Why would an open circuit diver want to know about rebreathers? As rebreathers become ever more popular, there is a high possibility that you at some stage will dive with a rebreather diver.
If you are diving with a rebreather diver, it is important to understand some rebreather basics. You should know what a warning light or an alarm looks and sounds like and how to react to one as a rebreather diver’s buddy. You should also ask the rebreather diver to brief you on the basics of the handset and its readings. All rebreather divers participate in a workshop that teaches them how to explain the key points and safety procedures for their rebreathers.