Two and a half years ago,  the cruise ship Costa Concordia ran aground, sank and capsized with the loss of 32 passengers and crew, off the island of Giglio in the Tyrrhenian Sea off Tuscany.  This morning, the ship was re-floated  as salvors pumped compressed air into 30 large steel tanks welded to both side of the stricken ship.   In roughly a week, the cruise ship will be towed to Genoa to be scrapped.   The salvage of the Costa Concordia, which has cost $1 billion dollars, is one the largest salvage operations ever performed. 

Operation begins to refloat Costa Concordia cruise liner