The cruise ship that capsized off Italy's coast will take up to 10 months to remove, officials have said, as rough seas off the Tuscan coast forced the suspension of recovery operations.
Officials called off both the start of operations to remove 500,000 gallons of fuel and the search for people still missing after determining the Costa Concordia had moved four centimetres over six hours, coupled with waves of more than one metre.
A 17th body, identified as Peruvian crew member Erika Soria Molina, was found on Saturday. Sixteen crew and passengers remain listed as missing, with one body recovered from the ship not yet identified.
Officials have virtually ruled out finding anyone alive more than two weeks after the Costa Concordia hit a reef, but were reluctant to give a final death toll for the January 13 disaster.
The crash happened when the captain deviated from his planned route, creating a huge gash that capsized the ship. More than 4,200 people were on board.
"Our first goal was to find people alive," Franco Gabrielli, the national civil protection official in charge of the operation, told a daily briefing. "Now we have a single, big goal, and that is that this does not translate into an environmental disaster."
University of Florence professor Riccardo Fanti said the ship's movements could either be caused by the ship settling on its own weight, slipping deeper into the seabed, or both. He also could not rule out the ship's sliding along the seabed.
Experts have said it would take 28 days to remove fuel from 15 tanks accounting for more than 80% of all fuel on board the ship. The next job would be to target the engine room, which contains nearly 350 cubic metres of diesel, fuel and other lubricants, Mr Gabrielli said.
Only once the fuel is removed can work begin on removing the ship, either floating it in one piece or cutting it up and towing it away as a wreck. Costa has begun the process for taking bids for the recovery operation, a process that will take two months.
Mr Gabrielli said the actual removal will take from seven to 10 months - meaning that the wreck will be visible from the coast of the island of Giglio for the entire summer tourism season.