COL Private RallyPoint Member 1057448 <div class="images-v2-count-3"><div class="content-picture image-v2-number-1" id="image-64925"> <div class="social_icons social-buttons-on-image"> <a href='https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.rallypoint.com%2Fanswers%2Fwhat-is-the-total-number-of-atmospheres-of-pressure-on-a-scuba-diver-standing-zero-buoyancy-in-30-meters-99-feet-of-water%3Futm_source%3DFacebook%26utm_medium%3Dorganic%26utm_campaign%3DShare%20to%20facebook' target="_blank" class='social-share-button facebook-share-button'><i class="fa fa-facebook-f"></i></a> <a href="https://twitter.com/intent/tweet?text=What+is+the+total+number+of+atmospheres+of+pressure+on+a+scuba+diver+standing+zero+buoyancy+in+30+meters+%2F+99+feet+of+water%3F&amp;url=https%3A%2F%2Fwww.rallypoint.com%2Fanswers%2Fwhat-is-the-total-number-of-atmospheres-of-pressure-on-a-scuba-diver-standing-zero-buoyancy-in-30-meters-99-feet-of-water&amp;via=RallyPoint" target="_blank" class="social-share-button twitter-custom-share-button"><i class="fa fa-twitter"></i></a> <a href="mailto:?subject=Check this out on RallyPoint!&body=Hi, I thought you would find this interesting:%0D%0AWhat is the total number of atmospheres of pressure on a scuba diver standing zero buoyancy in 30 meters / 99 feet of water?%0D%0A %0D%0AHere is the link: https://www.rallypoint.com/answers/what-is-the-total-number-of-atmospheres-of-pressure-on-a-scuba-diver-standing-zero-buoyancy-in-30-meters-99-feet-of-water" target="_blank" class="social-share-button email-share-button"><i class="fa fa-envelope"></i></a> </div> <a class="fancybox" rel="196563f58697426f9a0a3795a892f67b" href="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/925/for_gallery_v2/8e6b05c.jpeg"><img src="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/925/large_v3/8e6b05c.jpeg" alt="8e6b05c" /></a></div><div class="content-picture image-v2-number-2" id="image-64926"><a class="fancybox" rel="196563f58697426f9a0a3795a892f67b" href="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/926/for_gallery_v2/db382f8.jpeg"><img src="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/926/thumb_v2/db382f8.jpeg" alt="Db382f8" /></a></div><div class="content-picture image-v2-number-3" id="image-64927"><a class="fancybox" rel="196563f58697426f9a0a3795a892f67b" href="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/927/for_gallery_v2/7d3f9c6.jpeg"><img src="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/927/thumb_v2/7d3f9c6.jpeg" alt="7d3f9c6" /></a></div></div>The total pressure on a diver under water is the result of two separate forces which act simultaneously upon him. These are: the weight of the water and the weight of the atmosphere over the surface of the water. For fellow divers; what is the total number of atmospheres of pressure on a scuba diver standing zero buoyancy within 30 meters of water? Trivia for divers! 2015-10-22T07:16:01-04:00 COL Private RallyPoint Member 1057448

<div class="images-v2-count-3"><div class="content-picture image-v2-number-1" id="image-64925"> <div class="social_icons social-buttons-on-image"> <a href='https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.rallypoint.com%2Fanswers%2Fwhat-is-the-total-number-of-atmospheres-of-pressure-on-a-scuba-diver-standing-zero-buoyancy-in-30-meters-99-feet-of-water%3Futm_source%3DFacebook%26utm_medium%3Dorganic%26utm_campaign%3DShare%20to%20facebook' target="_blank" class='social-share-button facebook-share-button'><i class="fa fa-facebook-f"></i></a> <a href="https://twitter.com/intent/tweet?text=What+is+the+total+number+of+atmospheres+of+pressure+on+a+scuba+diver+standing+zero+buoyancy+in+30+meters+%2F+99+feet+of+water%3F&amp;url=https%3A%2F%2Fwww.rallypoint.com%2Fanswers%2Fwhat-is-the-total-number-of-atmospheres-of-pressure-on-a-scuba-diver-standing-zero-buoyancy-in-30-meters-99-feet-of-water&amp;via=RallyPoint" target="_blank" class="social-share-button twitter-custom-share-button"><i class="fa fa-twitter"></i></a> <a href="mailto:?subject=Check this out on RallyPoint!&body=Hi, I thought you would find this interesting:%0D%0AWhat is the total number of atmospheres of pressure on a scuba diver standing zero buoyancy in 30 meters / 99 feet of water?%0D%0A %0D%0AHere is the link: https://www.rallypoint.com/answers/what-is-the-total-number-of-atmospheres-of-pressure-on-a-scuba-diver-standing-zero-buoyancy-in-30-meters-99-feet-of-water" target="_blank" class="social-share-button email-share-button"><i class="fa fa-envelope"></i></a> </div> <a class="fancybox" rel="a2719060e51116e862d10078d59dfac8" href="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/925/for_gallery_v2/8e6b05c.jpeg"><img src="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/925/large_v3/8e6b05c.jpeg" alt="8e6b05c" /></a></div><div class="content-picture image-v2-number-2" id="image-64926"><a class="fancybox" rel="a2719060e51116e862d10078d59dfac8" href="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/926/for_gallery_v2/db382f8.jpeg"><img src="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/926/thumb_v2/db382f8.jpeg" alt="Db382f8" /></a></div><div class="content-picture image-v2-number-3" id="image-64927"><a class="fancybox" rel="a2719060e51116e862d10078d59dfac8" href="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/927/for_gallery_v2/7d3f9c6.jpeg"><img src="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/927/thumb_v2/7d3f9c6.jpeg" alt="7d3f9c6" /></a></div></div>The total pressure on a diver under water is the result of two separate forces which act simultaneously upon him. These are: the weight of the water and the weight of the atmosphere over the surface of the water. For fellow divers; what is the total number of atmospheres of pressure on a scuba diver standing zero buoyancy within 30 meters of water? Trivia for divers!

