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I went diving this past weekend and, as I have been doing for a while know, I took my CO analyser with me. I was diving with an OP I trust and did not expect to find any trace of carbon monoxide. Still, I went on and tested the tanks. First, it was my buddy's tanks (doubles) that were...

I am interested in knowing what are the theoretical and practical bases for planning decompression using gradient factors Low and High. That is, the reason behind choosing a Gf Lo and a different Gf Hi. Why ZHL-16C 40/70 and not ZHL-16C 70/70, for instance. The reason for introducing Gf (lo)...

From Riviera Maya News:

A few weeks ago I finally got to read Sheck Exley's "Basic Cave Diving: Blueprint to Survival". I found the book to be very interesting both because of how current it still is in its lessons and because of the differences in equipments and techniques used then and now. In particular, it is...

The impossibility, while doing technical dives, of always having a neutral rig or of having discardable weights makes it more complicated to plan for loss of BCD function than in recreational dives. This is often solved by using a drysuit. This solution, however, presents a problem in places...

This is a question about a type of diving I am not (but hopefully will be sometime next year) qualified to make, but about I have been thinking nevertheless. It is my understanding that dives made in caves do not usually correspond to a square profile, or even a multilevel profile with readily...

I am now taking an Advanced Nitrox course and came into a discussion about possible consequences of skipping parts of a deco schedule. More specifically, the argument I was presented with was as follows: in the event that you find yourself in a situation in which you will not be able to complete...