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NOSI – Naval Open Source Intelligence™

Operational naval news, curated from open source intelligence, intended to serve as a source of continuing naval education. By Michael P. D'Alessandro M.D.

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How the Soviet Union Snooped Waters for Enemy Subs—Without Sonar

Posted on January 31, 2019 by Naval Open Source Intelligence (NOSI)

– Popular Mechanics – Newly declassified documents show that even the most secretive submarines leave a trail.

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