German U-boat U-47
E357698
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| German U-boat U-47 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3438689 — 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 U-boat U-47 Context triple: [Scapa Flow, attackedBy, German U-boat U-47]
-
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.
U-9
U-9 was a German World War I U-boat famed for its early and dramatic successes in submarine warfare, including the sinking of three British cruisers in a single engagement in 1914.
-
C.
German tanker Altmark
The German tanker Altmark was a World War II-era naval auxiliary ship of Nazi Germany, best known for its role in the 1940 Altmark Incident involving the rescue of British prisoners in Norwegian waters.
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D.
German battleship Bismarck
The German battleship Bismarck was a powerful World War II Kriegsmarine warship famed for sinking HMS Hood and later being hunted down and destroyed by the Royal Navy in the Atlantic.
-
E.
U-505 submarine
The U-505 submarine is a captured German World War II U-boat preserved as a historic naval artifact and war prize.
- 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 U-boat U-47 Target entity description: 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.
-
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.
U-9
U-9 was a German World War I U-boat famed for its early and dramatic successes in submarine warfare, including the sinking of three British cruisers in a single engagement in 1914.
-
C.
German tanker Altmark
The German tanker Altmark was a World War II-era naval auxiliary ship of Nazi Germany, best known for its role in the 1940 Altmark Incident involving the rescue of British prisoners in Norwegian waters.
-
D.
German battleship Bismarck
The German battleship Bismarck was a powerful World War II Kriegsmarine warship famed for sinking HMS Hood and later being hunted down and destroyed by the Royal Navy in the Atlantic.
-
E.
U-505 submarine
The U-505 submarine is a captured German World War II U-boat preserved as a historic naval artifact and war prize.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
German Type VIIB submarine
ⓘ
Kriegsmarine warship ⓘ World War II submarine ⓘ |
| achievement | penetrated British naval base at Scapa Flow ⓘ |
| armament |
1 × 8.8 cm SK C/35 naval gun
ⓘ
14 torpedoes (typical load) ⓘ 5 × 53.3 cm torpedo tubes ⓘ anti-aircraft guns ⓘ |
| awardedToCrew |
Iron Cross decorations
ⓘ
linked to:
Iron Cross
|
| beam | 6.20 metres ⓘ |
| builder | Germaniawerft ⓘ |
| causeOfLoss | unknown (various theories) ⓘ |
| class | Type VIIB submarine ⓘ |
| commander | Günther Prien ⓘ |
| commissioned | 17 December 1938 ⓘ |
| conflict | World War II ⓘ |
| country | Nazi Germany ⓘ |
| crewComplement | about 44 to 48 men ⓘ |
| dateOfLoss | 7 March 1941 ⓘ |
| dateOfScapaFlowRaid | 13–14 October 1939 ⓘ |
| dateSankHMSRoyalOak | 14 October 1939 ⓘ |
| displacementSubmerged | 857 tonnes ⓘ |
| displacementSurfaced | 753 tonnes ⓘ |
| draught | 4.74 metres ⓘ |
| fate | missing in action ⓘ |
| flotilla | 7th U-boat Flotilla ⓘ |
| homePort |
Kiel
ⓘ
St. Nazaire ⓘ
linked to:
Saint-Nazaire
|
| laidDown | 25 February 1937 ⓘ |
| launched | 29 October 1938 ⓘ |
| lengthOverall | 66.50 metres ⓘ |
| notableCommander | Günther Prien ⓘ |
| notableEngagement | Scapa Flow raid ⓘ |
| numberOfPatrols | 10 war patrols ⓘ |
| operator | Kriegsmarine ⓘ |
| patrolArea |
North Atlantic
ⓘ
linked to:
Atlantic Ocean
North Sea ⓘ Western Approaches ⓘ |
| placeOfLoss |
North Atlantic Ocean
ⓘ
linked to:
Atlantic Ocean
|
| propulsion | diesel-electric ⓘ |
| rangeSurfaced | around 8,700 nautical miles at 10 knots ⓘ |
| sank | HMS Royal Oak ⓘ |
| serviceBranch |
Kriegsmarine U-boat arm
ⓘ
linked to:
Kriegsmarine
|
| shipsSunk | over 30 merchant ships ⓘ |
| shipyard |
Germaniawerft, Kiel
ⓘ
linked to:
Germaniawerft
|
| status | lost with all hands ⓘ |
| submergedSpeed | about 8 knots ⓘ |
| surfaceSpeed | about 17.9 knots ⓘ |
| symbol | snorting bull emblem ⓘ |
| testDepth | 230 metres ⓘ |
| tonnageSunkHMSRoyalOak | about 29,150 tons ⓘ |
| totalTonnageSunk | over 190,000 gross register tons ⓘ |
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 U-boat U-47 Description of subject: 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.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.