ASDIC sonar
E236965
ASDIC sonar was an early underwater detection system used primarily by Allied naval forces to locate and track submarines using sound waves.
All labels observed (2)
| Label | Occurrences |
|---|---|
| ASDIC sonar canonical | 5 |
| ASDIC | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2144741 — 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: ASDIC sonar Context triple: [Allied convoy system, usesTechnology, ASDIC sonar]
-
A.
Thomson Marconi Sonar
Thomson Marconi Sonar was a major European defense electronics company specializing in advanced sonar and underwater warfare systems for naval applications.
-
B.
SAMPSON radar
The SAMPSON radar is an advanced multi-function, rotating active electronically scanned array (AESA) radar system used by the Royal Navy for long-range air and surface surveillance and fire control.
-
C.
APY-10 multi-mission surface search radar
The APY-10 multi-mission surface search radar is an advanced maritime surveillance and targeting radar system used on platforms like the Boeing P-8 Poseidon for detecting, tracking, and classifying surface and subsurface contacts in all weather conditions.
-
D.
FNRS-1 bathyscaphe
The FNRS-1 bathyscaphe was an early deep-diving research submersible designed by Swiss physicist and explorer Auguste Piccard to pioneer manned exploration of the ocean depths.
-
E.
ALTAIR radar
ALTAIR radar is a powerful tracking and surveillance radar system located on Kwajalein Atoll, used primarily for space object tracking and missile defense research.
- 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: ASDIC sonar Target entity description: ASDIC sonar was an early underwater detection system used primarily by Allied naval forces to locate and track submarines using sound waves.
-
A.
Thomson Marconi Sonar
Thomson Marconi Sonar was a major European defense electronics company specializing in advanced sonar and underwater warfare systems for naval applications.
-
B.
SAMPSON radar
The SAMPSON radar is an advanced multi-function, rotating active electronically scanned array (AESA) radar system used by the Royal Navy for long-range air and surface surveillance and fire control.
-
C.
APY-10 multi-mission surface search radar
The APY-10 multi-mission surface search radar is an advanced maritime surveillance and targeting radar system used on platforms like the Boeing P-8 Poseidon for detecting, tracking, and classifying surface and subsurface contacts in all weather conditions.
-
D.
FNRS-1 bathyscaphe
The FNRS-1 bathyscaphe was an early deep-diving research submersible designed by Swiss physicist and explorer Auguste Piccard to pioneer manned exploration of the ocean depths.
-
E.
ALTAIR radar
ALTAIR radar is a powerful tracking and surveillance radar system located on Kwajalein Atoll, used primarily for space object tracking and missile defense research.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
active sonar system
ⓘ
anti-submarine warfare technology ⓘ underwater detection system ⓘ |
| alsoKnownAs |
ASDIC
ⓘ
linked to:
ASDIC sonar
Allied Submarine Detection Investigation Committee sonar ⓘ |
| component |
display unit
ⓘ
receiver ⓘ transducer dome ⓘ transmitter ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| detectionMethod | active echo-ranging ⓘ |
| developedBy |
British Admiralty
ⓘ
linked to:
Admiralty (United Kingdom)
United Kingdom ⓘ |
| developedInPeriod |
1910s
ⓘ
1920s ⓘ |
| era | early 20th century ⓘ |
| frequencyBand | ultrasonic frequencies ⓘ |
| influenced | post-war sonar development ⓘ |
| medium | seawater ⓘ |
| militaryBranch | naval forces ⓘ |
| mountedOn |
corvettes
ⓘ
destroyers ⓘ escort vessels ⓘ frigates ⓘ surface warships ⓘ |
| operatedBy | sonar operator ⓘ |
| operatingPrinciple |
emission of sound pulses in water
ⓘ
measurement of echoes from underwater targets ⓘ |
| outputType |
bearing to target
ⓘ
range to target ⓘ |
| primaryPurpose |
submarine detection
ⓘ
submarine tracking ⓘ |
| relatedTo |
anti-submarine warfare
ⓘ
convoy escort tactics ⓘ depth charges ⓘ sonar ⓘ |
| successor | modern sonar systems ⓘ |
| target |
submarines
ⓘ
underwater obstacles ⓘ |
| usedAgainst |
Axis submarines
ⓘ
German U-boats ⓘ
linked to:
U-boats
|
| usedBy |
Allied naval forces
ⓘ
linked to:
Allied navies
Royal Navy ⓘ |
| usedDuring |
World War I
ⓘ
World War II ⓘ |
| usedFor |
anti-submarine patrols
ⓘ
convoy protection ⓘ hunter-killer group operations ⓘ |
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: ASDIC sonar Description of subject: ASDIC sonar was an early underwater detection system used primarily by Allied naval forces to locate and track submarines using sound waves.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: ASDIC sonar