Here's how engineers salvaged Italy's massive shipwreck

Yesterday, engineers successfully led one of the largest salvage operations in history on the shipwrecked Costa Concordia, which smashed into a small Italian island twenty months ago. Workers were able to right the ship in roughly 19 hours. This graphic shows how they did it, and how they'll float it away.

Don Foley created this infographic for Scientific American — click here to see it full size.