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Tag Archive: theory


Technical versus Recreational Scuba Diving:  Why is there a need for Rules, Boundaries and Limitations? There is currently a strong debate about the need to differentiate between recreational and technical scuba diving. Some people believe that ‘diving is diving’ and question the need to draw a distinct boundary between recreational and technical diving pursuits. In […]

decompression theory technical diving

Decompression Theory – Links and Resources Here is my selection of educational articles and resources for further reading on scuba diving decompression theory… –  Bubble Decompression Strategies by Eric Maiken –  VPM Decompression Site by Eric Maiken –  Confessions of a Mortal Diver by Richard Pyle –  The Importance of Deep Stops by Richard Pyle –  Half-Times Explained by Mark Powell –  Deco Lessons by Erik Baker (pdf) […]

technical diving subic bay philipines

An abridged version of this deep stops article was originally in DeepTech, 5:64; and the full version subsequently published in Cave Diving Group Newsletter, 121:2-5. The Importance of Deep Stops: Rethinking Ascent Patterns From Decompression Dives by Richard L. Pyle Before I begin, let’s make something perfectly clear: I am a fish-nerd (i.e., an ichthyologist). […]

Sidemount Technical Wreck Diving Subic Bay Philippines

Calculating ‘No Stop Time’ by Erik C. Baker, P.E. The following is an explanation about calculating the “No Stop Time”: Starting out with the basic Haldane equation (keep in mind that this equation is for a CONSTANT DEPTH profile, not for ascents or descents): P = Po + (Pi – Po)(1 – e^-kt) which states that P, the […]

gradient factors

Gradient Factors by Matti Anttila Ph.d Remember your first diving classes and the lesson about bubbling soda bottle and too rapid ascents? No matter how deeply you study the decompression theory, this soda bubble analogy is still valid. However, it’s time to introduce some more fundamentals of the issue. But let’s start from the history: […]