italian cruise ship costa concordia has just left the port of civitavecchia. the more than 4,000 passengers and crew on board had no idea of the terror that was about to unfold. >> and all of a sudden, bang. the lights went out. and the ship lifted. >> the side of the ship is now the bottom of the ship. >> everybody was panicking, everybody was running for their own lives. >> it showed the kind of chaos, the ill preparedness the company had. >> and i can remember thinking, oh, my gosh, we're going to die. let's just get it over with. >> today, the costa concordia lies on its side off the italian island of giglio. one of the largest cruise ships in the world ripped apart by rocks. 32 people died on the ship, on that cold january night. a cnn investigation has pieced together the multiple failures of that night and their far-reaching consequences for the cruise ship lines. the tragic mistakes onboard the costa concordia raise the question, just how safe is going on a cruise? >> the safety of our passengers and crew is absolutely essential to our business. >> the

italian cruise ship "costa concordia" has just left the port of civitavecchia. the more than 4,000 passengers and crew on board had no idea of the terror that was about to unfold. >> and all of a sudden, bang. the lights went out. and the ship listed. >> the side of the ship is now the bottom of the ship. >> everybody was panicking, everybody was running for their own lives. >> it showed the kind of chaos, the ill-preparedness the company had. >> and i can remember thinking, oh, my gosh, we're going to die. let's just get it over with. >> today, the "costa concordia" lies on its side off the italian island of giglio. one of the largest cruise ships in the world ripped apart by rocks. 32 people died on this ship on that cold january night. a cnn investigation has pieced together the multiple failures of that night and their far-reaching consequences for the cruise ship lines. the tragic mistakes onboard the "costa concordia" raise the question, just how safe is going on a cruise? >> the safety of our passengers and crew is absolutely essential to our business. >>