From the article:
inspections showed the vessel had deteriorated and corroded during its 15 months underwater.
No....you deserve to have a nice, modern sub in perfect condition :-)
I wonder if anybody suspected that THAT might have happened.
I was going to hope that somebody could get this relic to a real submarine museum, or get it on display to show how the Soviet war machine really worked (or didn't work!) during the cold war - but after 15 months underwater ????
It would be cheaper to buy a fresh one.