2015-10-22T07:16:01-04:00 2015-10-22T07:16:01-04:00 LTC Private RallyPoint Member 1057552

<div class="images-v2-count-0"></div>my gut says 1, but would have to dig into the old manuals before I'd wager on it.

2015-10-22T08:19:12-04:00 2015-10-22T08:19:12-04:00 SPC David S. 1057680

<div class="images-v2-count-0"></div>At sea level its 14.7 x 3 (1 ATA for every 10 meters) + 14.7 (1 ATM for the air above) = 58.8lbs or 4 ATA

2015-10-22T09:34:18-04:00 2015-10-22T09:34:18-04:00 Cpl Joshua Wehrman 1057781

<div class="images-v2-count-1"><div class="content-picture image-v2-number-1" id="image-64951"> <div class="social_icons social-buttons-on-image"> <a href='https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.rallypoint.com%2Fanswers%2Fwhat-is-the-total-number-of-atmospheres-of-pressure-on-a-scuba-diver-standing-zero-buoyancy-in-30-meters-99-feet-of-water%3Futm_source%3DFacebook%26utm_medium%3Dorganic%26utm_campaign%3DShare%20to%20facebook' target="_blank" class='social-share-button facebook-share-button'><i class="fa fa-facebook-f"></i></a> <a href="https://twitter.com/intent/tweet?text=What+is+the+total+number+of+atmospheres+of+pressure+on+a+scuba+diver+standing+zero+buoyancy+in+30+meters+%2F+99+feet+of+water%3F&amp;url=https%3A%2F%2Fwww.rallypoint.com%2Fanswers%2Fwhat-is-the-total-number-of-atmospheres-of-pressure-on-a-scuba-diver-standing-zero-buoyancy-in-30-meters-99-feet-of-water&amp;via=RallyPoint" target="_blank" class="social-share-button twitter-custom-share-button"><i class="fa fa-twitter"></i></a> <a href="mailto:?subject=Check this out on RallyPoint!&body=Hi, I thought you would find this interesting:%0D%0AWhat is the total number of atmospheres of pressure on a scuba diver standing zero buoyancy in 30 meters / 99 feet of water?%0D%0A %0D%0AHere is the link: https://www.rallypoint.com/answers/what-is-the-total-number-of-atmospheres-of-pressure-on-a-scuba-diver-standing-zero-buoyancy-in-30-meters-99-feet-of-water" target="_blank" class="social-share-button email-share-button"><i class="fa fa-envelope"></i></a> </div> <a class="fancybox" rel="773c25cf069593dba6eecb6fc4e58b9b" href="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/951/for_gallery_v2/1f0cd8d3.jpg"><img src="https://d1ndsj6b8hkqu9.cloudfront.net/pictures/images/000/064/951/large_v3/1f0cd8d3.jpg" alt="1f0cd8d3" /></a></div></div>4 ata. 1 atmosphere for every 33ft plus the 1 atmosphere you have from the weight of the air at sea level. I knew this off the top of my head but here is a good cheat sheet

2015-10-22T10:20:00-04:00 2015-10-22T10:20:00-04:00 SGT Richard H. 1058169

<div class="images-v2-count-0"></div>Not really trivia, but a good question that every diver should know. <br />(Depth/33)+1=ATA<br />(99/3)+1=4 ATA

2015-10-22T12:37:14-04:00 2015-10-22T12:37:14-04:00 SPC Lisa Rudikoff 1058828

<div class="images-v2-count-0"></div>Divide by 33 as every 33' you descend adds one, don't forget one at the surface...so 99/33 + 1...

2015-10-22T15:53:35-04:00 2015-10-22T15:53:35-04:00 SSG Bradley Peterson 1177145

<div class="images-v2-count-0"></div>4 +- depending on the math one does

2015-12-15T12:32:11-05:00 2015-12-15T12:32:11-05:00 SSG Bradley Peterson 1177179

<div class="images-v2-count-0"></div>OK So the obvious follow on would be, What is our best mix? Air NOAA I NOAA II. What is the PPO2 of each mix?

2015-12-15T12:41:16-05:00 2015-12-15T12:41:16-05:00 SFC Jonathan Bensman 1534252

<div class="images-v2-count-0"></div>4 ata

2016-05-16T17:46:35-04:00 2016-05-16T17:46:35-04:00 LTC Private RallyPoint Member 4332899

<div class="images-v2-count-0"></div>The buoyancy has nothing to do with it. A diver at a depth of 99 feet in salt water has 4 ata, or roughly 60 psi, pressing on them. In fresh water it would be 3.9 ata, or roughly 58 psi.

2019-01-31T22:52:41-05:00 2019-01-31T22:52:41-05:00 SPC Robert Coventry 4407701

<div class="images-v2-count-0"></div>4 I believe

2019-02-28T05:02:45-05:00 2019-02-28T05:02:45-05:00 CMSgt Dave Clark 4997509

<div class="images-v2-count-0"></div>3.983 atmospheres

2019-09-06T10:52:04-04:00 2019-09-06T10:52:04-04:00 2015-10-22T07:16:01-04:00