"Please continue to search for my child. Don't stop.
"Bring her home to me as soon as you can," Albertini said.
Albertini's lawyer asked for information about where Arlotti was last seen on board to allow divers to narrow their search.
Diving experts also warned that the salvage operation, which was being stepped up in Giglio Port yesterday, might impede their activities.
Danilo Del Carro, marshal of the coast guard divers' division, who helped to retrieve five bodies on Wednesday, said: "Depending on the weather, I think we've got two more days.
"The salvage firm is getting stuff in place already. But when the floating equipment is out there it will get in the way of what we do."
However, Filippo Marini, the chief of the Italian coast guard, said: "The absolute priority is finding the people aboard the vessel.
"The salvage work can proceed if it allows the rescue work to continue in absolute security for the divers."
- Independent