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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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German Type 212 Sub Has This ‘Propeller Boss Vortex Diffuser’ To Reduce Its Acoustic Signature

Posted on February 1, 2019 by Naval Open Source Intelligence (NOSI)

– War Zone – Not much is known about the system, but it’s based on similar principals as finned systems commercial ships use to increase efficiency.

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