Divers blast rescue hole in Italian cruise ship Underwater wreckage of the Costa Concordia NEW: 28 people from seven countries are missing, Italian authorities say Coast Guards ordered the captain to return to the ship, a newspaper reports Divers are in the process of retrieving the second data recorder The head of the company that owns the ship holds out hope of finding survivors Giglio, Italy (CNN) -- Divers trying to locate survivors of the Costa Concordia cruise ship accident used explosives to blow a hole in the hull of the vessel to allow access for search-and-rescue teams, Italian Navy officials said Tuesday. A total of 28 people remain missing following the wreck, which led to six deaths, Italian officials said Tuesday. The list includes 14 Germans, six Italians, including a crew member, four French people, two Americans, and one each from Hungary, India and Peru, all of whom are crew members. One person on that list was found dead Monday, but authorities have not specified which one it is. The German Foreign Ministry said earlier Tuesday that 12 Germans were unaccounted for. The announcement came on the same day that Italy's Coast Guard said it has located a second "black box," or data recorder, from the ship that wrecked off Italy's western coast Friday evening. Operations were under way to retrieve the recorder, said Coast Guard Warrant Petty Officer Massimo Macaroni. Information from the device, along with that from another that has already been recovered and is being analyzed by prosecutors, will provide authorities with "a complete picture of how the disaster unfolded," Macaroni said. Meanwhile, an Italian newspaper printed excerpts of a conversation between the captain and coast guards on shore during the incident. Capt. Francesco Schettino gave contradictory answers about whether he had abandoned the ship, prompting authorities on shore to instruct him to return to it. Commander, this is an order. Now I am in charge. You have abandoned ship," the unnamed coast guard says, telling him to go back to the vessel and coordinate rescue efforts. Prosecutor Francesco Verusio confirmed that the partial conversation printed in Corriere della Serra matched a transcript prosecutors had. Authorities questioned Schettino at a closed hearing Tuesday, his attorney said. Questions abound for captain of doomed cruise ship He is under arrest and may face charges that include manslaughter, shipwreck, and abandoning a ship when passengers were still on board, Verusio said. Schettino could face up to 15 years in prison, the prosecutor said. The captain's attorney, Bruno Leporatti, said in a statement Monday that Schettino was "shattered, dismayed, saddened for the loss of lives and strongly disturbed." But, he said, Schettino is "nonetheless comforted by the fact that he maintained during those moments the necessary lucidity to put in place a difficult emergency maneuver ... bringing the ship to shallow waters." That move, Leporatti said, saved the lives of many passengers and crew members. Italian prosecutors have ruled out a technical error as the cause of the incident, saying the captain was on the bridge at the time and had made a "grave error." Overheard on CNN.com: Worst-case scenario strikes The Costa Concordia hit rocks Friday night just off Italy's western coast, leading to what passengers described as a chaotic and surreal scene as they rushed to evacuate. Early Tuesday, rescue efforts continued in and around the mammoth vessel, which was listing on its side off the island of Giglio. Divers have been searching the skyscraper-sized ship, working underwater in pitch blackness, in hopes of finding the missing. There were roughly 4,200 people on the Costa Concordia when it ran aground -- about 3,200 passengers and 1,000 crew members. The head of the company that owns the ship said Monday he has not given up hope of finding survivors. "Hope is the last thing to die," said Costa cruises chairman and chief executive Pier Luigi Foschi. Prosecutors are considering whether others may share responsibility for the crash with the captain. Foschi placed blame for the wreck squarely on the captain, however, saying Schettino had deviated from frequently traveled routes. "The captain decided to change the route and he went into water that he did not know in advance," Foschi said. The ship had about 2,300 tons of fuel on board at the time of the wreck, Foschi said, adding that so far there was "absolutely no evidence of fuel leaking into the sea." Foschi said passengers would get "material compensation for their loss," but declined to go into details. One person who was scheduled to board the Concordia Saturday said he was offered a refund, but will not get the refund for three months. Survivors described the panic that ensued after the ship's collision with the rocks. "Debris was flying ... pandemonium just started," said Georgia Ananias, who was in a dining room. It was horrible, and people were slipping and falling. Others described a tumultuous ordeal trying to board life boats, in part because the tilt of the ship made boarding some boats difficult. "When we finally got on the life boat, it took several minutes to get everybody on," Valerie Ananias said. People were screaming and crying. CNN's Livia Borghese, Hada Messia, Jim Boulden, Dan Rivers and Richard Allen Greene contributed to this report.