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Tag Archive: ascent


Scuba diving skills and techniques

 How to Judge Your Ascent Rate Without a Dive Computer by Andy Davis Novice divers often express frustration about how to best conduct safe and controlled ascents from their scuba dives. In particular, I see many new divers questioning the best technique for judging their ascent speed.  The common use of dive computers has automated […]

Sidemount Technical Wreck Diving Subic Bay Philippines

How to Dive with ‘Insta-Buddies’ by Andy Davis The term ‘insta-buddy‘ is popularly used within the scuba community to define a diver of unknown skill, capability and mindset – that you are paired with on a dive boat.  Typically, this term is used to describe the worst case scenario; of a scuba dive buddy who […]

Sidemount Technical Wreck Diving Subic Bay Philippines

Choosing and Using A Redundant Air Source By Andy Davis Pony cylinders are a popular choice amongst divers who seek a redundant form of air supply as a contingency for Out-Of-Air (OOA) emergencies when scuba diving. There is a lot of debate about when, or if, a recreational open-water diver should need a redundant air […]

nitrogen-narcosis-critical-flicker-frequency-fusion-study

Does Nitrogen Narcosis Impairment Persist? by Andy Davis. A new study on nitrogen narcosis challenges the long held presumption that nitrogen narcosis impairment dissipates immediately on ascent from depth.  A scientific study, ‘Persistence of Critical Flicker Fusion Frequency Impairment; Evidence of Prolonged Nitrogen Narcosis,’ first published in 2012 in the European Journal of Applied Physiology, by Costantino […]

best ascent speed for scuba diving

Best Ascent Speed for Scuba Diving by Andy Davis Disclaimer: The opinions expressed in this article are those of the author, and they do not reflect in any way those of the dive training agencies to which he is affiliated. Information presented in this article is not intended to advocate breaching the Safe Diving Practices taught […]

Sidemount Technical Wreck Diving Subic Bay Philippines

ANDI Ascent & Descent Procedures – Open Circuit Diving During all ANDI training courses, students are taught to follow a set system of procedures for ascent and descent.  These procedures include a number of stops, to enable team cohesion, increase safety and conservative off-gassing. You don’t need to be an ANDI trained diver to appreciate […]

Sidemount Technical Wreck Diving Subic Bay Philippines

I’ll be running an Advanced Buoyancy Workshop,  in Subic Bay this Saturday (4th June 2011). Workshop will focus on; Precision weighting Horizontal trim perfection Advanced propulsion techniques (frog kick, modified flutter kick) Advanced control techniques (helicopter turn, back kick) Precision ascents, descents and stops Suitable for divers of all ability levels, who wish to improve […]