You wouldnt get the sling under.you have to lift from the lift points preferably with a carriage. Plus a lot / some of those boxes are using self locking Ibcs so that presents a problem for the cranes you can get assembled out there after the dirt work and assorted prep work gets done.it seems flat so that's good.most likley the high tide coming in will help it float free but I dont really care if its stuck there till it rusts into oblivion.

I'm not the expert and who knows how evenly these containers are all loaded.