Italy cruise ship Costa Concordia: Search for missing
It sank on the first night of a Mediterranean cruise on Friday. Most of its 4,000 passengers and crew reached land by lifeboats but some swam ashore.
Three people died. Late on Saturday, two people were found alive on board.
Rescuers have reached a man and a woman stranded in a cabin two decks down on the half-submerged ship, according to Italian media reports.
The precise number of those who remain unaccounted for is unclear. Late on Saturday local official Giuseppe Linardi said up to 41 people were missing.
Earlier he had put the figure at 70, adding that some might still be housed in private homes on Giglio - where the survivors first reached land.
But he added that there still might be some "in the belly of the ship".
AnalysisInvestigators will now look into every aspect of this accident, but one of the key elements they will examine will be the electrical systems.
Modern ships tend to use electrical generators to drive the engines, so a power cut can leave the captain unable to steer away from danger.
Human error could also be a factor, and there will also be concern at the speed which the ship listed on to its side. Not only would that have been frightening, it seems to have affected the crew's ability to launch some of the lifeboats.
All ships have to meet safety standards set out by the International Maritime Organisation. Crews are trained to deal with emergencies, and cruise companies stress this kind of accident is rare.
Those who died include two French passengers and a Peruvian crewman.
Some passengers were rescued by lifeboat, helicopters plucked to safety some who were trapped on the ship, and others jumped from the ship into the cold sea.
About 40 people are being treated in hospital.
The captain was being held for questioning, Italian TV reported. Prosecutors were not immediately available for comment.
Passenger Luciano Castro told Ansa news agency: "We heard a loud noise while we were at dinner as if the keel of the ship hit something."
"The ship started taking in water through the hole and began tilting."
Fulvio Rocci SurvivorThere was panic, like in a film, dishes crashing to the floor, people running, people falling down the stairs”
"It was so unorganised, our evacuation drill was scheduled for 17:00 (16:00 GMT)," Melissa Goduti, 28, from the US told AP. "We had joked what if something had happened today."
Passenger Mara Parmegiani told Italian media there were "scenes of panic".
"We were very scared and freezing because it happened while we were at dinner so everyone was in evening wear.
"We definitely didn't have time to get anything else. They gave us blankets but there weren't enough," she said.
Several passengers compared the accident to the film Titanic, about the sinking of the giant ocean liner in April 1912 which claimed more than 1,500 lives.
"I can easily understand the comparisons to the film, how it must have been on the Titanic, or in a fiction film," passenger Francesca Sinatra said.
Hypothermia The Costa Concordia, which is operated by Costa Cruises, had sailed from Civitavecchia near Rome on Friday on a regular weekly Mediterranean cruise when it ran aground.
- Entered service in 2006
- Built by Fincantieri in Italy at a cost of 450m euros (£372m; $570m)
- Capacity for 3,780 passengers
- 1,500 cabins, five restaurants and 13 bars
- Four swimming pools
- A 6,000 sq m (64,600 sq ft) spa with gym, sauna, Turkish bath and solarium
- Sports pitch, cinema, theatre, casino and disco
Mr Onorato added: "We will be working in full transparency with Italian authorities" to understand the causes of the disaster.
He said normal lifeboat evacuation had become "almost impossible" because the ship had listed so quickly.
Rescued passengers were initially accommodated in hotels, schools and a church on Giglio.
They have now been moved to the mainland, Elizabeth Nanni from the island's tourist information service told the BBC.
"Usually there are 700 people on the island at this time of year, so receiving 4,000 and some in the middle of the night wasn't easy," she said. "Some people jumped in the sea so they had hypothermia."
Some "tens" of British passengers are believed to have been on board, said the UK Foreign Office, which has sent a team to the area.
Send your pictures and videos to firstname.lastname@example.org or text them to 61124 (UK) or +44 7624 800 100 (International). If you have a large file you can upload here.