I got my first C-card in 1977 after over a decade of diving uncertified. I only got the card because it had become very difficult to get my tank filled. It was a PADI Basic Scuba Diver card and fulfilled my only requirement at the time: to get my tank filled. But, over the following years, the meaning of "Basic Scuba" changed and I found myself being increasingly limited because the rating no longer meant what it had in the '70s. So, in 1992, I got my PADI Open Water Diver card. Lately, I have been thinking about going for the Advanced Open Water card because, once again, the parameters of the OW rating seem to have changed.
Basic Scuba Diver 1977: No BC, buddy breathing taught for OOA because octopuses were not yet in vogue. Routinely diving to 100+ feet.
In 1984, my wallet was stolen and my replacement card read "Alternate Air Source Required." I pretty much ignored this and continued to dive my way. The card was just to get air fills, anyway. But more changes were on the way and by 1992, more restrictions had been added.
Now, as I understand it, a Basic Scuba Diver cannot dive without a DM or instructor present.
In 1992, the OW was pretty much like the Basic Scuba of the '70s and I was happy once more.
I quit diving in 1996 (for various reasons) and only recently got back into it, only to learn that the OW rating has accrued some restrictions (like max depth) and it seems I am going to have to go for AOW just to stay where I've been since 1965. This wouldn't be worrisome but I am considering going on some dive charters and I don't want to be limited to current OW parameters.
Another thing, I guess I'm gonna have to start keeping a log book. I have never logged my dives because I didn't think it important. But recently I was told that some charters will not allow a diver to dive without a log book with recent dives logged or require that such a diver take a refresher course before going on a charter. Even if I did have a log book, 90% of my logged dives would be marked "solo." I'm sure I would get a few raised eyebrows over that. It seems I just don't fit the mold that modern divers are being cast from.
It kind of rankles a little bit, but I guess I'm gonna have to make a few changes if I want to infiltrate the modern dive scene. Or, at least, pretend to.
BTW, what the heck is a "Master Scuba Diver" and what do you do to get the card? I've heard that it is meaningless and if this is true, then what is the point?