Lets not forget the real purpose of a c-card beyond actual training and learning. As a dive op (DM or instructor) if I take you on a night dive and something happens to you, I can and will be sued if you don't have that c-card.
I have people ask me things like this a lot. On a recent trip we ran someone asked me if her boyfriend could dive nitrox even though he was not certified for it. As an instructor I have to say "NO". I would not knowingly dive with or allow (if within my power) someone to dive in conditions or limits past their level of training. I don't like being sued.
I have people ask me things like this a lot. On a recent trip we ran someone asked me if her boyfriend could dive nitrox even though he was not certified for it. As an instructor I have to say "NO". I would not knowingly dive with or allow (if within my power) someone to dive in conditions or limits past their level of training. I don't like being sued.