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At 03:28 PM 12/31/96 -0800, you wrote: >I wish to purchase an Ocean Technology Systems (OTS) UW ommunication >system that integrates a Poseidon ODIN 2nd stage reg into an Interspiro >(formerly AGA) full face mask. Obviously there is more too this COM >system than the mask and regulator, but my question only concerns these >components. > >What safety issues should I be concerned with? For example, must I >carry a standard mask and snorkel? If I don't carry these spares, and >my FFM 2nd stage fails, what other practical safety alternatives do I >have? Pete, I dive this unit with an OTS buddy phone and love it. The main thing in my opinion is to practice flooding and clearing the mask. I would also recommend the positive pressure (more expensive) mask. It keeps your mask fog free, it's a real pleasure. Now as far as the safety issue... It probably is not a bad idea to have a second mask strapped somewhere so you can see when you switch to your back-up reg. This is a good example of where the WKPP version of where to put your back-up reg is a life saver. If you are going to need air and a mask at some point , why not make at least one of them easy (especially if it's the air)? Then practice switching. The down side to this unit is that you tend to use air a little faster with the positive pressure mask as I never seem to be able to keep a trickle of bubbles from escaping around the seal. The up side is breathing through your nose, and more humid air. Remember to practice the emergency stuff with the unit. Good luck. Bill Elliott
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