How many Soviet submarine classes were there, and why were there so many?
Short answerAn early-1990 reference lists about 41 classes across a fleet of roughly 310 submarines, reflecting many parallel missions and generations.
NotesNorman Polmar's Naval Institute Guide to the Soviet Navy lists roughly 41 classes and 310 submarines in an early-1990 snapshot. The breakdown spans SSBN, SSGN, SSN and diesel boats rather than one homogeneous undersea force. The exercise makes the scale of Soviet parallel development visible and points readers to a useful reference source.