Fort Trumbull (Third System reconstruction)

E283043

19th-century fortification Third System coastal fortification masonry fort

Fort Trumbull (Third System reconstruction) is a 19th-century masonry coastal fortification in New London, Connecticut, rebuilt under the U.S. Army’s Third System program to strengthen seacoast defenses.

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

All labels observed (3)

Label	Occurrences
Fort Trumbull (Revolutionary War-era fort)	1
Fort Trumbull (Second System fort)	1
Fort Trumbull (Third System reconstruction) canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T2618010 — 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: Fort Trumbull (Third System reconstruction)
Context triple: [Third System of US seacoast defense, hasPart, Fort Trumbull (Third System reconstruction)]

A. Fort Wadsworth
Fort Wadsworth is a historic former military installation and coastal defense fortification located at the Narrows in New York Harbor, now part of the Gateway National Recreation Area.
B. Fort Hamilton
Fort Hamilton is a 19th-century British coastal artillery fort in Hamilton, Bermuda, built to defend the harbor and now preserved as a historic site and tourist attraction.
C. Fort Hamilton
Fort Hamilton is a historic U.S. Army installation in Brooklyn, New York, guarding the entrance to New York Harbor at the Verrazzano-Narrows Bridge.
D. Fort Totten
Fort Totten is a residential neighborhood in Northeast Washington, D.C., known for its proximity to the large Fort Totten Metro station and the historic Civil War-era fort site.
E. Fort Jay
Fort Jay is a historic coastal fortification on Governors Island in New York Harbor, notable for its star-shaped design and long military service from the early 19th century through the Cold War.
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: Fort Trumbull (Third System reconstruction)
Target entity description: Fort Trumbull (Third System reconstruction) is a 19th-century masonry coastal fortification in New London, Connecticut, rebuilt under the U.S. Army’s Third System program to strengthen seacoast defenses.

A. Fort Wadsworth
Fort Wadsworth is a historic former military installation and coastal defense fortification located at the Narrows in New York Harbor, now part of the Gateway National Recreation Area.
B. Fort Hamilton
Fort Hamilton is a 19th-century British coastal artillery fort in Hamilton, Bermuda, built to defend the harbor and now preserved as a historic site and tourist attraction.
C. Fort Hamilton
Fort Hamilton is a historic U.S. Army installation in Brooklyn, New York, guarding the entrance to New York Harbor at the Verrazzano-Narrows Bridge.
D. Fort Totten
Fort Totten is a residential neighborhood in Northeast Washington, D.C., known for its proximity to the large Fort Totten Metro station and the historic Civil War-era fort site.
E. Fort Jay
Fort Jay is a historic coastal fortification on Governors Island in New York Harbor, notable for its star-shaped design and long military service from the early 19th century through the Cold War.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	19th-century fortification ⓘ Third System coastal fortification ⓘ masonry fort ⓘ
builtFor	defense of New London Harbor ⓘ protection of the Thames River approaches ⓘ
constructionMaterial	brick ⓘ stone masonry ⓘ
controlledBy	United States Army ⓘ
country	United States ⓘ linked to: United States of America
currentUse	historic site ⓘ museum ⓘ
designedUnder	U.S. Board of Engineers for Fortifications ⓘ
era	Antebellum period ⓘ
garrisonedBy	Union Army ⓘ
hasArchitecturalStyle	Third System bastioned fort design ⓘ
hasFeature	bastions ⓘ casemates ⓘ moat (dry ditch) ⓘ parade ground ⓘ ravelin ⓘ sally port ⓘ seacoast gun emplacements ⓘ water battery ⓘ
hasFunction	coastal artillery post ⓘ training post ⓘ
hasGunEmplacementsFor	rifled artillery ⓘ smoothbore cannon ⓘ
hasNearbyCity	New London ⓘ linked to: New London, Connecticut
hasShape	five-sided fort ⓘ
heritageDesignation	listed on the National Register of Historic Places ⓘ
locatedIn	New London, Connecticut ⓘ
locatedOnWaterbody	Thames River ⓘ
openToPublic	yes ⓘ
operator	United States Army Corps of Engineers ⓘ linked to: U.S. Army Corps of Engineers
partOf	Fort Trumbull State Park (as preserved structure) ⓘ linked to: Fort Trumbull State Park Third System of U.S. seacoast fortifications ⓘ linked to: Third System of US seacoast defense United States seacoast defense system ⓘ linked to: United States seacoast defense systems
reconstructionOf	Fort Trumbull (Revolutionary War-era fort) ⓘ linked to: Fort Trumbull (Third System reconstruction) Fort Trumbull (Second System fort) ⓘ linked to: Fort Trumbull (Third System reconstruction)
region	New England ⓘ
state	Connecticut ⓘ
strategicRole	guarding approaches to Long Island Sound ⓘ protecting maritime commerce in New London Harbor ⓘ
usedDuringConflict	American Civil War ⓘ
usedFor	artillery emplacement ⓘ coastal defense ⓘ harbor defense ⓘ

How these facts were elicited

Referenced by (3)

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

Third System of US seacoast defense → hasPart → Fort Trumbull (Third System reconstruction) ⓘ

Fort Trumbull (Third System reconstruction) → reconstructionOf → Fort Trumbull (Revolutionary War-era fort) ⓘ

linked to: Fort Trumbull (Third System reconstruction)

Fort Trumbull (Third System reconstruction) → reconstructionOf → Fort Trumbull (Second System fort) ⓘ