Decompression algorithm choice

[SSpiffy]

I just bought a VT-4.0; my usual dive buddy uses an Atomic Cobalt with their exclusive algorithm. Which decompression algorithm setting (PELAGIC DSAT* or PELAGIC Z+) would be a better starting point to get our dive profiles in sync?

 

[SSpiffy]

I compared the NDLs on his Atomic Cobalt with conservatism cranked to 11 to the four possible models on the Oceanic VT-4.0. The model that most closely matched his was the PZ+ without conservatism turned on. As someone in the thread in the Atomic forum suggested, they were most divergent at shallow depths.

Here's an Excel spreadsheet with the data on it.

 

[scubadada]

I'm not at all surprised that the closest match was PZ+ without conservatism. The DSAT alogrithm is more liberal. It will be interesting to see how the closest match performs over repetitive dives. Only your diving experience will tell, I hope you will post your experience.

Good diving, Craig