Good luck with parbuckling. That graphic shows how it works but shows it on a flat bottom. Given that the hull
is laying just about on its side on a rock slope, putting cables
under will be difficult. Normally cables
are put under using water jets to tunnel through mud or sand, but this is rock. And getting airbags under her is going to be a real pain, again because shes almost flat on the slope. Pulling on the off side will also tend to help her slip. Consider also the aerial view of the ship and shore. In order to parbuckle they will need to build a solid base for the winches to sit on which means a fairly large engineering job in itself.
One more thing to consider is the light weight construction of the ship. Someone mentioned WWII Pearl Harbor salvage
in an earlier post. Consider that they were salvaging warships with heavy plate and armor. Tying in the lift
points to the structure won't be easy because of its light construction. You can see how badly the port side is crushing just from the weight of the ship. And as I mentioned earlier, closing off all those monster windows and balcony doors is going to be even more fun. There is no room to work outside the ship, so putting patches on from outside is out for a goodly amount of side. They may try to pour concrete into the cabins, but that will add weight in the worst possible place.
I am looking forward to seeing how this job gets done. I would not be surprised if she is carted off in chunks on site. Giglio will make a fortune housing and entertaining the crews used to chop her to pieces. Sometimes they just can't be refloated.