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Hi David,

You have raised a rather interesting question (the definition of tech. 
diving), to which I am afraid, there may not be a single concise answer; 
similar to how many angels can dance on the head of a pin or how do you 
define "great" music.

However, the answer that I like to think about and discuss with my students 
is that tech. diving involves underwater situations where should a problem 
should arise, a rapid ascent to the surface is not a possible solution to the 
problem.  That is, some other answer to the problem must be found, and it 
must be found underwater.  This definition encompasses activities such as 
cave diving, wreck penetrations, ice diving, and decompression diving. 

This clearly is not a universally accepted definition of tech. diving in that 
there are certainly questionable gray areas.  For example, I personally have 
difficulty considering a rebreather dive to be a tech. dive if there is no 
decompression required at any time during the dive.  But there are other 
opinions.  And my definition has no reference to the commonly accepted 130 
ft. recreational diving depth limit.

I think it would be interesting to get some other opinions from the members 
of this list, as to their definitions of tech. diving.

David, thanks for bringing up this thread.  Perhaps we can get some 
interesting opinions generated.

Take care and safe diving,       Scott


In a message dated 7/13/00 2:13:50 PM, David.Applin@ta*.co* writes:
<< Now this is the Techdiver list  -- yes!


Would it be an good idea to define what tech diving is?


Actually define where, in the opinion of the most experienced, the cut off

between recreational diving and tech diving lays? >>

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