Research Identifies Cause of USS San Diego Sinking Using NISE Funds
A two-year investigation led by Dr. Alexis Catsambis concluded that the WWI cruiser USS San Diego sank due to a mine explosion. The findings, presented at the American Geophysical Union meeting, clarify historical speculation and enhance naval historical knowledge.

The USS San Diego (ACR 6) was determined to have sunk due to a mine explosion, as concluded by researchers from the Naval Surface Warfare Center, Carderock Division (NSWC Carderock) using NISE 219 funds. This conclusion came after extensive analysis, including historical research, 3D modeling, and underwater imaging.
The research, which started in 2017 to commemorate the ship's centenary, aimed to reassess the initial theories surrounding its sinking. The study eliminated possibilities of sabotage, accident, and torpedo attacks, enhancing understanding of naval disaster assessments.
This project provides valuable lessons for future U.S. Navy operations and archaeologic endeavors.




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