Tuesday, January 3, 2017
Open Water Scuba Diving Presentation: Tanks and Proper Weighting (part 2)
#scuba #scubadiving #tanks #cylinders #properweighting #jcaelitescuba #steel #aluminum #buoyancycharacteristics PART 2 STEEL OR ALUMINUM Now that I've fully confused you and you want to start golfing lets talk about the buoyancy characteristics of tanks in general. The following are the typical buoyancy characteristics however if you have Catalina Faber Luxfer or Worthington these numbers may vary slightly from each other. You'll find a link in the description that includes data on many of the others mentioned above. If you would like to see a breakdown of the buoyancy change of an aluminum cylinder I created a chart for every psi. I didn't create a chart for the steel as they are always negative. All you have to do to find the buoyancy is just scroll down or page down until you see the number you're looking for. So why does this matter? If an instructor gets out of the water with their student prior to a change of buoyancy from negative to positive then not very much. As an independent diver though a diver that is trying to get the most out of their cylinder it can make a pretty significant difference. Perfect weighting was usually done by telling the diver to put weight on and let all the air out of their BCD. With a moderate amount of air in one's lungs the middle of their mask should be at the water line. When the diver takes a breath their mask should rise to be out of the water while when they exhale their mask would be below the water line and they should SLOWLY start to descend. With this technique you can see how needing to ditch all of one's weight at the surface is not the life or death struggle it may have been made out to be and if it's not as much of an extreme as it looks like. Please LIKE and SUBSCRIBE. Thank you very much! JCA Elite Scuba https://jcaelitescuba.com Facebook https://www.facebook.com/jcaelitescuba/ Blogger http://blog.jcaelitescuba.com/ Google + https://plus.google.com/1029910955961... Twitter https://twitter.com/jcaelitescuba Instagram https://instagram.com/jcaelitescuba/ Patreon https://www.patreon.com/jcaelitescuba
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