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Russian submarine B-871 - Wikipedia
Russian Navy's oldest submarine Alrosa to re-enter service
Russian Navy Kilo submarine Alrosa prepares to start post-refit
Kilo-class submarine - Wikipedia
Russian Black Sea Fleet oldest sub B871 Alrosa to start sea trials …
Russian submarine B-871 - Wikiwand
Russian pumpjet-equipped submarine to return to sea - Janes
B-871 Alrosa - rusnavy.com
Oldest Russian Black Sea Fleet Submarine Back to the Sea after 8 …
Kilo Class - Project 636 - GlobalSecurity.org