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Table 1(right) presents the classic view of the progressive effects of nitrogen narcosis based on descriptions in a number of current textbooks (Bennett, 1981; Miller, 1979; Edmonds et al., 1983).
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The best time of my life was when I competed in track and field as a teenager, in college and as a young adult. I continue to engage in sports today, including cross-country skiing, snowboarding, table tennis, basketball and many other sports.
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The fact is that in the advent of a new wave of recreational rebreather divers and the industry trend of making rebreather diving more available, many manufacturers are envisioning their own consumer rebreathers in the short and mid-term.
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Jump back to the summer of 1996 and British Cave Diver Mike Thomas presents me with a copy of aquaCORPS magazine, (and I still have this issue in my office today). It was a defining moment in my diving career.
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This view must be balanced against the teachings of the technical diver training agencies who encourage divers to dive as a team and often cite three as the optimum team size.
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A new category of diving is taking shape in the recreational diving world that sparks controversy and is a cause of great concern. This, in general terms, is diving deeper and staying down longer than the traditional limits.
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Spyrou and Verdier had been discussing diving the HMS Victoria since the summer of 2007.
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Obviously, this definition represents the ideal, and upon honest examination, it’s clear that it has little to do with the reality as practiced by most divers. The truth is that on most dives, the buddy system fails.
Over the years, recreational diving has developed a standard set of equipment configuration. Despite different makes and models there is a consistent set of gear shared by the majority of recreational divers. Buoyancy control is usually provided by a jacket style buoyancy compensator (BCD). The diver’s main cylinder contains the majority of their breathing supply, which is delivered via a primary regulator. A spare regulator or octopus is usually carried to provide a source of air to the buddy, or in the case of a problem with the main regulator.
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Among other things, these dives offered the challenge of testing ourselves against narcosis, which we viewed as an obstacle to be overcome, so that we could be “good deep divers”.
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At the same time, we had to observe the rules set forth by the Spéléo Secours Français—the French Cave Diving Association. We set up a trimix dive, with nitrox decompression and oxygen.
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