It’s important to remember that there are plenty of dangerous, extreme activities available on cruise ships and on the coastal tourist spots along the way. Between 2005 and 2018, there were 448 major cruise ship accidents reported. 16 people died in cruise ship accidents between 2005 and 2011.
Recreational equipment failure may be to blame for a large number of cruise ship accidents, but there are plenty of on-board safety concerns, including but not limited to:
Loss of power resulting in being adrift at sea
Fire (101 incidents since 2005)
Plumbing issues (bursting pipes, overflowing toilets, etc.)
Spread of viruses