If you compare these pics Russian Federation Submarine Rescue Ship KommunaI reckon that she must be kin to the "Bushman's Axe" by now, with every part having been replaced several times over the years.
Far be it for me to recommend Wikipedia as a source, but if they have even half the facts correct she's a remarkable story.
Russian rescue ship Kommuna - Wikipedia
en.wikipedia.org
(Please don't ban me!)
oldsig
With the one you posted the row of scuttles near the waterline has disappeared.
It looks like the inwater hull been reconstructed and fully welded from just above the waterline. This makes sense to me because every one of those thousands of original rivets would have been totally knackered.