Hello Olivier, In the few times that I met you I was impressed by your calm demeanor and open attitude. I am sure that you are a very nice gentleman. These comments are not really befitting your normally reserved attitude. To be sure, you were a pioneer in your own right. Given my own careful acceptance of rebreathers and my understanding of the demanding nature of long range cave dives I congratulate you on your sheer bravery if on nothing else. I must, however, take brief issue with your assertion that using dual rebreathers is an idea unto yourself. That is a bit like saying that using two scooters is our exclusive domain or that using more than one stage bottle was "invented". Some things are inherently obvious such as the idea that where one rebreather will work, two can be used for redundancy. The debate over the desirability of such choices is another issue altogether but the reality of the option seems self evident. Consider if the idea would hold up as patentable ie "novel and unique and not intuitively obvious to someone skilled in the trade." As for double breathers I would consider them but not likely as a complete elimination of the benefit for team effort. In the same way that we resisted rebreathers until a time that we considered useful/necessary we will not rush to using dual rebreathers where single units and teamwork are safer and more reliable options. I prefer to take my risks in other areas, betting my life on ability and the most limited number of uncontrolled variables feasible. Most people say that the team approach does not work, that they do not have a team, and that it is not good for their area. Of course they said the same thing before we built a team and explored Tallahassee. They told me the same when I went to Turkey, mounting several substantial exploration projects in the absolute middle of nowhere. They say this everywhere and will continue where the effort seems not worth the reward. I disagree and will use all the tools available toward doing this for as long as possible in the most reliable manner feasible. All my best, JJ At 09:34 PM 10/8/2001 +0200, isler wrote: >The dive of Reinhard and Michael is reported with a lot of details on the >attractive website www.tekdyk/doux. >Unfortunately, an error appears at the "Welcome" page of the site. The >assertion that "... all dives were directed using the DIR philosophy >developped by the floridian cave diving team WKPP..." is NOT correct. In >fact, the dive was directed using an intermediate philosophy between that >of DIR and the rebreather redundancy developped by myself (as mentioned on >the site). > >The analysis of their dive in fact shows that they both carried 2 X 20 l >tanks on their back (return on open circuit in case of rebreather >failure). They dived as 2 divers together, as in DIR philosophy. Beyond a >distance of 800 m, no safety or relay cylinders were placed in the sump. >The reason was that both divers used the double rebreather RB 80. This is >undeniably my philosophy of using Redundant Rebreathers. Jarrod Jablonski CEO- Halcyon Manufacturing President- Global Underwater Explorers Halcyon Manufacturing www.halcyon.net Halcyon manufacturing produces some of the scuba industry's most novel and robust diving equipment designed by many of diving's most active explorers. From the world record Halcyon rebreather to revolutionary lighting and life support equipment our companies are revolutionizing the manufacturing of aquatic equipment. Global Underwater Explorers www.gue.com Global Underwater Explorers is a non-profit educational, research, and exploratory organization. GUE regularly engages in international expeditions and has hundreds of dedicated members around the world. From entry level technical diver training to advanced exploratory, research and filming projects GUE is widely considered one of the world's most diverse and capable aquatic organizations.
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