About.com articles by Kris Harrison

3 Factors Ruining Your Scuba Education

I’ve seen a lot of good students with bad instructors and I’ve seen a lot of good instructors with bad students. This has as much to do with the mindsets and motivations of the individuals involved as it has to do with their actual abilities. I find the following three major factors work against both students and instructors in the dive industry:

1. Certification vs Education

When you show up for any level of scuba training, whether it is an open water certification or a technical diving course, your primary purpose is to learn. A student’s primary purpose should not be to receive a little plastic certification card, nor should the instructor’s primary motivation be to issue one. If it is, you should reconsider your motivation for training and pursuing diving.

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Rebreather Diving Basics

Rebreathers, like religion and politics, tend to elicit strong opinions. Divers will endlessly debate the strengths and weaknesses of different rebreather designs and features. This introductory article outlines the basic functioning and components common to all rebreathers, and goes over a few basic differences between types of rebreathers. For help with terminology, check out this glossary of rebreather diving terminology.  Keep in mind that rebreather diving is very different from open circuit diving. It is mandatory to get proper, unit-specific training before using any rebreather, your life depends on it!

A Brief History of Rebreathers

Most divers don’t realize that rebreathers existed before open circuit scuba equipment
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Glossary of Rebreather Diving Terms

The quick reference list of common rebreather terminology will help readers to understand the technical terms used in rebreather diving.

Common Rebreather Terminology

Automated Diluent Addition Valve (ADV): Valve that automatically adds diluent gas to the breathing loop when collapsed either by water pressure or manual activation
Breathing loop: Includes the DSV (Diver Surface Valve), breathing hoses, counter lungs, head and scrubber assemblies

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21 Rebreather Components That Every CCR Diver Should Understand

Rebreather diving is a heavily equipment-dependent sport. Divers who chose to pursue it should be intimately familiar with their rebreather diving equipment. While every rebreather is a little different, it is possible to learn about the components that are common to most rebreather diving equipment.  Learn about the basic parts of a Closed Circuit Rebreather (CCR) using this diagram from the ISC Megalodon CCR. This article can be used in conjunction with the glossary of rebreather diving terms for those unfamiliar with some of the technical language. If you are unfamiliar with rebreather diving, first take a look at Rebreather Diving Basics: What Are Rebreathers and How Do They Work?
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Posted 05/12/2014 by Sirius Diving