Project 877 Kilo class
Project 636 Kilo class
Diesel-Electric Torpedo Submarine

B-871 Alrosa w/ pumpjet

Russian submarine B-871 Alrosa is an diesel-electric Kilo-class 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.