Quote: (Originally Posted by
rossh)
Three answers for you Mike...
VPM had one(1) revision.... Is that allowed? And it was done for valid reasons of mathematics.. not bends.
"valid reasons of mathematics" lol
vpm in its earliest form gave too short deco - period. That was fixed with vpmb and fixed again in vpmbe - none of those changes have anything to do with 'mathematics' or the price of banannas
Quote:
A deco diver today has a hybrid of Haldane / Bulhmann with extended, padded GF'd or other custom add ons. . The point is... no one uses man tested data, and every method in common use today is all un-validated, just like VPM.
the
basis of current methods (other than VPM/x) is MAN TESTED models. Yes people have added conservacy but that is additional conservacy ontop of MAN TESTED models. This is
not the case with VPMx where the
underlying model hasnt had anywhere near the amount of validation/testing
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That's your opinion Mike. It's also an insult to those who made these dives.
Well lets see if your list is indeed inaccurate:- 1) Ben didnt use VPMb for Sra Kweo III he used zplanner. Hes a Hyperbaric chamber director and has no love for VPM as I know from our conversations on dive planning for our deep dives together. 2) CV didnt dive to 226m (or 240m or whatever it is now) as reported by Ben his dive partner - who was there and isnt mental and or deaf. (Perhaps you should read what the diver you referanced on the dive you referanced has to say about the dive? => The Deco Stop 3) The yamashiro dive was not to 190m as you quoted on your site - he dived to 176m (big difference at these depths to deco) 4) One of the dives you refferance the diver in question had a vpmb schedule however his ascent rate from depth (and it was a deep dive) was far far far slower than the ascent rate assumed in vplanner when the table was cut. Ergo (given that this was a deep dive) his whole schedule was wrong (by a matter of hours). The diver did the dive by following his original (now largey wrong) vpmb schedule up to around half his ascent then followed VR3buh to last stops then resorted to vpmb table stop times getting out the water hours earlier than VR3buh gave.....The diver was a bit bent (nothing too serious bit of surface O2 then was ok) but you have this dive down as an example of a successfull deep vpmb dive - when clearly its wasnt a vpmb dive (diver actual deco profile didnt match vpm and his dive profile didnt match what was used to cut vpm tables) or a wholey sucessful one (diver was bit bent).
Well two cases of different depths, and two cases of different deco (one wasnt even using VPM in 1st place)
..maybe our definition of accurate id different
Im not splitting hairs here. People (myself included) look at these scarce data points to help us plan our dives - its dangerous and irresponsible if depths, models and outcomes are incorrectly reported