We all know what the weight of water is. If you can imagine A column of water 80,100,150 or even 1,000 feet tall, that is serious pressure. After the first qualification, a diver is limited to 60 feet or less. The maximum "safe" depth for a recreational dive is 130 feet. This is 4 times sea level pressure and small mistake result in big problems. Technical divers (advanced recreational divers) dive to 300 + feet using different mixtures of gasses which require a lot of highly technical training. Air sales are limited to qualified divers. The compressors are very expensive and are constantly tested for purity, especially for oil and CO. A small amount of CO is big trouble at depth. A few years ago, a couple of California teens bought some scuba gear at a flea market, and went out diving on their boat. They went down to 420 feet. One made it back up only because he ran out of air on the way down. (They tried to fill their tanks at the gas station. I often wonder if there's a sea kayaking equivalent? cya *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.gasp-seakayak.net/paddlewise/ ***************************************************************************Received on Wed Dec 16 1998 - 11:34:40 PST
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