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What is DIR?

DIR is a holistic approach to your diving mentality, diving fitness level, gear configuration, and right attitude. DIR promotes a certain physical and mental readiness to dive by having the right attitude and fitness level to dive safely. DIR focuses on a buddy team approach, which provides redundancy for the most important piece of dive equipment, your brain. Without the proper mindset and attitude, you’re jeopardizing you and your buddy’s safety. A positive and solid mindset about diving and safety are the primary points of DIR. No matter how much training you have or how much great gear you own, it won’t help you or your buddy if you have an unsafe and reckless attitude. The mantra of DIR is “don’t dive with unsafe divers.”

Good buddy skills, a good attitude, quality diving skills, and fitness are some of the primary things DIR teaches. Learning these skills increases the safety of you and your buddy’s dive and makes the dive more fun and relaxing.

One of the big DIR teaching principles concerns your gear and how it’s configured. Gear configuration is based on a Hogarthian setup. Hogarthian gear configuration stems from William Hogarth Main, who has always worked on his gear setup to find the optimal setup that promotes safety, streamlining, reliability, and is easy to use. Hogarthian diving is the concept of taking only the gear you need on the dive and placing that gear in the same place every time no matter what kind of diving you’re doing. Placing the gear in the right place is also essential in the Hogarthian configuration. By placing the gear in the right place every time, your dive facilitates quick responses in an emergency situation. Plus, you and your buddy also know exactly where it is at all times. Consistency, proper placement, reliability, and a minimalist approach are the heart of DIR equipment configuration.

DIR embodies the principles of simplicity, functionality, minimalism, process, and reliability. These terms each define the backbone and basis of the DIR approach.

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Technical Diving and Stress

by David Miner

Stress is a medical term for a wide range of strong external stimuli, both physiological and psychological, which can cause a physiological response called the general adaptation syndrome, first described in 1936 by Hans Selye in the journal Nature. As we all know, stress surfaces in our everyday lives and can affect everyone differently. Being late for a meeting, trying to juggle too many things at once, or dealing with a loved one’s death can all induce different levels of stress. Almost anything in life today can cause some form of stress, whether it’s physical stress or psychological stress. Learning how to deal with stress is something we begin to do very early in life, and everyone’s ability to cope can be different as well as change over time.

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Hedging the Bet Against Oxygen Toxicity

by Tim Peever

Some Physiological Factors and Possible Controls of Oxygen Toxicity

Oxygen Toxicity manifests itself in two ways, pulmonary oxygen toxicity and central nervous system (CNS) oxygen toxicity. Of these, CNS oxygen toxicity is the most serious concern to scuba divers.

Pulmonary oxygen toxicity involves attack on the gas transfer membranes in the lungs by oxygen free radicals from long-term exposure to high partial pressures of oxygen. The time involved to manifest symptoms of pulmonary oxygen toxicity is many hours and would not affect a diver except in cases of recompression therapy.

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What’s so Technical About Technical Diving?

by Ron Carlo

CCR rebreathers and decompression diving fit the definition of technical diving

Good question. Or maybe this should be titled “Just What IS Technical Diving?” That’s what I’m going to discuss. Here’s what I’m going to touch on in hopes you’ll come away with a desire to pursue this exciting side of diving:

1. What technical diving is
2. What technical diving encompasses
3. Some equipment needs
4. Training options

Technical diving is often considered: 1) A discipline that utilizes special techniques, equipment, training, and skills to improve underwater performance and safety; 2); Any diving that involves deeper and longer exposures than traditional recreational standards; 3) Diving in an overhead environment of a wreck or a cave where the diver cannot freely ascend to the surface, 4) Akin to the spirit of rock climbing and wilderness trekking, where the motivation for tech diving is a personal challenge and a thrill of exploration; 5) Having more stuff than you can carry and couldn’t possibly ever pay for when you get the credit-card bill.

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