Martin JRM Mars flying boat
E769850
The Martin JRM Mars flying boat is a large World War II–era American long-range transport seaplane, later famous for its postwar use as a massive water-bombing firefighting aircraft.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Martin JRM Mars flying boat canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8966325 — 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: Martin JRM Mars flying boat Context triple: [Glenn L. Martin Company, product, Martin JRM Mars flying boat]
-
A.
Bristol Jupiter
The Bristol Jupiter was a widely used British air-cooled radial aircraft engine of the 1920s and 1930s that powered numerous military and civilian aircraft worldwide.
-
B.
Supermarine Walrus
The Supermarine Walrus is a British World War II-era amphibious biplane reconnaissance and air-sea rescue aircraft designed by Supermarine.
-
C.
Bristol Centaurus V
The Bristol Centaurus V was a powerful British air-cooled radial aircraft engine used in late-World War II and postwar high-performance fighters and other military aircraft.
-
D.
Bristol Type 142
The Bristol Type 142 was a British twin-engine high-speed civil transport prototype of the 1930s whose advanced design directly led to the development of the Bristol Blenheim light bomber.
-
E.
Fairey Gordon
The Fairey Gordon was a British biplane light bomber and general-purpose military aircraft used by the Royal Air Force and several other air arms during the interwar period and early World War II.
- 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: Martin JRM Mars flying boat Target entity description: The Martin JRM Mars flying boat is a large World War II–era American long-range transport seaplane, later famous for its postwar use as a massive water-bombing firefighting aircraft.
-
A.
Bristol Jupiter
The Bristol Jupiter was a widely used British air-cooled radial aircraft engine of the 1920s and 1930s that powered numerous military and civilian aircraft worldwide.
-
B.
Supermarine Walrus
The Supermarine Walrus is a British World War II-era amphibious biplane reconnaissance and air-sea rescue aircraft designed by Supermarine.
-
C.
Bristol Centaurus V
The Bristol Centaurus V was a powerful British air-cooled radial aircraft engine used in late-World War II and postwar high-performance fighters and other military aircraft.
-
D.
Bristol Type 142
The Bristol Type 142 was a British twin-engine high-speed civil transport prototype of the 1930s whose advanced design directly led to the development of the Bristol Blenheim light bomber.
-
E.
Fairey Gordon
The Fairey Gordon was a British biplane light bomber and general-purpose military aircraft used by the Royal Air Force and several other air arms during the interwar period and early World War II.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
flying boat
ⓘ
transport aircraft ⓘ |
| airframeMaterial | metal ⓘ |
| configuration | high-wing ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| crew | 4 ⓘ |
| cruiseSpeed | about 190 mph ⓘ |
| designedAs | long-range ocean patrol bomber ⓘ |
| engineType | piston radial engine ⓘ |
| era | World War II ⓘ |
| firstFlight | 1942 ⓘ |
| height | about 15.9 m ⓘ |
| hullType | boat hull ⓘ |
| introduced | 1943 ⓘ |
| landingGear | water-landing only ⓘ |
| laterAdaptedAs |
aerial firefighting aircraft
ⓘ
transport aircraft ⓘ |
| length | about 36.6 m ⓘ |
| manufacturer | Glenn L. Martin Company ⓘ |
| maximumSpeed | about 221 mph ⓘ |
| maximumTakeoffWeight |
about 165,000 kg
ⓘ
about 400,000 lb ⓘ |
| notableFor | being one of the largest flying boats ever built ⓘ |
| notableVariant |
JRM-1
ⓘ
JRM-2 ⓘ |
| numberBuilt | 7 ⓘ |
| operator |
Forest Industries Flying Tankers
ⓘ
United States Navy ⓘ |
| powerplant | 4 × Wright R-3350 Duplex-Cyclone radial engines ⓘ |
| primaryUser | United States Navy ⓘ |
| propulsion | propeller-driven ⓘ |
| range | over 5,000 km ⓘ |
| retiredFromUSNService | 1956 ⓘ |
| role |
long-range transport seaplane
ⓘ
water bomber ⓘ |
| serviceCeiling | about 4,900 m ⓘ |
| successorInRole | land-based strategic airlifters ⓘ |
| tailConfiguration | conventional tail ⓘ |
| usedFor |
Pacific theater logistics
ⓘ
aerial firefighting ⓘ cargo transport ⓘ troop transport ⓘ |
| usedInConflict | World War II ⓘ |
| waterCapacity |
about 7,200 US gallons
ⓘ
over 27,000 liters ⓘ |
| wingspan | about 61.0 m ⓘ |
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: Martin JRM Mars flying boat Description of subject: The Martin JRM Mars flying boat is a large World War II–era American long-range transport seaplane, later famous for its postwar use as a massive water-bombing firefighting aircraft.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.