The US government is required to publish reports of criminal activity on cruise ships every quarter. They haven't all year.

• The US is required to update data surrounding criminal activity on cruise ships once a quarter.
• The data, organized by cruise line, includes alleged sexual assaults, theft, and homicides.
• The data hasn't been updated on the Department of Transportation website all year. 

The likelihood of becoming a victim of a crime is probably the last thing on your mind when booking a cruise vacation — but it happens more often than you may think.