DIR- Generic What constitutes a Tech-1 dive?

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ISE has been around about a decade, basically just as long as UTD. AG and Achim got the GUE boot at basically the same time.

So you have a spectrum:
UTD - no renewals needed
GUE - "25 dives" on the honor system
ISE - pay me to evaluate you again

Wow this is a totally new perspective ... GUE is middle of the road, almost maintstream! ;-)
 
https://www.shearwater.com/products/perdix-ai/
http://cavediveflorida.com/Rum_House.htm

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