Naval Hydrographic Department
E340687
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Naval Hydrographic Department canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3227649 — 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: Naval Hydrographic Department Context triple: [Indian Navy, hasComponent, Naval Hydrographic Department]
-
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.
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.
-
D.
Naval Meteorological and Oceanographic Department
The Naval Meteorological and Oceanographic Department is the Indian Navy’s specialized agency responsible for providing meteorological, oceanographic, and related environmental support to naval operations and planning.
-
E.
Department of Naval Services
The Department of Naval Services was a former Canadian government department responsible for administering and overseeing the country’s naval forces before its functions were absorbed into the Department of National Defence.
- 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: Naval Hydrographic Department Target entity description: 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.
-
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.
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.
-
D.
Naval Meteorological and Oceanographic Department
The Naval Meteorological and Oceanographic Department is the Indian Navy’s specialized agency responsible for providing meteorological, oceanographic, and related environmental support to naval operations and planning.
-
E.
Department of Naval Services
The Department of Naval Services was a former Canadian government department responsible for administering and overseeing the country’s naval forces before its functions were absorbed into the Department of National Defence.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Indian Navy organization
ⓘ
Indian government agency ⓘ hydrographic office ⓘ |
| abbreviation | NHD ⓘ |
| cooperatesWith |
International Hydrographic Organization
ⓘ
World Meteorological Organization ⓘ other national hydrographic offices ⓘ |
| country | India ⓘ |
| dataUsedFor |
coastal zone management
ⓘ
marine resource management ⓘ navigation safety ⓘ port development ⓘ |
| field |
hydrography
ⓘ
marine cartography ⓘ nautical charting ⓘ oceanography ⓘ |
| headquartersLocation |
Dehradun
ⓘ
India ⓘ Uttarakhand ⓘ |
| jurisdiction |
Indian maritime approaches
ⓘ
exclusive economic zone of India ⓘ territorial waters of India ⓘ |
| language | English ⓘ |
| mission |
to ensure safe navigation in Indian waters
ⓘ
to support maritime defence operations through hydrographic information ⓘ |
| operatedBy | Indian Navy ⓘ |
| parentOrganization | Indian Navy ⓘ |
| partOf | Ministry of Defence (India) ⓘ |
| produces |
electronic navigational charts
ⓘ
list of lights ⓘ nautical almanacs ⓘ nautical charts ⓘ notices to mariners ⓘ paper navigational charts ⓘ sailing directions ⓘ tide tables ⓘ |
| providesServiceTo |
Indian Navy
ⓘ
fishing vessels ⓘ merchant shipping ⓘ port authorities in India ⓘ |
| responsibleFor |
hydrographic surveys in Indian waters
ⓘ
production of official nautical charts of India ⓘ production of official nautical publications of India ⓘ safety of navigation support in Indian waters ⓘ surveying India’s maritime zones ⓘ updating of Indian nautical charts ⓘ updating of Indian nautical publications ⓘ |
| sector | maritime ⓘ |
| usesVessels | hydrographic survey ships of the Indian Navy ⓘ |
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: Naval Hydrographic Department Description of subject: 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.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.