Rome (CNN) -- Transcripts published Tuesday capture the dramatic conversations between port officials and a cruise ship captain, who a judge ruled can be held under house arrest while Italian authorities investigate his role in last week's disaster.
A judge ruled that Francesco Schettino must remain in custody pending a later decision on whether to release him while authorities investigate the running aground of the Costa Concordia on Italy's Tuscan coast.
But the judge said Schettino can be held on house arrest rather than in jail pending that decision, said his attorney, Bruno Leporatti. The captain has promised to cooperate with authorities, the lawyer said.
Chief prosecutor Francesco Verusio said he did not know the grounds for the decision, which was made after the Tuesday afternoon court hearing.
"I am speechless," he said.
An Italian port official swore in frustration at the captain of the stricken vessel after it struck rocks Friday night, ordering him at least 10 times to return to the cruise liner and coordinate rescue efforts, transcripts of the recorded conversations published Tuesday show.
"You get on board! This is an order!" the port official told Schettino.
"You have declared 'Abandon ship.' Now I'm in charge. You get on board -- is that clear?" the official said in one of the conversations published by the Italian newspaper Corriere della Serra.
Schettino says at one point that he wants to go back on board, then refers to "other rescuers" and says something about a lifeboat being stuck.
"Get on board the ship and you tell me how many people are on board. ... Clear? You tell me if there are children, women, people with special needs," a coast guard officer tells Schettino.
"Get on board, (expletive)!" the officer curses in frustration.
During one conversation, Schettino first says he abandoned ship, only to appear to reverse course under questioning by an official, saying he was "catapulted into the water" but remained on scene to coordinate the rescue.
"I did not abandon any ship," Schettino said, according to the transcripts.
Italian prosecutors confirmed that the quotes match ones in a transcript they were using in their investigation.
Schettino is under investigation by Italian authorities for his role in the disaster, which has claimed at least 11 lives.
Prosecutors say Schettino was on the bridge at the time and made a "grave error" that led to the disaster. The Italian coast guard and Costa Cruises, which owns the ship, are investigating why Schettino took the ship so close to land in an area known for its rocky sea floor.
"Preliminary indications are that there may have been significant human error on the part of the ship's master, Capt. Francesco Schettino, which resulted in these grave consequences," Costa Cruises said.
"The route of the vessel appears to have been too close to the shore, and the captain's judgment in handling the emergency appears to have not followed standard Costa procedures," the statement added.
Corriere della Sera reported that Schettino came close to Giglio to salute Mario Palombo, a legend among Costa Cruises' commanders, and as a gesture to the only Giglio native on board, chief steward Antonello Tievoli.
Speaking on Italian television, Schettino said the problem was an uncharted rock.
"On the nautical chart, it was marked just as water," Schettino said.
But the Italian coast guard said the waters where the ship ran aground were well-mapped. Local fishermen say the island coast of Giglio is known for its rocky seafloor.
"Every danger in this area is on the nautical chart," coast guard Capt. Cosimo Nicastro said. "This is a place where a lot of people come for diving and sailing. ... All the dangers are known."
Local authorities and residents said they believe that after hitting the rock, which tore a hole in the hull, the ship sailed at least half a mile north. They believe Schettino then turned the ship around toward land, where it toppled.
In addition to questions over how Schettino handled himself after the wreck, questions also lingered about whether the captain should have ordered an evacuation sooner and why no "mayday" distress signal was sent.
At one point after the ship struck the rock, the ship returned a radio call from port officials saying that all was well and the ship was suffering only a "technical problem," according to the transcripts.
Schettino joined Costa in 2002 as a safety officer, served as a staff captain and was appointed captain in 2006, according to the cruise line. Like all Costa masters, the cruise line said, Schettino "has been constantly trained, passing all tests."
Schettino had never been involved in an accident before, said Costa chairman Pier Luigi Foschi.
Foschi also downplayed the possibility that alcohol may have played a role in the crash, saying he did not believe Schettino drank, and that all crew were subject to random drug and alcohol tests by Costa Cruises.
The captain's attorney 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.
Captain and consultant James Staples told CNN's Anderson Cooper on Tuesday night that he was "totally amazed" by Schettino's actions. "He should have stayed on board that ship and coordinated the rescue attempts from the vessel."
Staples said the Concordia should not have been so close to the rocky shore at night, with little or no room to maneuver.
Passenger Alex Beach of New Mexico said crew members tried to assist passengers, but had no upper-level supervision.
The scene around lifeboats, many of which could not be launched, was chaotic.
"It became a situation of every man for himself," she told Cooper.
CNN's Holly Yan, Hada Messia, Dan Rivers, Brian Walker, Josh Levs and journalist Barbie Nadeau contributed to this report.