Sikorsky S-61
E901828
The Sikorsky S-61 is a twin-engine, medium-lift helicopter widely used for military, search and rescue, and civilian transport roles since its introduction in the late 1950s.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Sikorsky S-61 canonical | 3 |
| Sikorsky S-61 family | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10823161 — 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: Sikorsky S-61 Context triple: [Igor Sikorsky, notableWork, Sikorsky S-61]
-
A.
Sikorsky S-61A-4 Nuri
The Sikorsky S-61A-4 Nuri is a license-built variant of the Sikorsky S-61/Sea King helicopter, used primarily by Malaysia for transport, utility, and search-and-rescue missions.
-
B.
Sikorsky HNS-1
The Sikorsky HNS-1 was an early U.S. Navy version of Igor Sikorsky’s pioneering R-4 helicopter, notable as one of the first operational military helicopters used for rescue and liaison duties during World War II.
-
C.
Sikorsky S-76
The Sikorsky S-76 is a medium-sized, twin-engine commercial helicopter widely used worldwide for executive transport, offshore operations, and search-and-rescue missions.
-
D.
Sikorsky VH-3D Sea King
The Sikorsky VH-3D Sea King is a twin-engine, medium-lift helicopter used by the United States Marine Corps as a presidential transport aircraft.
-
E.
Sikorsky S-58
The Sikorsky S-58 is an American multi-purpose, medium-lift helicopter widely used from the 1950s onward for both civilian and military roles, including transport, search and rescue, and anti-submarine warfare.
- 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: Sikorsky S-61 Target entity description: The Sikorsky S-61 is a twin-engine, medium-lift helicopter widely used for military, search and rescue, and civilian transport roles since its introduction in the late 1950s.
-
A.
Sikorsky S-61A-4 Nuri
The Sikorsky S-61A-4 Nuri is a license-built variant of the Sikorsky S-61/Sea King helicopter, used primarily by Malaysia for transport, utility, and search-and-rescue missions.
-
B.
Sikorsky HNS-1
The Sikorsky HNS-1 was an early U.S. Navy version of Igor Sikorsky’s pioneering R-4 helicopter, notable as one of the first operational military helicopters used for rescue and liaison duties during World War II.
-
C.
Sikorsky S-76
The Sikorsky S-76 is a medium-sized, twin-engine commercial helicopter widely used worldwide for executive transport, offshore operations, and search-and-rescue missions.
-
D.
Sikorsky VH-3D Sea King
The Sikorsky VH-3D Sea King is a twin-engine, medium-lift helicopter used by the United States Marine Corps as a presidential transport aircraft.
-
E.
Sikorsky S-58
The Sikorsky S-58 is an American multi-purpose, medium-lift helicopter widely used from the 1950s onward for both civilian and military roles, including transport, search and rescue, and anti-submarine warfare.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
helicopter
ⓘ
medium-lift helicopter ⓘ twin-engine helicopter ⓘ |
| capability | amphibious operations ⓘ |
| capacity | up to around 30 passengers depending on variant ⓘ |
| category | rotorcraft ⓘ |
| construction | metal airframe ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| crew | 2 ⓘ |
| designPeriod | 1950s ⓘ |
| developedFrom | Sikorsky H-3 Sea King family NERFINISHED ⓘ |
| engineType | turboshaft ⓘ |
| enteredService | early 1960s ⓘ |
| firstFlight | 1959 ⓘ |
| fuselageType | boat-hull fuselage ⓘ |
| introduced | late 1950s ⓘ |
| landingGear | retractable landing gear ⓘ |
| manufacturer | Sikorsky Aircraft NERFINISHED ⓘ |
| marketedAs |
S-61L for land-based civil use
ⓘ
S-61N for offshore and maritime civil use ⓘ |
| notableVariant |
S-61L
NERFINISHED
ⓘ
S-61N NERFINISHED ⓘ Westland Sea King NERFINISHED ⓘ |
| numberOfEngines | 2 ⓘ |
| powerplant | two turboshaft engines ⓘ |
| primaryUsers |
civil operators
ⓘ
military operators ⓘ |
| role |
civilian transport helicopter
ⓘ
military transport helicopter ⓘ search and rescue helicopter ⓘ utility helicopter ⓘ |
| rotorConfiguration | single main rotor ⓘ |
| status | in service ⓘ |
| tailRotor | yes ⓘ |
| usedBy |
air forces
ⓘ
civil helicopter operators ⓘ coast guards ⓘ naval forces ⓘ |
| usedFor |
anti-submarine warfare in some variants
ⓘ
firefighting in some configurations ⓘ maritime operations ⓘ medical evacuation ⓘ offshore support ⓘ passenger transport ⓘ search and rescue missions ⓘ troop transport ⓘ |
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: Sikorsky S-61 Description of subject: The Sikorsky S-61 is a twin-engine, medium-lift helicopter widely used for military, search and rescue, and civilian transport roles since its introduction in the late 1950s.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Sikorsky S-61 family