Mare Island Naval Shipyard
E45161
Mare Island Naval Shipyard was a major U.S. Navy shipbuilding and repair facility in Vallejo, California, notable as one of the first permanent naval shipyards on the West Coast.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Mare Island Naval Shipyard canonical | 15 |
| Mare Island | 9 |
| Mare Island Navy Yard | 2 |
| Mare Island Historic Park | 1 |
| Mare Island Naval Shipyard (redeveloped site) | 1 |
| Mare Island, California | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T354626 — 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: Mare Island Naval Shipyard Context triple: [USS California (BB-44), builder, Mare Island Naval Shipyard]
-
A.
Naval Base Point Loma
Naval Base Point Loma is a major U.S. Navy installation in San Diego, California, that serves as a key hub for submarine operations and other maritime military activities.
-
B.
Pearl Harbor Naval Shipyard
Pearl Harbor Naval Shipyard is a major U.S. Navy industrial facility in Hawaii that provides maintenance, repair, and modernization services for naval vessels and submarines.
-
C.
Puget Sound Navy Yard
Puget Sound Navy Yard, now known as Puget Sound Naval Shipyard, is a major U.S. Navy shipbuilding and repair facility located in Bremerton, Washington.
-
D.
Naval Station Norfolk
Naval Station Norfolk is the world’s largest naval base and a major hub for the U.S. Navy’s Atlantic Fleet, located in Norfolk, Virginia.
-
E.
San Francisco Maritime National Historical Park
San Francisco Maritime National Historical Park is a waterfront national historical park in San Francisco that preserves and interprets the city’s rich maritime heritage through historic ships, a museum, and educational exhibits.
- 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: Mare Island Naval Shipyard Target entity description: Mare Island Naval Shipyard was a major U.S. Navy shipbuilding and repair facility in Vallejo, California, notable as one of the first permanent naval shipyards on the West Coast.
-
A.
Naval Base Point Loma
Naval Base Point Loma is a major U.S. Navy installation in San Diego, California, that serves as a key hub for submarine operations and other maritime military activities.
-
B.
Pearl Harbor Naval Shipyard
Pearl Harbor Naval Shipyard is a major U.S. Navy industrial facility in Hawaii that provides maintenance, repair, and modernization services for naval vessels and submarines.
-
C.
Puget Sound Navy Yard
Puget Sound Navy Yard, now known as Puget Sound Naval Shipyard, is a major U.S. Navy shipbuilding and repair facility located in Bremerton, Washington.
-
D.
Naval Station Norfolk
Naval Station Norfolk is the world’s largest naval base and a major hub for the U.S. Navy’s Atlantic Fleet, located in Norfolk, Virginia.
-
E.
San Francisco Maritime National Historical Park
San Francisco Maritime National Historical Park is a waterfront national historical park in San Francisco that preserves and interprets the city’s rich maritime heritage through historic ships, a museum, and educational exhibits.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
United States Navy facility
ⓘ
naval shipyard ⓘ |
| closed | 1996 ⓘ |
| commissioned | January 1854 ⓘ |
| constructionStarted | 1854 ⓘ |
| contains |
Mare Island Naval Cemetery
ⓘ
St. Peter's Chapel ⓘ historic dry docks ⓘ naval industrial buildings ⓘ officers' housing ⓘ |
| continent | North America ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentUse |
historic preservation district
ⓘ
industrial and commercial park ⓘ mixed-use redevelopment area ⓘ residential area ⓘ |
| decommissioned | 1996 ⓘ |
| era |
American Civil War
ⓘ
Cold War ⓘ World War I ⓘ World War II ⓘ |
| established | 1854 ⓘ |
| heritageStatus | listed on the National Register of Historic Places ⓘ |
| locatedIn |
San Francisco Bay Area
ⓘ
San Pablo Bay ⓘ Solano County ⓘ
surface form:
Solano County, California
|
| locatedOn |
Mare Island Naval Shipyard
self-linksurface differs
ⓘ
surface form:
Mare Island
|
| location |
Vallejo
ⓘ
surface form:
Vallejo, California
|
| namedAfter |
Mare Island Naval Shipyard
self-linksurface differs
ⓘ
surface form:
Mare Island
|
| near |
Vallejo
ⓘ
surface form:
City of Vallejo
|
| notableActivity |
construction of auxiliary ships
ⓘ
construction of destroyer escorts ⓘ construction of submarines ⓘ |
| notableRole |
important submarine construction yard during the Cold War
ⓘ
major West Coast ship repair facility during World War II ⓘ |
| operator | United States Navy ⓘ |
| ownedBy |
United States government
ⓘ
surface form:
United States federal government
|
| partOf | United States Pacific Fleet infrastructure ⓘ |
| peakEmployment | over 40,000 workers during World War II ⓘ |
| primaryFunction |
overhaul of naval vessels
ⓘ
ship repair ⓘ shipbuilding ⓘ |
| reasonForClosure |
Base Realignment and Closure 2005
ⓘ
surface form:
Base Realignment and Closure (BRAC) process
|
| region | Northern California ⓘ |
| significance |
first United States Navy base established on the Pacific Ocean
ⓘ
one of the first permanent U.S. naval shipyards on the West Coast ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| waterway |
Carquinez Pass
ⓘ
surface form:
Carquinez Strait
Napa River ⓘ |
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: Mare Island Naval Shipyard Description of subject: Mare Island Naval Shipyard was a major U.S. Navy shipbuilding and repair facility in Vallejo, California, notable as one of the first permanent naval shipyards on the West Coast.
Referenced by (29)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Mare Island
this entity surface form:
Mare Island Historic Park
subject surface form:
USS California
this entity surface form:
Mare Island
this entity surface form:
Mare Island
subject surface form:
USS Chicago (CA-29)
subject surface form:
USS Chicago (CA-29)
this entity surface form:
Mare Island, California
this entity surface form:
Mare Island
this entity surface form:
Mare Island Navy Yard
this entity surface form:
Mare Island
this entity surface form:
Mare Island Naval Shipyard (redeveloped site)
this entity surface form:
Mare Island
this entity surface form:
Mare Island
this entity surface form:
Mare Island
this entity surface form:
Mare Island Navy Yard
subject surface form:
State Route 37 (California)
this entity surface form:
Mare Island