down4fun
Contributor
Tony, have you put substantial hours on an mCCR? Where do you get your conclusion that they are more dangerous at the surface in current, swimming back to a boat, etc. than an eCCR?
I think it's fair to say that both eCCR's and mCCR's are potentially "very dangerous", but I don't see how you can support that eCCR's are safer. I suspect the tendency to think an eCCR is more safe may be at the crux of the higher number of fatal mistakes associated with them. So far, there is no data that supports that eCCR's are safer than mCCR's, the body count even seems to suggest the contrary, and even that is debatable.
G
I know in circle of RB divers I dive with many of them feel the manual ccr's with hypoxic dil are quite dangerous at the surface. To the point, that I know several who will turn off the dil at 20 feet to avoid a hypoxic incident. On a eccr you have the solenoid to maintain the ppo2 at the surface despite your dil. Just my guess. I for one do not turn my dil off until I am on the boat. But that's just me and i am a not an expert by any means.
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