physiology is physiology....HPNS is still a very real issue when using deep CCRs.
Quote: (Originally Posted by
sasmedic)

HI there
So it seems that for OC attempts the problem is of physiological and gas planning nature and on the Rebreather side it seems like it is the challenge to deal with emergencies that will require hard work as well as problems associated with bailing to OC when the scrubber time is overdue.
I also wondered if there is not a solution that could combine OC and Rebreather for deep attempts?