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(CNN) – South Korean officials continue to call their operation a search and rescue mission, but hopes are fading that survivors of the sunken ferry Sewol may yet be found.
Rescue officials said Wednesday that divers have yet to find an air pocket on the third or fourth decks, where most of the passenger bedrooms and the ship's cafeteria are located.
Rescuers haven't found a single survivor since 174 people were rescued the day the ship sank one week ago.