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How is Costa Concordia being lifted?

16 September 2013 Last updated at 14:06 BST

The effort to right the Costa Concordia off the coast of Tuscany is one of the largest salvage operations ever undertaken.

The project has so far cost more than 600m euros ($800m; £500m) and is likely to cost a lot more by the time the operation is complete.

Karin Giannone explains how the salvage operation is being carried out.

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