United States Coast Survey
E246428
The United States Coast Survey was a 19th-century U.S. federal scientific agency responsible for charting the nation’s coasts and producing nautical maps to support safe navigation and commerce.
All labels observed (3)
| Label | Occurrences |
|---|---|
| United States Coast and Geodetic Survey | 4 |
| United States Coast Survey canonical | 2 |
| U.S. Coast and Geodetic Survey | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2209825 — 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: United States Coast Survey Context triple: [National Geodetic Survey, foundedAs, United States Coast Survey]
-
A.
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.
-
B.
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.
-
C.
National Geodetic Survey
The National Geodetic Survey is the U.S. federal agency responsible for defining, maintaining, and providing access to the national coordinate system used for mapping, charting, and navigation.
-
D.
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.
-
E.
United States Lighthouse Board
The United States Lighthouse Board was a 19th-century federal agency that modernized and oversaw the construction, maintenance, and operation of lighthouses and other navigational aids along U.S. coasts and waterways.
- 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: United States Coast Survey Target entity description: The United States Coast Survey was a 19th-century U.S. federal scientific agency responsible for charting the nation’s coasts and producing nautical maps to support safe navigation and commerce.
-
A.
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.
-
B.
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.
-
C.
National Geodetic Survey
The National Geodetic Survey is the U.S. federal agency responsible for defining, maintaining, and providing access to the national coordinate system used for mapping, charting, and navigation.
-
D.
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.
-
E.
United States Lighthouse Board
The United States Lighthouse Board was a 19th-century federal agency that modernized and oversaw the construction, maintenance, and operation of lighthouses and other navigational aids along U.S. coasts and waterways.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
cartographic organization
ⓘ
federal scientific agency ⓘ hydrographic survey organization ⓘ |
| activityPeriod | 19th century ⓘ |
| contributedTo |
development of American geodesy
ⓘ
development of American oceanography ⓘ standardization of U.S. coastal charts ⓘ |
| country | United States of America ⓘ |
| director |
Alexander Dallas Bache
ⓘ
Benjamin Peirce ⓘ Ferdinand Rudolph Hassler ⓘ Eugene W. Hilgard ⓘ
surface form:
Julius Erasmus Hilgard
|
| dissolved | 1878 ⓘ |
| employed |
Alexander Dallas Bache
ⓘ
Benjamin Peirce ⓘ George Davidson ⓘ Eugene W. Hilgard ⓘ
surface form:
Julius Erasmus Hilgard
Louis Agassiz ⓘ |
| established | 1807 ⓘ |
| establishedBy | United States Congress ⓘ |
| field |
cartography
ⓘ
coastal engineering ⓘ geodesy ⓘ hydrography ⓘ oceanography ⓘ |
| followedBy |
National Geodetic Survey
ⓘ
surface form:
United States Coast and Geodetic Survey
|
| headquartersLocation | Washington, D.C. ⓘ |
| legalBasis |
Embargo Act of 1807
ⓘ
surface form:
Act of Congress of 1807
|
| mergedInto |
United States Coast Survey
self-linksurface differs
ⓘ
surface form:
United States Coast and Geodetic Survey
|
| notableWork |
coast pilot guides
ⓘ
nautical charts of the Gulf of Mexico ⓘ nautical charts of the U.S. Atlantic coast ⓘ nautical charts of the U.S. Pacific coast ⓘ |
| operatedIn |
Atlantic Ocean
ⓘ
Gulf of Mexico ⓘ Pacific Ocean ⓘ U.S. coastal waters ⓘ |
| parentAgency | United States Department of the Treasury ⓘ |
| precededBy | none ⓘ |
| primaryPurpose |
charting the coasts of the United States
ⓘ
producing nautical charts ⓘ supporting maritime commerce ⓘ supporting safe navigation ⓘ |
| usedInstrument |
chronometer
ⓘ
lead line ⓘ sextant ⓘ theodolite ⓘ |
| usedMethod |
geodetic surveying
ⓘ
hydrographic sounding ⓘ triangulation surveying ⓘ |
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: United States Coast Survey Description of subject: The United States Coast Survey was a 19th-century U.S. federal scientific agency responsible for charting the nation’s coasts and producing nautical maps to support safe navigation and commerce.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
National Geodetic Survey
this entity surface form:
United States Coast and Geodetic Survey
this entity surface form:
U.S. Coast and Geodetic Survey
this entity surface form:
United States Coast and Geodetic Survey
this entity surface form:
United States Coast and Geodetic Survey
this entity surface form:
United States Coast and Geodetic Survey