She'd be beached after being under tow like SS Norway and others have been, sometimes the towing tug is also due to be scrapped from what I've seen in the past. She will never be under her own power again. More like a 5/6 knot beaching. Anyway I wouldn't want to see her cut up and hope that doesn't happen for many, many years or dare I say at all (think HMS Victory for example).
On a sidenote, Canberra didn't get very far up the "beach" due to her draft (despite her approach speed) and was left by her last crew some distance from the shore. This and her solid construction caused major problems for the local company who scrapped her (taking much longer than usual for example) at Gadani in Pakistan.
I think that you'll find that there is only a small % of HMS Victory - probably 30/35% - that is original. It is constantly being worked on and parts replaced.
Many years ago now, I used to live in the same Sgt's Mess as the Royal Marine Sgt Maj of the HMS Victory RM Detachment. There were about 25/30 RN/RM crew onboard at the time and they were the Guides. The RM Sgt was the Chief Guide and responsible to training guides and ensuring standards were maintained.
At the time the Crew used to live in the building that was demolished to build the Mary Rose Exhibition Building, but before that they actually lived onboard HMS Victory.