Fenian Ram submarine
E650358
The Fenian Ram submarine was an early experimental submersible designed in the 1880s by Irish engineer John Philip Holland for the Fenian Brotherhood, pioneering modern submarine warfare technology.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fenian Ram submarine canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7193843 — 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: Fenian Ram submarine Context triple: [John Philip Holland, notableWork, Fenian Ram submarine]
-
A.
Holland VI submarine
The Holland VI submarine was the pioneering early 20th-century U.S. Navy submarine that became the first commissioned modern submarine, designed by Irish engineer John Philip Holland.
-
B.
Submarine Vesikko
Submarine Vesikko is a restored Finnish World War II submarine now preserved as a museum ship at the Suomenlinna sea fortress in Helsinki.
-
C.
Sottomarina
Sottomarina is a coastal district and popular seaside resort area of the Venetian town of Chioggia in northeastern Italy.
-
D.
HMS Somali
HMS Somali was a Royal Navy destroyer that saw extensive service during the early years of World War II, including Arctic convoy escort duties, before being lost in 1942.
-
E.
SS Maheno
SS Maheno was an early 20th-century ocean liner that later became a famous shipwreck landmark on Fraser Island, Australia.
- 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: Fenian Ram submarine Target entity description: The Fenian Ram submarine was an early experimental submersible designed in the 1880s by Irish engineer John Philip Holland for the Fenian Brotherhood, pioneering modern submarine warfare technology.
-
A.
Holland VI submarine
The Holland VI submarine was the pioneering early 20th-century U.S. Navy submarine that became the first commissioned modern submarine, designed by Irish engineer John Philip Holland.
-
B.
Submarine Vesikko
Submarine Vesikko is a restored Finnish World War II submarine now preserved as a museum ship at the Suomenlinna sea fortress in Helsinki.
-
C.
Sottomarina
Sottomarina is a coastal district and popular seaside resort area of the Venetian town of Chioggia in northeastern Italy.
-
D.
HMS Somali
HMS Somali was a Royal Navy destroyer that saw extensive service during the early years of World War II, including Arctic convoy escort duties, before being lost in 1942.
-
E.
SS Maheno
SS Maheno was an early 20th-century ocean liner that later became a famous shipwreck landmark on Fraser Island, Australia.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
experimental submarine
ⓘ
military prototype vehicle ⓘ submarine ⓘ |
| armament |
dynamite gun
ⓘ
pneumatic gun ⓘ |
| armamentConfiguration | bow-mounted gun firing through muzzle in bow ⓘ |
| associatedWith |
Fenian Brotherhood
NERFINISHED
ⓘ
Irish republican movement NERFINISHED ⓘ |
| builder | Delamater Iron Works NERFINISHED ⓘ |
| category |
19th-century submarines
ⓘ
prototype submarines ⓘ |
| conflictIntended | war against the United Kingdom ⓘ |
| constructionSite | New York City NERFINISHED ⓘ |
| controlSystem |
horizontal rudders for depth control
ⓘ
vertical rudder for steering ⓘ |
| countryOfDesign | United States NERFINISHED ⓘ |
| crewSize | 3 ⓘ |
| decadeOfConstruction | 1880s ⓘ |
| designer | John Philip Holland NERFINISHED ⓘ |
| displacement | approximately 19 tons submerged ⓘ |
| engineerOfDesign | John Philip Holland NERFINISHED ⓘ |
| feature |
ballast tanks for submergence
ⓘ
cigar-shaped hull ⓘ compressed air system ⓘ conning tower ⓘ |
| fundedBy | Fenian Brotherhood NERFINISHED ⓘ |
| heritageDesignation | historic submarine ⓘ |
| hullType | single-hull ⓘ |
| inception | 1881 ⓘ |
| influenced | Holland VI submarine NERFINISHED ⓘ |
| influencedBy | earlier Holland submarine experiments ⓘ |
| length |
about 31 feet
ⓘ
about 9.4 metres ⓘ |
| locatedIn | Paterson, New Jersey NERFINISHED ⓘ |
| location | Paterson Museum NERFINISHED ⓘ |
| material | steel ⓘ |
| notableFor |
early use of internal combustion engine in a submarine
ⓘ
influence on later Holland-class submarines ⓘ pioneering modern submarine design principles ⓘ |
| operatorIntended | Fenian Brotherhood NERFINISHED ⓘ |
| powerSource | petroleum fuel ⓘ |
| projectOutcome | program cancelled after dispute between Holland and Fenian Brotherhood ⓘ |
| propulsion |
internal combustion engine
ⓘ
single-cylinder Brayton petroleum engine ⓘ |
| purpose | attack British shipping ⓘ |
| serviceEntry | never entered active naval service ⓘ |
| status | preserved museum ship ⓘ |
| testEnvironment |
New York Harbor
NERFINISHED
ⓘ
Passaic River NERFINISHED ⓘ |
| use |
experimental weapon
ⓘ
submarine warfare technology development ⓘ |
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: Fenian Ram submarine Description of subject: The Fenian Ram submarine was an early experimental submersible designed in the 1880s by Irish engineer John Philip Holland for the Fenian Brotherhood, pioneering modern submarine warfare technology.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.