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RE>>Decompression efficiency and cold 3/30/95
As a coldwater drysuit diver (38-42 degree average temp), I have the
following responses to several of the comments on this topic.
1. Wearing a wet suit under a dry suit.
This is a poor idea from a temperature control and buoyancy control
standpoint. Even in very cold waters most diver will overheat during the
dive. Also the added buoyancy requires added weight and work on the dive
further increasing over heating.
2. Underwater repair of most drysuits is either impractical or impossible.
It is possible to apply a patch such as duct tape to a vulcanized rubber suit
underwater, however the likelihood of repairing a major tear underwater is
low.
3. Dive and equipment planning. If the potential of major hypothermic
exposure is a problem use a suit know to be very tear and puncture resistant
and have the necessary surface support available. Our standard dive procedure
for a major suit flooding are:
1. Proceed with decompression as long as reasonable possible or you reach 20
foot stop with significant time remaining.
2. Surface and rapidly change equipment (i.e. dry underwear and new suit)
reenter water and begin in water recompression schedule on highest %oxygen
available (we carry 120-240 cu ft of 100% O2) .
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