These Russian or Soviet submarines either suffered extensive crew casualties or were entirely lost to enemy action or to "storm or perils of the sea."
A dagger (†) indicates that the boat was lost.
According to the U.S. Navy, "The former Soviet Union secretly disposed of about 16 submarines by sinking them in the northern oceans.
"[1] See also the list of Russian or Soviet submarines.
The Komsomolets Nuclear Submarine Memorial Society aids the dependents of sailors lost in these disasters.