Quote:
| Originally Posted by Fraser You'll be lucky guys. Aside from any other issues I strongly doubt that a GUE trained diver will post potentially dangerous information on an open forum. You REALLY need to learn from an instructor and none of us are qualified to explain it.
Also you would need to do two courses (and a lot of hard work between) - this stuff isn't covered on Fundamentals.
Cheers,
Fraser. |
Hmmmmmm... Doesn’t that kind of defeat he object of it then? If its complex, difficult and potentially dangerous how can any one be expected to cope with doing it in a high stress situation during a dive?
Fact is it sounds pretty simple. I am sure I have made a some errors so don’t try this at home but just to give you a basic idea its something like this...
Bottom time is limited to 30mins regardless of depth up to a max depth (60m I think for teck 1) Deco is calculated on a single deco mix of 50%. First stop is 80% of average dive depth. 21m stop is always 5min to open the 02 window on the 50% mix. Remaining stops are calculated for the 3m stop based on a percentage of the depth of the deepest stop. The remaining deep stops are a percentage of the 3m stop, which is then spread over the stops between 21 and the surface working backwards from 6m in 3m increments. The 5min ascent to the surface is included in the decompression schedule. If you start planning 30min dives at varoius depths you will see that there is a loose relationship between the depth and the length of deco.
Putting this information on the net is no more dangerous than selling someone a set of BSAC 88 tables. The only reason the DIR boys don’t tell the story in detail is to keep up the vale of mystery. Any one who attempts any sort of deco schedule without a basic understanding of deco in asking for trouble. The DIR system is no different.
As far as I am aware, the more serious DIR deco dives with multiple deco gas tanks are planned on computers like every one else does and then they are modified to smooth out the deco curve. DIR /GUE even do their own Decoplanner decompression soft where. The DIR boys play games like ignoring the He in the back gas and deco mixes or inputting 25% when they are running a much higher helium content but they haven’t had the confidence to incorporate their belief in the off gassing of He into the actual program its self.
ATB
Mark Chase