Cruise liner Costa Concordia is surrounded by tugboats during a refloat operation at Giglio harbour at Giglio Island

Cruise liner Costa Concordia is surrounded by tugboats during a refloat operation at Giglio harbour at Giglio Island

Cruise liner Costa Concordia is surrounded by tugboats during a refloat operation at Giglio harbour at Giglio Island July 14, 2014. Technicians on Monday began a complex operation to refloat and tow away the wreck of the Costa Concordia, two and a half years after the luxury liner capsized off the Italian coast, killing 32 people. REUTERS/Alessandro Bianchi (ITALY – Tags: DISASTER TRANSPORT MARITIME)