A cruise is supposed to be a week of rest, relaxation, and adventure, but for the people on the cruises on this list, it was a nightmare. This list is full of the worst cruise ship disasters in history, from disease outbreaks, to power outages, to shipwrecks. Injuries and fatalities abound.After you read this list, you'll probably think twice about going on that cruise to the Caribbean next winter. Disasters like these are, statistically, not that common. But still, you would not want to be stuck on any of these unfortunate maritime adventures.