My best guess is that this is global data and there were some shoddy ferries and high profile ferry losses that resulted in many deaths. I’m in an area with a big ferry system and we have functionally 0 deaths due to the ferry system over a long period of time.

How many collisions have you been in? I’ve been in 3 car collisions, 2 of which had injuries. I’ve been in 0 flight collisions/crashes.