UAP AnalysisIndependent · the declassified record
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OtherUnresolvedAmbiguous

Radar-tracked and visually observed object at ~1000 mph — Gulf of Mexico, November 1957

~Nov 1957Gulf of Mexico, south of Louisiana (aboard USCGC Sebago) (approx.)1620s
⟳ Deeper read pending. This record is from the FBI 62-HQ-83894 flying-disc file, whose cursive, clippings and faint scans are under-read by automated OCR. It is flagged for a vision-transcription pass and likely undercounts what the source contains — see the documents collection note.
Analysis — our summary

In November 1957, the USCGC Sebago tracked an unidentified object on ship radar in the Gulf of Mexico south of Louisiana. The object first appeared at 5:10 AM and was tracked for approximately 27 minutes. It initially traveled at an estimated 1,000 mph, then hovered, then moved northward before disappearing at approximately 5:37 AM. Four crew members independently had visual observation of the object. No official explanation was recorded.

As reported — verbatim from the document
“Object tracked on radar for 27 minutes south of Louisiana, appeared at 5:10 AM, traveled at approximately 1,000 mph, hovered, then moved northward and disappeared at 5:37 AM; 4 crew members had visual observation.”
Analyst notes — caveats & confidence

Dual-sensor (radar and visual) confirmation by multiple military crew members is a significant factor. Speed of ~1,000 mph exceeds any known 1957 aircraft capability in a non-military context and is at the edge of then-contemporary jet technology. Location is theater-level centroid for southern Gulf of Mexico. Confidence moderate due to second-hand FBI summary source.

Provenance
Source document65_HS1-101634279_100-DE-26505.pdf
Document typeincident report
Reporting agencyOther
Source pages15
Redaction markers in doc1
DeclassifiedFirst public at this release (2026)
Held classified~69 years (≥, to this release)
Extraction confidence ModerateHow cleanly this record could be parsed from the source — driven by legibility & redaction. It is not a measure of how credible or anomalous the sighting is.