Rescuers managed to take at least 281 out of 292 passengers and crew to safety after the blaze broke out on the Italian-flagged Euroferry Olympia early on Friday.
They discovered a survivor on the stern of the still burning vessel earlier on Sunday but 11 people were still missing, according to the coast guard and ferry operator.
Greek television footage showed the man climbing down a stepladder from the vessel onto a tugboat tied to it.
Firefighters have been trying for days to contain the fire and cool scorching temperatures on the 183-metre ship, which has been towed closer to the shore.
Footage showed plumes of smoke pouring out of the Euroferry Olympia as firefighters from a nearby vessel sprayed water onto the burning ferry in the Ionian Sea.
A total of 241 passengers and 51 crew were on board when the blaze broke out early on Friday and rescue vessels moved most of the 280 people who were rescued to the nearby island of Corfu.
The ferry caught fire en route from Igoumenitsa, a port in Western Greece, to the Italian port of Brindisi, a nine-hour journey.
Aerial footage released by the Greek coastguard on Friday showed rows of burnt trucks on the blackened deck after flames engulfed the ship, owned by Grimaldi Lines.
The ferry was carrying 153 vehicles, the company said.
As firefighters tried to cool scorching temperatures on the ship before emergency crews boarded it to resume search operations, the blazing ferry was towed closer to the shore for better protection against adverse weather, Greek coastguard and fire brigade officials said.
Late on Friday, Greek crews rescued two people, a Bulgarian and an Afghan citizen, who was not on the official list of missing people.
Bulgaria’s Foreign Ministry said 127 Bulgarians were on board.
Consular staff from the passengers’ home countries were in Corfu to help coordinate their safe return with the ferry company, a witness said.
A prosecutor has ordered an inquiry into the incident, the Greek coastguard said, adding that the captain and both first mates of the ship had been briefly detained to testify and were later released.
Authorities will have more evidence about the cause of the fire once the ship is tugged to a safe place, Shipping Minister Giannis Plakiotakis told Skai television.
- AAP
