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Frank, NITROX has depth limits depending on the mix. For the deeper
depths where decompression becomes an issue, NITROX becomes poisonous and can
result in convulsions due to increased oxygen partial pressure. I agree with the horse-collar BC but it can’t be inflated
until you our outside of the sub. Inflation needs to be from the bail-out
bottle or multiple CO2 cartridges. The military still uses
horse-collar BCs. The hard float just complicates issues and further crowds an
already cramped space inside of most PSUBs. R/Jay From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of ShellyDalg@aol.com Could you use a 40 cu.ft. pony bottle with nitrox as your escape
air? That would eliminate the added nitrogen. I've been looking at
the bottles on ebay and they are small diameter so someone thin like
me could strap it onto their chest while exiting the sub. A horse collar
flotation device ( haven't seen one of those for many years ) would also fit
through the hatch easily. As for flotation, maybe a hard float under the hatch
so when the hatch opens, it floats up and takes you with it. Frank D.
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