Not all of the Costa Concordia’s control systems were working. But the most serious anomaly, according to the experts’ findings, concerns the 'black box' (Voyage Data Recorder') which had not been working since 9 January, four days before the shipwreck that cost thirty-two lives. Experts appointed by the court of Grosseto put this in their report, also pointing out that they had only been able to examine data from the ship’s computer. They had to work on incomplete evidence since no data at all was recorded after 11.36 pm on 13 January. This means that most of the evacuation of the ship took place “in the dark”. They were also unsure whether data recorded on the computer, rather than on the malfunctioning 'black box', had been interferred with in some way.