BUT when I did my TDI course last year the Nitrox Instructor told me that the Japanese when they do their Open Water/BSAC Novice or equivalent do the Nitrox course as well. Whilst doing my BSAC Novic 1 & 2 in 1995 I don't think I could have coped with all the maths at the time (plus a confidence thing) but TBH if I was an instructor I'd consider doing the Nitrox course after the basic courses before doing any more courses (i.e. AOW/Rescue/Bsac Sports). BTW I hate courses. Which is why I'm not an instructor. I just dive with one. Easy life
