Crowley Maritime, parent of Titan Salvage, says the vessel is moving at a speed of two knots as part of a convoy of 10 other vessels. Titan is working with Italy’s Micoperi on the effort.

“The project is the largest and one of the most technically complex maritime salvage jobs ever completed,” Jacksonville, Florida-based Crowley said.

The stricken 3,780-berth Costa Concordia (built 2006) has been visible off Giglio Island since it grounded and capsized in January 2012, killing 32 people.