Concordia Captain Francesco Schettino denies that he was going too fast. The captain told a friend he was pressured by managers to steer toward the island He told court officials he was helping with lifeboats and realized he was off the ship But in a taped conversation, he tells the friend he left after the ship began listing 16 people are dead and 16 others missing after the ship hit rocks and partially sank Giglio, Italy (CNN) -- In his answers to prosecutors, defense attorneys and a judge, the captain of the ill-fated cruise ship Costa Concordia admitted he made a "mistake" in colliding with rocks off the Italian island of Giglio. However, in statements made during a phone conversation with a friend earlier this month, Capt. Francesco Schettino said he was pressured by managers to steer the ship to the area where the collision occurred, two Italian newspapers reported Wednesday. Both Costa Cruises and authorities have criticized Schettino's behavior. He is under house arrest and faces possible charges of manslaughter, shipwreck and abandoning ship in the January 13 incident, when the vessel struck rocks and rolled over onto its side in the waters off the island. A 16th body was found on the ship Tuesday. Sixteen others are still missing from the roughly 4,200 people aboard the cruise liner -- 3,200 passengers and 1,000 crew members -- at the time of the collision. "I hit this projection of rock, that seems almost stuck into the ship, but this was my mistake," Schettino said in the 126-page transcript. ..." There isn't anything I can say, as I was convinced that passing withing .28 of a mile there wouldn't be any problem. The captain also brushed aside suggestions that at 15 knots, he was going too fast, as alleged by prosecutors. "There isn't a speed limit," he said. ..." We had more or less the speed needed to reach Savona on time. Schettino maintained in the transcript that he ran the ship aground in order to keep it from sinking. "This is what allowed me to limit the tilting," he said. Maritime lawyer Jim Allsworth told CNN the maneuver is "fairly standard" in the case of a ship taking on water and in danger of sinking or capsizing. The best thing to do is to put it aground to stop it sinking. Italian newspapers La Repubblica and Corriere della Sera on Wednesday published excerpts from a telephone conversation Schettino had with a friend after he was arrested January 14. The captain was calling his friend from the prosecutor's office, and the phone was tapped by authorities, the newspapers said. Schettino attorney Alessandro Antichi confirmed the wiretap, but would not comment on the conversation. The information should not have been published, he said, as it is part of the investigation. "In my place, someone else wouldn't have been so benevolent to have gone right under there, because they have pissed me off, go, go there," Schettino said, in an apparent reference to getting close to the island, according to the newspapers. The shallows were there but it wasn't signaled by the instruments that I had and I went through ... in order to follow what the managers wanted. The man behind the steering wheel, Jacob Rusli Bin, told investigators that after the ship struck the rocks, Schettino cursed and said he had not seen them, La Repubblica reported. In his deposition, Schettino defended his decision to not evacuate the ship immediately. "It's not like I can have a black out and immediately say, 'Let's all get out of here,'" he said. Where do I send these people? I need to have the certainty and reach my decision on the fact that the ship is like that (no longer capable of floating). I am not going to put at risk the lives of 4,000 people. Cruise ship passengers described a scene of panic and confusion as they rushed for lifeboats. Some said the crew seemed overwhelmed and did not have accurate information on what was taking place. Schettino also described the chaos in the transcript, saying he helped passengers onto lifeboats and that some became stuck because of the angle of the listing ship. He said he was trying to launch a lifeboat when he realized he was no longer on board. I was then on the lifeboat. It isn't as if I had boarded it," he said. Look, I fell on its roof. However, in the wiretapped conversation, Schettino tells the friend, "When I understood that the ship was tilting, I decided to leave, and left," according to Corriere della Sera. A captain's leaving the ship with passengers still aboard is difficult to defend, said Italian criminal defense attorney Ugo Meucci, who does not represent Schettino. "This is a very difficult position because our law is very strong, and the risk is very high for the captain," who could face a 15-year jail sentence, Meucci said. Schettino has resolutely defended his actions after the ship hit the rocks, and insists he kept his bosses at Costa fully informed of the accident's severity. "The gash (in the ship) was immense," the captain said in the wiretapped conversation. There was this projection of rock, and then all what I did afterwards, I did it with my most professionalism, and this can help me alleviate or at least give me the illusion to be at peace with my conscience. "I'm proud of the fact that we saved almost all (the passengers)," he tells the friend. ..." I went around picking up people at sea and I'm at peace. Schettino also tells the friend, "I don't ever want to go back on ship." CNN's Hada Messia in Rome contributed to this report.