HMS Campbeltown (I42) conversion for St Nazaire Raid
E713594
HMS Campbeltown (I42) conversion for the St Nazaire Raid was a heavily modified British destroyer turned into an explosive-laden assault vessel used in 1942 to cripple the German-occupied dry dock at St Nazaire.
All labels observed (1)
| Label | Occurrences |
|---|---|
| HMS Campbeltown (I42) conversion for St Nazaire Raid canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8121031 — 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: HMS Campbeltown (I42) conversion for St Nazaire Raid Context triple: [Cammell Laird, built, HMS Campbeltown (I42) conversion for St Nazaire Raid]
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A.
British heavy cruiser HMS Norfolk
HMS Norfolk was a British County-class heavy cruiser of the Royal Navy that saw notable action during World War II, including operations against the German battleship Bismarck.
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B.
HMS Belfast
HMS Belfast is a preserved Royal Navy light cruiser turned museum ship moored on the River Thames in London.
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C.
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.
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D.
Dunkirk pocket
The Dunkirk pocket was a World War II encirclement of Allied forces in northern France that led to their mass evacuation across the English Channel in 1940.
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E.
HMS Onslaught
HMS Onslaught was a British Royal Navy destroyer that served during World War II, notably taking part in Arctic convoy operations against German forces.
- 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: HMS Campbeltown (I42) conversion for St Nazaire Raid Target entity description: HMS Campbeltown (I42) conversion for the St Nazaire Raid was a heavily modified British destroyer turned into an explosive-laden assault vessel used in 1942 to cripple the German-occupied dry dock at St Nazaire.
-
A.
British heavy cruiser HMS Norfolk
HMS Norfolk was a British County-class heavy cruiser of the Royal Navy that saw notable action during World War II, including operations against the German battleship Bismarck.
-
B.
HMS Belfast
HMS Belfast is a preserved Royal Navy light cruiser turned museum ship moored on the River Thames in London.
-
C.
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.
-
D.
Dunkirk pocket
The Dunkirk pocket was a World War II encirclement of Allied forces in northern France that led to their mass evacuation across the English Channel in 1940.
-
E.
HMS Onslaught
HMS Onslaught was a British Royal Navy destroyer that served during World War II, notably taking part in Arctic convoy operations against German forces.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
military operation component
ⓘ
naval engineering modification ⓘ special operations vessel conversion ⓘ |
| appliedToVessel |
HMS Campbeltown (I42)
ⓘ
linked to:
HMS Campbeltown
|
| armamentModification |
main torpedo tubes removed
ⓘ
some guns removed or repositioned for close-support role ⓘ |
| associatedForce | British Commandos ⓘ |
| associatedUnit |
Combined Operations Headquarters
ⓘ
linked to:
Combined Operations Command
|
| camouflage |
altered profile to imitate German Möwe-class destroyer
ⓘ
painted in Kriegsmarine-style markings ⓘ |
| conflict |
Battle of the Atlantic
ⓘ
Second World War ⓘ
linked to:
World War II
|
| country | United Kingdom ⓘ |
| designFeature |
additional armor plating around bridge and vital areas
ⓘ
bow packed with delayed-action explosives ⓘ explosives concealed in concrete-filled compartments ⓘ funnels altered to resemble German destroyer silhouette ⓘ internal spaces cleared to accommodate explosives and assault troops ⓘ superstructure cut down ⓘ |
| explosiveMass | approximately 4.5 long tons of explosives ⓘ |
| explosiveType | Amatol charges ⓘ |
| fuseDelay | set for several hours after impact ⓘ |
| fuseType | delayed-action fuses ⓘ |
| location | United Kingdom ⓘ |
| notableAspect |
designed as a one-way mission with loss of ship assumed
ⓘ
one of the most extensive single-ship conversions for a commando raid in WWII ⓘ |
| operator | Royal Navy ⓘ |
| originalNavyOfShip | United States Navy ⓘ |
| originalShipName | USS Buchanan (DD-131) ⓘ |
| partOf | Operation Chariot ⓘ |
| planningAuthority |
Admiralty
ⓘ
linked to:
The Admiralty
Combined Operations under Lord Louis Mountbatten ⓘ |
| purpose |
to cripple the only Atlantic coast dock capable of servicing battleship Tirpitz
ⓘ
to deny the use of the St Nazaire dry dock to German capital ships ⓘ to destroy the Normandie dry dock caisson ⓘ |
| relatedShipClass | Town-class destroyer ⓘ |
| result |
Normandie dock gate destroyed
ⓘ
St Nazaire dry dock rendered unusable for the rest of the war ⓘ significant damage to port facilities at St Nazaire ⓘ
linked to:
Raid on St Nazaire
|
| riskLevel | high-risk special operation ⓘ |
| roleInRaid |
ramming vessel for dock gate
ⓘ
transport for commando assault teams ⓘ |
| strategicEffect |
contributed to containment of battleship Tirpitz
ⓘ
removed Atlantic repair option for German battleships ⓘ |
| targetCountry | German-occupied France ⓘ |
| targetedFacility | Normandie dry dock ⓘ |
| targetedPort |
St Nazaire
ⓘ
linked to:
Saint-Nazaire
|
| usedIn |
St Nazaire Raid
ⓘ
linked to:
Raid on St Nazaire
|
| year | 1942 ⓘ |
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: HMS Campbeltown (I42) conversion for St Nazaire Raid Description of subject: HMS Campbeltown (I42) conversion for the St Nazaire Raid was a heavily modified British destroyer turned into an explosive-laden assault vessel used in 1942 to cripple the German-occupied dry dock at St Nazaire.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.