I agree that during training, recommended depths are not depths- they are black and white limits and they are not to be crossed, as the dive operator and the instructor are risking serious consequences should something happen.
If you break the speed limit while doing ur driving test - you fail. Once you pass ur test you can go whatever speed you like (assuming u aint caught
). The recommendations are purely that...
HOWEVER!
Can someone explain to me, how a recently certified Open Water Diver, can decide whether or not he or she is "ready" for their first post cert dive in 22metres of water, when they've yet to dive in 5 metres of water without an instructor or DM watching over them. Sorry, but IMHO thats just rubbish, and any dive operator who lets someone with that background, goto that depth has no interest in safety and no idea of realism, just an interest is raking in the $$$, as no doubt that diver will return because "XYZ operator doesn't make us dive within our limits".
There is no way in this world i or any of the instructors who teach at our LDS, would even suggest to any recently certified OW divers that they should just jump in a boat and go for an 18m dive. I like to think that i base my actions on safety and honesty to the students, start with simple shore dives with each other, go back to the place we did the training and dive there until you get used to planning a dive on ur own and get used to working properly with a buddy.
Gradually, and slowly is the best way. Admittedly i didn't have this point of view when I first certified, and recently certified divers may disagree with what I've said, but i do realise how important safety is, especially in the conditions we train in.
But as always, only my $0.02
SF