Why 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?
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
Dive Theory
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 & ConsciousnessWhat Are The Three Benefits Of Nitrox When Scuba Diving?
The three benefits of nitrox as a breathing gas for scuba diving. Is it worth the cost of training and more expensive cylinder fills?
Read MoreWhat Are The Three Benefits Of Nitrox When Scuba Diving?The Physics of Diving – Scuba Gas Laws Theory
An explanation of the Scuba Gas Laws for Diving. Boyle's Law, Henry's Law, Charles Law, Dalton's Law, Oxygen Toxicity & Partial Pressures.
Read MoreThe Physics of Diving – Scuba Gas Laws TheoryCO2 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 DivingA Simple Guide To Dive Computer Algorithms
Not all dive computer algorithms are created equal. Learn the differences and make an informed decision when buying your next dive computer.
Read MoreA Simple Guide To Dive Computer AlgorithmsWhy Do I Feel Tired After Diving? How To Avoid Post-Dive Fatigue
Do you feel tired after diving? Read this article to understand what REALLY causes post-dive fatigue & the simple steps needed to avoid it!
Read MoreWhy Do I Feel Tired After Diving? How To Avoid Post-Dive FatigueTechnical Diving: Redundant Computers vs Backup Timer & Tables
Discover the pros & cons of redundant computers versus backup bottom timers & tables in technical diving. Which option is best for you?
Read MoreTechnical Diving: Redundant Computers vs Backup Timer & Tables