Echo-class submarine Ships Echo II class — significant dates

| _ | Shipyard | Laid_down | Launched | Commissioned | Fleet | Status_ |
|---|---|---|---|---|---|---|
| K-166 | SEVMASH, Severodvinsk | May 30, 1961 | September 6, 1962 | October 31, 1963 | Northern | Decommissioned 1989 for scrapping |
| K-104 | SEVMASH, Severodvinsk | January 11, 1962 | June 16, 1963 | December 15, 1963 | Northern | Decommissioned 1990 for scrapping |
| K-170 K-86, KS-86 | SEVMASH, Severodvinsk | May 16, 1962 | August 4, 1963 | December 26, 1963 | Northern | Decommissioned 1991 for scrapping |
| K-175 | Leninskiy Komsomol Shipyard, Komsomolsk-na-Amure | March 17, 1962 | September 30, 1962 | December 30, 1963 | Pacific | Decommissioned 1990 for scrapping |
| K-184 | Leninskiy Komsomol Shipyard, Komsomolsk-na-Amure | February 2, 1963 | August 25, 1963 | March 31, 1964 | Pacific | Decommissioned 1990 for scrapping |