German submarine U-557
E920807
German submarine U-557 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine that operated during World War II, conducting Atlantic patrols and engaging Allied naval vessels.
All labels observed (1)
| Label | Occurrences |
|---|---|
| German submarine U-557 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11353726 — 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: German submarine U-557 Context triple: [HMS Galatea (71), attacker, German submarine U-557]
-
A.
German submarine U-616
German submarine U-616 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine that operated in the Mediterranean during World War II, engaging Allied naval forces before being sunk in 1944.
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B.
German submarine U-75
German submarine U-75 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine that operated during World War II, conducting Atlantic patrols and commerce raiding before being sunk in 1941.
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C.
German submarine U-96
German submarine U-96 was a Type VIIC U-boat of Nazi Germany’s Kriegsmarine in World War II, best known as the real-life inspiration for the novel and film "Das Boot."
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D.
German U-boat U-47
German U-boat U-47 was a World War II German submarine commanded by Günther Prien, best known for its daring and highly successful 1939 raid into the British naval base at Scapa Flow.
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E.
German U-boat U-20
German U-boat U-20 was an Imperial German Navy submarine from World War I, best known for torpedoing the British ocean liner RMS Lusitania in 1915, an event that significantly influenced public opinion against Germany.
- 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: German submarine U-557 Target entity description: German submarine U-557 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine that operated during World War II, conducting Atlantic patrols and engaging Allied naval vessels.
-
A.
German submarine U-616
German submarine U-616 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine that operated in the Mediterranean during World War II, engaging Allied naval forces before being sunk in 1944.
-
B.
German submarine U-75
German submarine U-75 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine that operated during World War II, conducting Atlantic patrols and commerce raiding before being sunk in 1941.
-
C.
German submarine U-96
German submarine U-96 was a Type VIIC U-boat of Nazi Germany’s Kriegsmarine in World War II, best known as the real-life inspiration for the novel and film "Das Boot."
-
D.
German U-boat U-47
German U-boat U-47 was a World War II German submarine commanded by Günther Prien, best known for its daring and highly successful 1939 raid into the British naval base at Scapa Flow.
-
E.
German U-boat U-20
German U-boat U-20 was an Imperial German Navy submarine from World War I, best known for torpedoing the British ocean liner RMS Lusitania in 1915, an event that significantly influenced public opinion against Germany.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
German Type VIIC submarine
ⓘ
U-boat ⓘ military vessel ⓘ |
| armament |
1 × 2 cm anti-aircraft gun
ⓘ
1 × 8.8 cm SK C/35 naval gun ⓘ 14 torpedoes ⓘ 5 × 53.3 cm torpedo tubes ⓘ |
| attacked | Allied naval vessels ⓘ |
| beam | 6.20 m ⓘ |
| builder | Blohm & Voss NERFINISHED ⓘ |
| builtAt | Hamburg NERFINISHED ⓘ |
| causeOfSinking | rammed by Italian torpedo boat Orione ⓘ |
| commander | Ottokar Paulshen NERFINISHED ⓘ |
| commissionedOn | 1941-02-13 ⓘ |
| conflict | World War II ⓘ |
| countryOfOrigin | Nazi Germany ⓘ |
| crewComplement | 44–60 ⓘ |
| dateOfSinking | 1941-12-16 ⓘ |
| displacementSubmerged | 871 t ⓘ |
| displacementSurfaced | 769 t ⓘ |
| draught | 4.74 m ⓘ |
| fate | sunk ⓘ |
| launchedOn | 1940-09-05 ⓘ |
| length | 67.10 m ⓘ |
| lostWithAllHands | true ⓘ |
| navalEnsign | Kriegsmarine war ensign NERFINISHED ⓘ |
| numberOfPropellers | 2 ⓘ |
| numberOfShafts | 2 ⓘ |
| operatedBy | Kriegsmarine NERFINISHED ⓘ |
| participatedIn | Battle of the Atlantic NERFINISHED ⓘ |
| patrolArea |
Mediterranean Sea
NERFINISHED
ⓘ
North Atlantic Ocean NERFINISHED ⓘ |
| placeOfSinking | Mediterranean Sea NERFINISHED ⓘ |
| powerplant |
2 AEG GU 460/8–27 electric motors
ⓘ
2 Germaniawerft F46 diesel engines ⓘ |
| precededByClass | Type VIIB ⓘ |
| propellerDiameter | 1.23 m ⓘ |
| propulsion | diesel-electric ⓘ |
| rangeSubmerged | 80 nmi at 4 knots ⓘ |
| rangeSurfaced | 8500 nmi at 10 knots ⓘ |
| serviceEndYear | 1941 ⓘ |
| serviceEntryYear | 1941 ⓘ |
| submarineClass | Type VIIC ⓘ |
| submergedSpeed | 7.6 knots ⓘ |
| sunkShips | several Allied merchant ships ⓘ |
| surfaceSpeed | 17.7 knots ⓘ |
| testDepth | 230 m ⓘ |
| victimOfFriendlyFire | true ⓘ |
| yardNumber | 533 ⓘ |
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: German submarine U-557 Description of subject: German submarine U-557 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine that operated during World War II, conducting Atlantic patrols and engaging Allied naval vessels.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.