Originally Posted by Jelly
There was a case in the offshore siesmic industry a few years ago then auto life jakets cost the lives of two people when they got trapped inside a cabin on a work boat when it inverted. The crew on deck survied.
That sounds like an exceptional situation, but it does raise the question of auto or manual in an enclosed cabin.
In that case there is more chance of getting trapped, and less chance of being ejected from the boat, so a manual would probably be the preferred option.