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Yes. If you manually push your PO2 above your standard setpoint, say from 1.3 to 1.6 or even higher, the controller would adjust i.e. shorten the deco accordingly in real time. Or in other words: the controller calculates deco according to the programmed gases and real time PO2 (to my...

According to rumours in the German speaking part of the world, the deceased diver was known to accelerate deco by manually pushing the PO2 way beyond what is acceptable with the MAV. You can't even set the JJ/Shearwater controller to such a high set point. So not an equipment issue, but rather a...

I'm not aware of any manufactures having been held liable for a diver dying using their rebreather, regardless of CE or not. But I'm happy to be corrected, if anyone has more information. See also: https://www.davidconcannon.com/product-liability or: Dive Rite Cleared of Responsibility in...

I can agree with your point about an instructor not being truly independent. After all, an instructor makes a living to a certain extent teaching that rebreather, even if he also teaches other units. However, rebreather diving is such a niche activity, that when an accident happens, authorities...

Does truely independent rebreather investigation even exist? Meaning by an expert who is not directly involved in the manufacturing or training or sale of rebreathers? When a rebreather accident happens, it appears that the authorities involved often have litte to no understanding of...

I honestly believe that CCR divers fully understand that rebreathers can be much more dangerous than open circuit. But they can also provide safety for dives no longer feasible on open circuit. It is a personal choice based on one's own risk acceptance. Similar to riding a motorcycle. Pros and...

Very sad to hear about this accident. What scenarios could lead to a sudden oxygen spike in a CCR? Three which immediately come to mind (assuming the sensors are fine) are: 1. stuck solenoid 2. accidentally flushing with O2 instead of diluent 3. descending too quickly after already setting the...

I simply linked the first article that popped up about the incident, there are plenty of other media sources about the incident…..

fully agree, but media loves sensation grabbing, catchy headlines….

Here's another recent incident from Sydney: Surfers attacked by Southern Right Whale in Manly | Daily Mail Online

I used to work as a guide in the Red Sea. We were always a bit nervous when we had Russian or Eastern European divers on the boat, because they had a tendency to get themselves into trouble due to a more risk friendly and macho attitude (e.g. very deep air diving). And spending some time around...

A Fast Trip to the Top Is Disastrous: Undercurrent 09/2017