I'm taking notes here as I'm usually the one you are wondering about
I'm not sailing watches, heck I'm only day sailing. I don't even wear a watch.
Seriously though - I go through the litany when I bring a new person (not just crew) aboard, you know, life preservers here, fire ext. there stuff. I never ask if they know how to use it, or more importantly when. I assume they do not.
No one helms my boat sans me over the shoulder without I watch them first.