How Deep Can You Dive Using Air?
There are three governing factors which determine how deep can you dive using air. Understanding those factors promotes safe gas selection.
Read MoreHow Deep Can You Dive Using Air?
Andy Davis Sidemount Technical Wreck Diving Blog
Articles for beginner to expert scuba divers
Andy Davis Sidemount Technical Wreck Diving Blog
Articles for beginner to expert scuba divers
inert gas narcosis diving
CO2 Narcosis and Hypercapnia When Scuba Diving
Did you know that mild CO2 retention (hypercapnia) causes acute CO2 narcosis symptoms when you are diving? Don't assume it is nitrogen!
Read MoreCO2 Narcosis and Hypercapnia When Scuba DivingWhy Do Divers Use Helium?
Find out the three reasons why divers use helium in their breathing gas to increase diving safety. Scuba agencies have differing policies on training for helium diving.
Read MoreWhy Do Divers Use Helium?Scuba Diving Anxiety & CO2 Narcosis
Did you know that scuba diving anxiety can arise from CO2 narcosis? Learn why descent speed, gas density & exertion can affect your dives!
Read MoreScuba Diving Anxiety & CO2 NarcosisScuba Diving Descent Speed: What You Need to Know!
This article has everything that you were never taught about scuba diving descent speed! What effects and issues does the descent rate have?
Read MoreScuba Diving Descent Speed: What You Need to Know!Nitrogen Narcosis: Why It Is Hard to Know You Are Narked
How do scuba divers perceive nitrogen narcosis? Is it possible to gauge your susceptibility to narcosis & make sound judgments to manage it?
Read MoreNitrogen Narcosis: Why It Is Hard to Know You Are NarkedDoes Nitrogen Narcosis Impairment Persist?
A new study on nitrogen narcosis challenges the long held presumption that nitrogen narcosis impairment dissipates immediately on ascent from depth.
Read MoreDoes Nitrogen Narcosis Impairment Persist?Nitrogen Narcosis Sedation & Consciousness
Nitrogen narcosis sedation is diminished consciousness: not the alcohol-like intoxication many divers are taught.
Read MoreNitrogen Narcosis Sedation & ConsciousnessScuba Q&A: Deep Diving Below Recreational Agency Depth Limits
Scuba Q&A Question: I was taught that “recreational divers plan all dives to be no stop dives” and also that most agencies consider 40m /130 feet as the maximum depth for recreational deep diving. That seems inconsistent when my…