‘Unprecedented’ operation to refloat stricken Costa Concordia to cost £200 million

Its captain, Francesco Schettino, is under house arrest and has been accused of sailing the ship too close to Giglio, smashing it into a rocky reef and tearing a huge gash in its hull which led to it capsizing.

He faces charges of manslaughter and of deserting the ship well before the evacuation had been completed, climbing into a lifeboat which took him to shore.

The next court hearing in the case is set for July.

The scale of the challenge was “gigantic”, said Silvio Bartolotti, the manager of Micoperi, an Italian marine contractor that will collaborate with Titan.

The two companies’ plan for removing the wreck involves extracting the huge chunk of rock embedded in its side and patching up the torn hull.

Engineers and divers will then construct an underwater platform beneath the ship.

They will also fix steel compartments or ‘caissons’ to the side of the ship that is out of the water.

Two cranes will slowly pull the ship upright so that it rests on the submerged platform.

The caissons will be filled with water to help the cranes lift the massive weight of the ship.

Once the vessel is upright, more chambers will be attached to the other side of the hull.

All the caissons will then be emptied of water and filled with air, which will stabilise the ship in preparation for it being towed to a nearby port for demolition.

The port has not yet been chosen but the most likely candidates are Genoa or Savona on the Ligurian coast or Livorno in Tuscany.

Capt Habib conceded that the operation entailed significant risks and said that if it went wrong there was no “plan B”.

“There are two critical stages – to roll the vessel onto the platform and then to safely refloat it. We think our plan is going to work and that we will be successful.” Titan has extensive experience of salvaging stricken container ships around the world, including the recovery of a beached container ship loaded with 5,000 vehicles in the North Pacific and an oil rig that was adrift off Tristan da Cunha in the South Atlantic, the most remote inhabited island in the world.

Costa Cruises, the Italian owners of the cruise liner, said the “monumental” salvage operation, “the likes of which have never been attempted anywhere in the world,” would cost at least $300 million.

“We are now launching a salvage operation with characteristics and technical complexities that have never been faced before,” said Gianni Onorato, the president of the company.

Once the ship is removed the sea bed will be returned to its former pristine state, with seaweed and other marine flora replanted, the firm said.

Mr Onorato pinned the blame for the disaster squarely on Capt Schettino, who is under house arrest at his home near Naples.

He said the ship’s scheduled route meant it should have been five nautical miles from Giglio, rather than sailing within a few hundred feet of the island’s treacherous shore.

It has been alleged that the captain was distracted by the presence of a young Moldovan cabaret dancer on the night of the collision.

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