Back in early April whilst in the Red Sea one of our newly qualified advanced divers came to me with their log book looking very puzzled. We had just done a dive to 28 metres for 56 minutes and having referred to the RDP to make a record of the dive confusion now reigned as the maximum time for a no decompression dive was coming out at 20 minutes. What was puzzling our intrepid diver further was that her computer was fine with what she had done. At the time my explanation that the actual dive profile meant that we had not spent much time at 28 metres and most of the dive was actually at much shollower depths quickly dispelled the confusion and concerns. But how then to keep the log book neat and record the pressure groups rather than just a note about diving this one on a computer? So I promised that I would reveal the mysteries at a club night at the same time as encouraging the student to extend their education into the realms of multi level diving. So it was that last weekend I recovered my diving wheel from its' safe and undisturbed home in my log book and calculated some devilishly fiendish dive profiles to discuss at our club night.
On Thursday night all was revealed at our club night. We started the night by presenting certificates for some of the club who had recently qualified including Nicki, Annabel, Gill, Paul, 
Louise (represented by Mum and Dad) and Julie.
Then it was down to business. I covered a little bit of history and theory including some brief explanations of compartments, halftimes and M-Values. We then all had a go at remembering how to use the RDP before using some worked examples of using the wheel. It was really rewarding to see that everybody picked up on what they needed to do and they are all now in a position to plan their dives more accurately, not having to rely on the computer and just as importantly they will all now be able to fill in their log books confidently.
Louise (represented by Mum and Dad) and Julie.Then it was down to business. I covered a little bit of history and theory including some brief explanations of compartments, halftimes and M-Values. We then all had a go at remembering how to use the RDP before using some worked examples of using the wheel. It was really rewarding to see that everybody picked up on what they needed to do and they are all now in a position to plan their dives more accurately, not having to rely on the computer and just as importantly they will all now be able to fill in their log books confidently.
Now all they have to do is complete the Multi-Level Diver Specialty and they can't go wrong.
It was a very good night overall and thanks to those kind enough to join me in the pub afterwards, hic!
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