Board of Longitude
E266373
The Board of Longitude was an 18th–19th century British government body established to encourage and reward practical methods for determining a ship’s longitude at sea, playing a key role in the development of modern navigation.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Board of Longitude canonical | 7 |
| Commissioners for the Discovery of the Longitude at Sea | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2433722 — 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: Board of Longitude Context triple: [Secretary of the Board of Longitude, partOf, Board of Longitude]
-
A.
Secretary of the Board of Longitude
The Secretary of the Board of Longitude was an official role in the British government responsible for administering and recording the work of the Board, which oversaw efforts to solve the problem of determining longitude at sea.
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B.
Royal Society
The Royal Society is the United Kingdom’s national academy of sciences, renowned as one of the world’s oldest and most prestigious scientific institutions dedicated to promoting excellence in science.
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C.
British South Sea Company
The British South Sea Company was an early 18th-century English trading and finance corporation notorious for its role in the South Sea Bubble and its involvement in the transatlantic slave trade.
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D.
British Association for the Advancement of Science
The British Association for the Advancement of Science was a 19th- and 20th-century learned society in the United Kingdom dedicated to promoting and organizing public engagement with scientific research and education.
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E.
Trinity House
Trinity House is a historic British maritime organization responsible for lighthouses, buoys, and the safety of navigation around the coasts of England, Wales, the Channel Islands, and Gibraltar.
- 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: Board of Longitude Target entity description: The Board of Longitude was an 18th–19th century British government body established to encourage and reward practical methods for determining a ship’s longitude at sea, playing a key role in the development of modern navigation.
-
A.
Secretary of the Board of Longitude
The Secretary of the Board of Longitude was an official role in the British government responsible for administering and recording the work of the Board, which oversaw efforts to solve the problem of determining longitude at sea.
-
B.
Royal Society
The Royal Society is the United Kingdom’s national academy of sciences, renowned as one of the world’s oldest and most prestigious scientific institutions dedicated to promoting excellence in science.
-
C.
British South Sea Company
The British South Sea Company was an early 18th-century English trading and finance corporation notorious for its role in the South Sea Bubble and its involvement in the transatlantic slave trade.
-
D.
British Association for the Advancement of Science
The British Association for the Advancement of Science was a 19th- and 20th-century learned society in the United Kingdom dedicated to promoting and organizing public engagement with scientific research and education.
-
E.
Trinity House
Trinity House is a historic British maritime organization responsible for lighthouses, buoys, and the safety of navigation around the coasts of England, Wales, the Channel Islands, and Gibraltar.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
British public board
ⓘ
government body ⓘ |
| activity |
commissioned publication of the Nautical Almanac
ⓘ
evaluated proposed methods for determining longitude ⓘ funded development of astronomical methods for longitude ⓘ funded development of marine timekeepers ⓘ sponsored sea trials of navigational instruments ⓘ |
| alsoKnownAs |
Board of Longitude
ⓘ
surface form:
Commissioners for the Discovery of the Longitude at Sea
|
| archivesHeldAt |
Cambridge University Library
ⓘ
National Maritime Museum ⓘ
surface form:
National Maritime Museum, Greenwich
|
| country |
Kingdom of Great Britain
ⓘ
United Kingdom of Great Britain and Ireland ⓘ |
| dissolved | 1828 ⓘ |
| field |
astronomy
ⓘ
cartography ⓘ horology ⓘ navigation ⓘ |
| hasMember |
Astronomer Royal
ⓘ
President of the Royal Society ⓘ leading astronomers ⓘ leading mathematicians ⓘ senior government officials ⓘ senior naval officers ⓘ |
| impact |
advanced precision navigation in the Age of Sail
ⓘ
contributed to safer long‑distance sea travel ⓘ strengthened British naval and commercial power ⓘ |
| inception | 1714 ⓘ |
| jurisdiction | British maritime navigation ⓘ |
| legalBasis |
Longitude Act
ⓘ
surface form:
Longitude Act 1714
|
| location |
London, England
ⓘ
surface form:
London
|
| meetsAt |
Royal Observatory, Greenwich
ⓘ
surface form:
Royal Greenwich Observatory
Royal Society ⓘ
surface form:
Royal Society, London
|
| notableAssociatedPerson |
Charles Green
ⓘ
Sir George Airy ⓘ
surface form:
George Airy
James Cook ⓘ John Harrison ⓘ Larcum Kendall ⓘ Nevil Maskelyne ⓘ Thomas Mudge ⓘ Tobias Mayer ⓘ William Wales ⓘ |
| notableWork |
support for John Harrison’s marine chronometers
ⓘ
support for lunar distance method of longitude ⓘ |
| offersPrize |
longitude reward of £10,000 for accuracy within one degree
ⓘ
longitude reward of £15,000 for accuracy within two‑thirds of a degree ⓘ longitude reward of £20,000 for accuracy within half a degree ⓘ |
| purpose |
to administer rewards and prizes for longitude solutions
ⓘ
to encourage practical methods for determining longitude at sea ⓘ |
| replacedBy | Admiralty Hydrographic Office ⓘ |
| timePeriod |
18th century
ⓘ
19th century ⓘ |
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: Board of Longitude Description of subject: The Board of Longitude was an 18th–19th century British government body established to encourage and reward practical methods for determining a ship’s longitude at sea, playing a key role in the development of modern navigation.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Commissioners for the Discovery of the Longitude at Sea