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11. Russian Sierra II Class Submarine

Manufacturer: Lazurit, Krasnoye Surmovo Principal Applicant: Russian Navy Cost: not disclosed (the Russians withheld the date). The Sierra-class submarine project was known as Project 945A Kondor and Project 945 Barrakuda in the USSR. The reporting name used by NATO was Sierra. An attack submarine class with nuclear propulsion is called the Sierra class. The final member of the Sierra class was finished in 1992 after it was developed in 1979 and put into service in 1984.

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Russia's Sierra II Class Submarine ©DoDMedia/WWikimedia.org Currently, the Russian Navy uses this class. Only four of the five that were intended have been finished. Since two are presently undergoing modernization, two are operational at the moment. The titanium pressure hull of the Sierra class gives it its unique appearance. The submarines in this class can dive deeper, emit less noise, and are more resistant to torpedo attacks because of their lightweight, sturdy hulls.