How do you pull a 900 foot ship off the rocks?

Ever since the Italian cruise ship Costa Concordia ran aground off Giglio, her gleaming white hull lying precariously sideways on the rocky seabed has sparked the question, can she can be saved?  While it’s unlikely this vessel will ever be placed back in service by Carnival, we do expect it to be removed from the rocks.

Via our friends at gCaptain.