>> All stage and deco bottles must be marked with 3" MODs on both sides
>>of the bottles so that the MOD is easily visible to other divers while
>>submerged.

Bill,

what's the argument for this, rather than %O2? (I assume we're agreed,
insufficiently marked stages are suicidal). Do you have favourite mixes
for a given MOD (I have visions of sport divers painting MOD 66 on their
air bottles) or is it decided for each dive plan?

more importantly, how does one avoid putting the wrong reg in the mouth?
When someone brains themselves with the wrong stage I'm at a loss to see
how to prevent them - they're trained, they know what 80% means.

In recent incident reports people have managed this even with different
shaped regs. During the sidemount thread different hog'ers advocated
wearing stages stacked deepest closest and shallowest closest. 


final point: how about a marker on your MOD's to clarify they're in
feet? Being English and calibrated in meters, if I found a bottle marked
120 at the bottom etc ... intuition may tell me it's too small to be a
useful 360' bottle, but this requires more thinking than "20% O2, not
right"

>Phil
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