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E-006719LANDMARK CASE · HIGH CORROBORATIONDATE PRECISION: rangeRECORD COMPLETENESS: 100%

Will Jansen Kerkrade Low-Altitude Discs

Night of August 6-7, 1952Kerkrade, Limburg, Netherlands

Marine engineer Will Jansen reported one disc-shaped object with visible superstructure swooping low, hovering and zigzagging, followed by a second similar disc that later tilted vertically and departed upward.

// LINKED CLASSIFICATIONS:Disc / Saucer(C-000253)→Scientific & Observational Types(P-000101)→Official Investigations & Programs(P-000105)→
Claims are displayed with the source wording, locator, relationship and verification state. Competing claims remain separate rather than being averaged into a single answer.
SOURCE COMPARISON

Encounter · Reported Encounter Observation

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CLAIM-695052reported
“Marine engineer Will Jansen reported one disc-shaped object with visible superstructure swooping low, hovering and zigzagging, followed by a second similar disc that later tilted vertically and departed upward.”
The UFO Evidence
SRC-002107 · Will Jansen Kerkrade Low-Altitude Discs narrative; uploaded PDF pp. 238-238
SUPPORTS
SOURCE COMPARISON

Will Jansen Kerkrade Disc Objects (1952) · Hall Section X Foreign Reports Claim

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CLAIM-695053reported
“Hall cites a letter to CSI of Los Angeles. The episode is a single-witness visual report.”
The UFO Evidence
SRC-002107 · Will Jansen Kerkrade Disc Objects (1952) source description; uploaded PDF pp. 238-238
SUPPORTS
SOURCE COMPARISON

Hall Foreign Reports Dossier · Hall Section X Foreign Reports Claim

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CLAIM-695001reported
“Hall introduces Section X as a survey intended to show that UFO reports, official investigations and private study groups were international rather than uniquely American.”
The UFO Evidence
SRC-002107 · Section X introduction and survey framing; uploaded PDF pp. 226-226
SUPPORTS
SOURCE COMPARISON

Hall Europe Foreign Reports Dossier · Hall Section X Foreign Reports Claim

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CLAIM-695007reported
“Hall says the Swedish defense ministry reported that about 80 percent of roughly 1,000 ghost-rocket reports were attributed to celestial phenomena while some radar detections remained outside those categories.”
The UFO Evidence
SRC-002107 · Swedish ghost-rocket investigation summary; uploaded PDF pp. 234-235
SUPPORTS
CLAIM-695008reported
“Hall reports that the British Air Ministry investigated UFO reports but refused to release details of specific radar and aviation cases, citing defense responsibilities.”
The UFO Evidence
SRC-002107 · British Air Ministry correspondence; uploaded PDF pp. 236-236
SUPPORTS
CLAIM-695009reported
“Hall reports a 1963 West German Embassy reply saying there was no official West German UFO policy or agency, while the attaché considered the subject insufficiently explored.”
The UFO Evidence
SRC-002107 · West German Embassy reply and Damm survey; uploaded PDF pp. 239-240
SUPPORTS
Multiple claim rows are intentionally retained when sources disagree. ANOMALY does not silently reconcile competing values.