uncfnp
Solo Diver
Good point and question. As many may know from the dive computer threads I dive a very conservative computer algorithm so with those long dives I often found myself having to ascend to a shallower depth somewhat earlier then others to keep it happy. After the two deepish dives on the second day I asked if I could shoot a bag and ascend earlier then the group so others were not limited by my personal issues. I was told this was not an option so to keep diving I compensated with longer shallow diving at the end of the dives. But some of my dives with Aldora also had air users on board and since it was ascend together those dives also had a fairly long portion of shallow diving. I dive a Shearwater so I have the graphics for all my dives if you like.Uncfnp, since you got a chance to dive the ops back to back, you might be in a unique position to answer. Did they structure the dives on the sites the same way? I'm generally not air limited when diving off a rec dive boat; just good genes I guess . In Coz, even on nitrox, on many days my computer (not particularly conservative) is "talking to me" by the end of the second dive. I'm not a "go deeper" cowboy, but if I'm diving a reef, I'm down on the reef. I generally get 60 - 70 min. dives with my op of choice. After checking my log, many of my dives have avg. depths of 55'+ which is a bit deeper than you mentioned (maybe yours was an average of averages). I like the idea of longer dives. I'm wondering how others are getting 80 and 90 min. dives on what I assume are the same sites without hanging shallow or somehow structuring the dives toward the shallow end. In my experience, with Coz guide rules & drift diving, the DM/guide has a bit more of an impact than in other locales where you can do more of your "own thing" if you choose. Did it "feel" different? Maybe my guys have been taking me deeper to shorten the dives... (j/k about this) Any of you other guys & gals that have used both "standard" and "big tank" ops in Coz?
But yes, I would say they are structured the same with the initial dive deeper then a shift to shallower section to end. With Aldora the "deep" would be 20 to 35 minutes then a middle section for 25 minutes, then "shallow" until time for the safety stop of 5 minutes. With the second "shallower" dive there was less variation with the majority of the dive at a fairly consistent deep but still ending with a fairly long shallower section followed by the 5 minute stop. This was pretty much the same with Tres Pelicanos except the initial "deep" section was shorter.
I found my conservative settings on my computer was much happier with the Tres Pelicanos dives, even 4 dive days, then the Aldora profile. On no days did I exceed ndl's with Tres and in fact rarely got close.
Last edited: