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In the 50s and early 60s soviet navy expended most of its funds and efforts on building a huge fleet of diesel electric subs
80+ whiskey
50+ foxtrot
20 * zulu
30 + romeo
they were mostly noisy , slow and armed only with torpedoes.
WI soviet navy instead focused only on small attack surface craft ( earlier versions of tarantul and nanuchka classes ) with cruise missiles early on and missile armed shore based bombers ( more and earlier than OTL )
Limit the role of submarines to SSBN until SSGN and SSN arrive in numbers by late 60s early 70s