Fears wrecked cruise ship could slip underwater

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View of the wrecked cruise liner Costa Concordia on January 16, 2012, in the harbour of the Tuscan island of Giglio after it ran aground after hitting underwater rocks on January 13. Pier Luigi Foschi, head of the Costa Crociere line, said the company had commissioned several firms to look at the best way to salvage the 114,500-tonne vessel lying on its side. The 290-metre (950-feet) long Costa Crociere, which is 17 decks high, has a large gash in its hull from running on to rocks before it capsized on Friday night. Coastguards said the half-submerged giant ship had now stabilised as weather conditions off the Tuscan coast improved but added that there was still a risk the hulk could slip off a rocky shelf into the open sea and sink entirely. AFP PHOTO / ANDREAS SOLARO (Photo credit should read ANDREAS SOLARO/AFP/Getty Images)
ANDREAS SOLARO

Divers had to be pulled out of the water and the search operation suspended when the grounded Costa Concordia shifted a few inches early Wednesday morning. The fear is that the massive vessel - almost 1,000 feet long - might slip off the rock ledge it's resting on and plunge into deep water.

The ships' every movement is being registered by sensors, but the urgency has gone out of the search operation. No one expects to find anyone else alive aboard the largest cruise liner ever to have been wrecked. The official death toll stands at 11, but there are still 22 listed as missing.

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Video: How will the Costa Concordia be salvaged?

Meanwhile, after a three hour court appearance the Costa Concordia's captain, Francesco Schettino, was placed under house arrest Tuesday pending multiple charges of manslaughter and abandoning his ship.

Recordings of the conversation between the coast guard and the liner's captain give a chilling insight into what was going on.

Click on the player above to see Allen Pizzey's full report from Isola del Giglio