United States Coast Survey

E246428

cartographic organization federal scientific agency hydrographic survey organization

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.

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

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 ⓘ Julius Erasmus Hilgard ⓘ linked to: Eugene W. Hilgard
dissolved	1878 ⓘ
employed	Alexander Dallas Bache ⓘ Benjamin Peirce ⓘ George Davidson ⓘ Julius Erasmus Hilgard ⓘ linked to: Eugene W. Hilgard Louis Agassiz ⓘ
established	1807 ⓘ
establishedBy	United States Congress ⓘ
field	cartography ⓘ coastal engineering ⓘ geodesy ⓘ hydrography ⓘ oceanography ⓘ
followedBy	United States Coast and Geodetic Survey ⓘ linked to: National Geodetic Survey
headquartersLocation	Washington, D.C. ⓘ
legalBasis	Act of Congress of 1807 ⓘ linked to: Embargo Act of 1807
mergedInto	United States Coast and Geodetic Survey ⓘ linked to: United States Coast 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

Referenced by (7)

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

National Geodetic Survey → foundedAs → United States Coast Survey ⓘ

subject linked to: NGS

National Geodetic Survey → predecessor → United States Coast and Geodetic Survey ⓘ

subject linked to: NGS