1952-09-13•1950s•North Sea / Skagerrak (NATO exercise area, Denmark/UK)•International

Operation Mainbrace UFO Sightings

MILITARYMASSRADAR
CREDIBILITY
8/10
WITNESSES
CLASSIFIED
SHAPE
disc
COORDINATES
56.0000, 9.0000

INCIDENT REPORT

DECLASSIFIED DOCUMENTS (2)

Air Force

Project Blue Book - Operation Mainbrace Files

report • 1952-10-00
↗Other

UK MoD DEFE 24 UFO Files - 1952 Sightings

report • 1952-09-00
↗

TOP ARTICLES (2)

Operation Mainbrace

Wikipedia•2024-02-10

The 1952 Topcliffe UFO Sighting

BBC News•2011-10-26

VIDEO EVIDENCE (1)

Declassified Navy UFO Cases: From 1952 Mainbrace to the Pebble Beach Underwater Dome Incident
▶
PT20M

Declassified Navy UFO Cases: From 1952 Mainbrace to the Pebble Beach Underwater Dome Incident

UFO Documentary

natooperation-mainbracenorth-seadenmarkunited-kingdomraf-topcliffeuss-rooseveltnavy-witnesspilot-witnessradar-witnessmass-witnessproject-blue-book1952cold-war
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