ALFA** (705) class SSN

 0 ALFA-class NUCLEAR-PROPELLED ATTACK SUBMARINES (SSN)
   PODVODNAYA LODKA ATOMNAYA (PLA)

The ALFA was one of the world's fastest and deepest-diving combat submarines while in service. The submarine incorporated a number of innovations, including a high power-to-weight reactor plant using a liquid metal as the heat exchange medium, a titanium hull, extensive automation and advanced drag-reduction features.

The Alfa was the world's first submarine to have a titanium...