| The biggest danger with rb's is that you have to know you have a problem. With OC it's very apparent, with CC it isn't. You are depebdant, even on manual rebreathers, on electronics, on a chemical reaction, on the integrity of engineering and probably the most sobering of all, two very flimsy small rubber discs. With OC it is designed to stop and provide you with a back-up, CC doesn't have this pleasure. CC tries to give monitoring systems/procedures but these have to work and you have to know how to use them. Maybe because I've never been taught any better (never been taught at all) my view in my fairly limited experience of RBs is "if in doubt bail out". |