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*David Martin* · June 6th, 2007, 08:17 PM

Quote: (Originally Posted by Devon Rob)

AFAIK GUE only uses 80% of ATA`s on Tech 1 depth ranges.
For recreational depth ranges 60% is the norm for the deep stop.
Anyone with Tech 2 care to enlighten me as to what is taught there?

80% for starting the stops (it's more of a change in ascent rate though). Another change at 65%. Beyond that you'll probably be into "non-deep stops". The rules may well break down for very deep dives - but I'm not doing these yet.

Also, I think that at recreational level its 50% (not 60%) of depth for the first stops/change in ascent rate.

David

June 6th, 2007, 08:17 PM	#8 (permalink)
David Martin(Offline) Instructor candidate Join Date: Jan 2006 Location: London, E11 Posts: 426	Quote: (Originally Posted by Devon Rob) AFAIK GUE only uses 80% of ATA`s on Tech 1 depth ranges. For recreational depth ranges 60% is the norm for the deep stop. Anyone with Tech 2 care to enlighten me as to what is taught there? 80% for starting the stops (it's more of a change in ascent rate though). Another change at 65%. Beyond that you'll probably be into "non-deep stops". The rules may well break down for very deep dives - but I'm not doing these yet. Also, I think that at recreational level its 50% (not 60%) of depth for the first stops/change in ascent rate. David