canonical	1
Admiralty tide tables	1
Royal Navy hydrographic surveys	1
UK Hydrographer	1
UK Hydrographic Office	1

How this entity was disambiguated

This entity first appeared as the object of triple T11253299 — 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: Admiralty Hydrographic Office
Context triple: [Board of Longitude, replacedBy, Admiralty Hydrographic Office]

A. Naval Hydrographic Office
The Naval Hydrographic Office is a specialized unit responsible for charting, surveying, and providing nautical information to support the maritime operations and navigation safety of the Philippine Navy.
B. Naval Hydrographic Service
The Naval Hydrographic Service is the Argentine Navy’s specialized agency responsible for producing nautical charts, conducting hydrographic and oceanographic surveys, and providing maritime navigation information.
C. Naval Hydrographic Department
The Naval Hydrographic Department is the Indian Navy’s specialized agency responsible for surveying and charting India’s maritime waters and producing official nautical charts and publications.
D. Naval Hydrographic Department
The Naval Hydrographic Department is a specialized unit of the Royal Thai Navy responsible for hydrographic surveying, nautical charting, and related maritime navigation services for Thailand’s waters.
E. United States Hydrographic Office
The United States Hydrographic Office was a U.S. Navy agency responsible for producing nautical charts, sailing directions, and other navigational publications to support safe maritime navigation.
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: Admiralty Hydrographic Office
Target entity description: The Admiralty Hydrographic Office was the British Royal Navy’s chart-making and nautical surveying authority, responsible for producing and updating official maritime charts and related navigational publications.

A. Naval Hydrographic Office
The Naval Hydrographic Office is a specialized unit responsible for charting, surveying, and providing nautical information to support the maritime operations and navigation safety of the Philippine Navy.
B. Naval Hydrographic Service
The Naval Hydrographic Service is the Argentine Navy’s specialized agency responsible for producing nautical charts, conducting hydrographic and oceanographic surveys, and providing maritime navigation information.
C. Naval Hydrographic Department
The Naval Hydrographic Department is the Indian Navy’s specialized agency responsible for surveying and charting India’s maritime waters and producing official nautical charts and publications.
D. Naval Hydrographic Department
The Naval Hydrographic Department is a specialized unit of the Royal Thai Navy responsible for hydrographic surveying, nautical charting, and related maritime navigation services for Thailand’s waters.
E. United States Hydrographic Office
The United States Hydrographic Office was a U.S. Navy agency responsible for producing nautical charts, sailing directions, and other navigational publications to support safe maritime navigation.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	cartographic organization ⓘ government agency ⓘ hydrographic office ⓘ
affiliation	British government ⓘ linked to: UK government
collects	bathymetric data ⓘ coastal topographic data ⓘ hydrographic data ⓘ tidal data ⓘ
country	United Kingdom ⓘ
employerOf	cartographers ⓘ draughtsmen ⓘ engravers ⓘ hydrographer of the navy ⓘ naval surveyors ⓘ
field	hydrography ⓘ marine navigation ⓘ nautical charting ⓘ oceanography ⓘ
hasPurpose	improvement of safety of navigation ⓘ support of Royal Navy operations ⓘ support of merchant shipping ⓘ
industry	maritime navigation ⓘ
language	English ⓘ
locatedIn	United Kingdom ⓘ
operatedBy	Royal Navy ⓘ
partOf	Admiralty ⓘ linked to: The Admiralty
precededBy	informal Admiralty charting activities ⓘ
product	Admiralty charts ⓘ linked to: Admiralty nautical charts nautical publications ⓘ
regulates	standards for British official nautical charts ⓘ
responsibleFor	production of nautical charts ⓘ publication of Notices to Mariners ⓘ publication of nautical almanacs ⓘ publication of sailing directions ⓘ publication of tide tables ⓘ updating nautical charts ⓘ
serviceArea	British territorial waters ⓘ colonial waters of the British Empire ⓘ worldwide oceans ⓘ
successor	United Kingdom Hydrographic Office ⓘ linked to: Admiralty Hydrographic Office
usedBy	Royal Navy ⓘ explorers ⓘ fishing fleets ⓘ merchant mariners ⓘ survey vessels ⓘ
uses	naval surveying ships ⓘ oceanographic instruments ⓘ triangulation and sounding methods ⓘ

How these facts were elicited