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Description
Russian submarine B-871 Alrosa is an diesel-electric Kilo class (Project 877B) submarine that joined the Soviet Fleet in 1990 and is active with the Russian Black Sea Fleet as of 2011. Instead of a conventional propeller Alrosa uses a pump jet propulsion system.

Description
Russian submarine B-871 Alrosa is an diesel-electric Kilo class (Project 877B) submarine that joined the Soviet Fleet in 1990 and is active with the Russian Black Sea Fleet as of 2011. Instead of a conventional propeller Alrosa uses a pump jet propulsion system.