| Record | OBS-0741 |
|---|---|
| Category | Unexplained/Maritime Mysteries |
| Status | UNPROVEN |
| Summary | The USS Proteus and USS Nereus, sister ships of the USS Cyclops, also vanished without a trace in the same region under similar circumstances. Their disappearances are often cited as evidence of a paranormal or anomalous zone in the Bermuda Triangle. |
| Origin | The USS Proteus disappeared in November 1941, and the USS Nereus in December 1941, both in the North Atlantic. |
| Claimed |
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| Evidence / consensus | The exact causes remain unknown. The Navy has not provided definitive explanations, but conventional explanations such as storms or structural failures are considered plausible. |
Sources are external and provided for verification. Listing does not imply the Observer endorses their claims.