Iowa-class battleship
E93382
The Iowa-class battleship is a class of fast, heavily armed U.S. Navy battleships built during World War II, renowned for their large 16-inch guns, thick armor, and long service lives extending into the late 20th century.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Iowa-class battleship canonical | 9 |
| Iowa class | 6 |
| Iowa-class | 1 |
| Iowa-class battleship group | 1 |
| Iowa-class battleships | 1 |
| Iowa-class battleships group of the U.S. Navy | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T777174 — 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: Iowa-class battleship Context triple: [Battleship Missouri Memorial, shipClass, Iowa-class battleship]
-
A.
New York-class battleship
The New York-class battleship was a class of early 20th-century U.S. Navy dreadnoughts that introduced 14-inch guns and served prominently through both World Wars.
-
B.
Nevada-class battleship
The Nevada-class battleship was a pair of early 20th-century U.S. Navy dreadnoughts that introduced major design innovations such as the "all-or-nothing" armor scheme and oil-fired propulsion.
-
C.
Pennsylvania-class battleship
The Pennsylvania-class battleship was a pair of powerful U.S. Navy dreadnoughts built during World War I that later served prominently in World War II, including at Pearl Harbor and in major Pacific campaigns.
-
D.
USS Iowa
USS Iowa was the lead ship of the Iowa-class fast battleships of the United States Navy, renowned for its World War II service and later Cold War deployments.
-
E.
USS Missouri
USS Missouri is a United States Navy Iowa-class battleship best known as the site of Japan’s formal surrender in World War II, marking the end of the conflict.
- 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: Iowa-class battleship Target entity description: The Iowa-class battleship is a class of fast, heavily armed U.S. Navy battleships built during World War II, renowned for their large 16-inch guns, thick armor, and long service lives extending into the late 20th century.
-
A.
New York-class battleship
The New York-class battleship was a class of early 20th-century U.S. Navy dreadnoughts that introduced 14-inch guns and served prominently through both World Wars.
-
B.
Nevada-class battleship
The Nevada-class battleship was a pair of early 20th-century U.S. Navy dreadnoughts that introduced major design innovations such as the "all-or-nothing" armor scheme and oil-fired propulsion.
-
C.
Pennsylvania-class battleship
The Pennsylvania-class battleship was a pair of powerful U.S. Navy dreadnoughts built during World War I that later served prominently in World War II, including at Pearl Harbor and in major Pacific campaigns.
-
D.
USS Iowa
USS Iowa was the lead ship of the Iowa-class fast battleships of the United States Navy, renowned for its World War II service and later Cold War deployments.
-
E.
USS Missouri
USS Missouri is a United States Navy Iowa-class battleship best known as the site of Japan’s formal surrender in World War II, marking the end of the conflict.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
United States Navy ship class
ⓘ
battleship class ⓘ |
| armorBeltThickness | up to 12.1 inches ⓘ |
| commissioned | 1943 ⓘ |
| conflict |
Cold War
ⓘ
Gulf War ⓘ Korean War ⓘ Vietnam War ⓘ World War II ⓘ |
| countryOfOrigin | United States of America ⓘ |
| deckArmorThickness | up to 6 inches ⓘ |
| decommissioned | 1992 ⓘ |
| designedAs | fast battleship ⓘ |
| designedFor | Pacific Theater operations ⓘ |
| displacement |
about 45,000 long tons standard
ⓘ
over 57,000 long tons full load ⓘ |
| event | site of Japanese Instrument of Surrender in World War II ⓘ |
| hasPart |
USS Illinois (BB-65)
ⓘ
USS Iowa ⓘ
surface form:
USS Iowa (BB-61)
USS Illinois (BB-65) ⓘ
surface form:
USS Kentucky (BB-66)
USS Missouri ⓘ
surface form:
USS Missouri (BB-63)
USS New Jersey ⓘ
surface form:
USS New Jersey (BB-62)
USS Wisconsin ⓘ
surface form:
USS Wisconsin (BB-64)
|
| hullMaterial | steel ⓘ |
| laidDown | 1940 ⓘ |
| mainBatteryConfiguration | three triple turrets ⓘ |
| maximumSpeed | 33 knots ⓘ |
| modernizationIncluded |
Harpoon anti-ship missiles
ⓘ
Phalanx CIWS (modernization era) ⓘ
surface form:
Phalanx CIWS
Tomahawk cruise missile ⓘ
surface form:
Tomahawk cruise missiles
|
| modernized | 1980s ⓘ |
| namedAfter | U.S. states ⓘ |
| notableShip |
USS Missouri
ⓘ
surface form:
USS Missouri (BB-63)
|
| numberBuilt | 4 ⓘ |
| numberOfMainGuns | 9 ⓘ |
| numberPlanned | 6 ⓘ |
| operator | United States Navy ⓘ |
| precededBy | South Dakota-class battleship ⓘ |
| primaryArmament | 16-inch/50 caliber Mark 7 gun ⓘ |
| propulsion |
oil-fired boilers
ⓘ
steam turbines ⓘ |
| role |
carrier task force escort
ⓘ
fleet flagship ⓘ shore bombardment ⓘ |
| secondaryArmament | 5-inch/38 caliber dual-purpose gun ⓘ |
| servicePeriod | 1943–1992 ⓘ |
| status | all completed ships preserved as museum ships ⓘ |
| succeededBy | Montana-class battleship ⓘ |
| turretFaceArmorThickness | up to 19 inches ⓘ |
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: Iowa-class battleship Description of subject: The Iowa-class battleship is a class of fast, heavily armed U.S. Navy battleships built during World War II, renowned for their large 16-inch guns, thick armor, and long service lives extending into the late 20th century.
Referenced by (19)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
USS Missouri
this entity surface form:
Iowa-class
this entity surface form:
Iowa class
this entity surface form:
Iowa-class battleship group
subject surface form:
USS Alabama (BB-60)
this entity surface form:
Iowa class
subject surface form:
USS Iowa
this entity surface form:
Iowa class
this entity surface form:
Iowa-class battleships group of the U.S. Navy
this entity surface form:
Iowa class
this entity surface form:
Iowa-class battleships