Modern Engineering Marvels on MSN
Inside the enduring legacy of Russia’s “Black Hole” submarines
By introducing its first Kilo-class sub in 1980, the Soviet Union was entering a new phase of diesel-electric submarine ...
Key Points and Summary - Russia’s Kilo-class diesel-electric submarines—especially the modernized Project 636.3/636.6 variants—remain central to Moscow’s naval posture because they are quiet, proven, ...
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