Additionally, focusing in on the cruise ship response time isn't really logical. Sure, it could be faster than 15 hours to catch an accidental fall (which it so

Additionally, focusing in on the cruise ship response time isn't really logical. Sure, it could be faster than 15 hours to catch an accidental fall (which it sounds like basically doesn't happen), but in the cited example of a black out drunk person falling overboard or someone committing suicide, the response time could be < 5 minutes and it would still be too late. Someone that drunk isn't going to have the faculties to be able to swim or float, and people looking to die don't want to swim or float.