| Record | OBS-0531 |
|---|---|
| Category | Unsorted/Other |
| Status | UNPROVEN |
| Summary | The sinking of the RMS Lusitania in 1915 involved a single torpedo strike followed by a mysterious second explosion. Various theories propose causes such as aluminum powder, ammunition, boiler explosion, coal dust, pipe bomb, or steam line rupture. The exact cause remains debated due to the wreck's position. |
| Origin | Immediately after the sinking in 1915, with ongoing debate through the 20th century, including expeditions by Robert Ballard in 1995. |
| Claimed |
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| Evidence / consensus | No single theory has been proven. The wreck lies on its side, preventing direct inspection of the torpedo impact area. Experts agree the second explosion was likely due to some cargo or coal dust, but the exact cause remains unknown. |
Sources are external and provided for verification. Listing does not imply the Observer endorses their claims.