The Coast Guard issued a list of the top cruise ship safety deficiencies that they found in 2014. They are:

• Fire Screen Doors not Operating Properly (31 occurrences)
• Impeding Means of Escape (26 occurrences)
• Drills and Crew Training Issues (25 occurrences)
• Problems with Lifeboats and Rescue Boats (21 occurrences)
• Improper Utilization of Categorized Spaces (17 occurrences)
• Problems with Fire Detection systems/Smoke Detection (13 occurrences)
• Fire Suppression Systems (12 occurrences)
• Issues with Pollution Prevention Equipment (9 occurrences)
• Emergency Lighting Issues (7 occurrences)
• Fuel and oil leaks (7 occurrences)

The complete summary of their findings is contained in this link.