And this has to do with what exactly? Did you know that you can get bent even doing one single dive? DCS depends on a large number of factors - from sawtooth diving profiles to taking hot showers. I find it funny that I seem to be among the few that understand this in that club.Jasminka:DAN reports its member getting bends: 16 dives in a week on the last day of diving 3 dives to around 35, 25, 29 metres for about 40-50 minutes.
I also find it funny that you should throw DAN report at me since me and my buddy also seem to be the only direct DAN members in that club.
Don't you know how to use the dive tables? You CAN plan repetitive DIVES with both PADI and CMAS tables. There are other tables as well, but I won't go into that since we're talking PADI and CMAS here. There's also such a thing as the RDP Wheel for multilevel dive planning. Then, there are computers - you can also use them to plan your repetitive dives.Jasminka:I was also wondering how do you plan your third and fourth dive if the table only show you the groups for the second consecutive dive?
Anyway, here's the breakdown of that day:
1st dive: time 13:28; bottom time 38 minutes; depth 22 meters
2nd dive: time 19:05; bottom time 33 minutes; depth 18 meters
3rd dive: time 21:57; bottom time 43 minutes; depth 11 meters
According to square profile PADI tables I'm out of NDL on the first dive, but in reality - this was a multilevel dive with only 1 minute spent below 20 meters. During most of the dive the depth was just 7-8 meters. I'll use max NDL time for PADI tables:
Thus, after the 1st dive I end up in group "S". Add surface interval and RNT to this and after the 2nd dive I end up in group "O". Again, one SI and RNT later and the third dive (the night dive) leaves me in group "N". Wow, I'm alive!
But, you say CMAS tables are better than PADI? Ok, here's where it gets interesting. First, let me point out that it clearly says CMAS tables are used for repetitive DIVES. Not one dive, but plural. If you haven't got CMAS tables let me point out this link for you: CMAS dive tables pdf. Check the page 11 - it clearly states "DIVES" with an "S".
Back to calculations:
According to CMAS tables, after the first dive I ended up with the group "F". After the surface interval I'm group "A". Adding RNT to the second dive and I'm back to group "F". Surface interval drops me down to group "A" one more time before the third dive after which I find myself in the group "E". At this point I'm done diving for the day and look what it says for group "E" on CMAS tables: "After 4 hrs my RNT is 0!" Again - I'm alive and bubble free the next day!
Incidentally, CMAS tables use Buehlmann algorithm which is also the one my Aladin uses but wasn't diving on it because I gave it to another club member to use. I dove using my other computer - Stinger which is even more conservative (and uses Haldane algorithm, but that's irrelevant) and I was well within limits of it as well.