The Soviet Navy's principal striking force since the late 1930s has been its large submarine fleet. Submarines will likewise remain the navy's "basic" force in carrying numerous and diverse missions against the targets ashore and enemy naval forces.
"The Role of the Attack Submarines in Soviet Naval Theory,"
Naval War College Review: Vol. 36
, Article 6.
Available at: https://digital-commons.usnwc.edu/nwc-review/vol36/iss6/6