{"id":5058,"date":"2025-01-08T12:49:19","date_gmt":"2025-01-08T04:49:19","guid":{"rendered":"http:\/\/scubatechphilippines.com\/scuba_blog\/?p=5058"},"modified":"2025-01-08T12:49:19","modified_gmt":"2025-01-08T04:49:19","slug":"scuba-world-depth-records-science-technology","status":"publish","type":"post","link":"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-world-depth-records-science-technology\/","title":{"rendered":"Scuba World Depth Records &#8211; Science versus the Human Factor"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">Scuba World Depth Records<\/h1>\n\n\n\n<p><strong>Perspective on the future of scuba world depth records; the issue of human physiology versus the scientific &amp; technological limitations on extreme diving depth.&nbsp;<\/strong><\/p>\n\n\n\n<p>The way I see it, there are two types of serious world records; those primarily dependent on human factors and those primarily dependent on science\/technological factors.<\/p>\n\n\n\n<p>&#8211; Breaking an automotive land-speed record is primarily dependent on scientific\/technological factors.<\/p>\n\n\n\n<p>&#8211; Breaking a 100m sprint record is primarily dependent on human factors. So are apnea diving records.<\/p>\n\n\n\n<p>Most people tend to assume that breaking a world scuba depth record will also be primarily about human factors. That is naive of diving science and history.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">Article Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-world-depth-records-science-technology\/#Verified-Scuba-Diving-World-Depth-Records\" >Verified Scuba Diving World Depth Records<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-world-depth-records-science-technology\/#Scuba-world-depth-records-Physiology\" >Scuba world depth records Physiology<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-world-depth-records-science-technology\/#The-deepest-commercial-diving-depths\" >The deepest commercial diving depths&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-world-depth-records-science-technology\/#Scuba-world-depth-records-the-issue-of-descent-speeds\" >Scuba world depth records the issue of descent speeds<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-world-depth-records-science-technology\/#Scuba-world-depth-records-bounce-diving\" >Scuba world depth records bounce diving<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-world-depth-records-science-technology\/#About-The-Author\" >About The Author<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-world-depth-records-science-technology\/#Purchase-my-exclusive-diving-ebooks\" >Purchase my exclusive diving ebooks!<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Verified-Scuba-Diving-World-Depth-Records\"><\/span>Verified Scuba Diving World Depth Records<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1989: Sheck Exley &#8211; 264 metres (866 ft)<\/li>\n\n\n\n<li>1994: Jim Bowden &#8211; 282 metres (925 ft)<\/li>\n\n\n\n<li>1996: Nuno Gomes &#8211; 283 metres (928 ft)<\/li>\n\n\n\n<li>2001: John Bennett &#8211; 308 metres (1,010 ft)<\/li>\n\n\n\n<li>2003: Mark Ellyatt &#8211; 313 metres (1,027 ft)<\/li>\n\n\n\n<li>2005: Nuno Gomes &#8211; 318 metres (1,043 ft) <\/li>\n\n\n\n<li>2014: Ahmed Gabr &#8211; 332 metres (1,090 ft)<\/li>\n<\/ul>\n\n\n\n<div class=\"scuba-b4-h2-2\" style=\"margin-top: 10px;margin-bottom: 10px;\" id=\"scuba-3281326802\"><div class=\"scuba-adlabel\">Sponsored Link<\/div><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-9354033900485448\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-9354033900485448\" \ndata-ad-slot=\"2393012471\" \ndata-ad-format=\"auto\" data-full-width-responsive=\"false\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Scuba-world-depth-records-Physiology\"><\/span>Scuba world depth records: Physiology<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Exceptional physical endurance, fitness and courage are obviously prerequisites, but they are not the <em>determining<\/em> human factors on whether a human can dive to extreme depths. The limiting human factors concern extreme-depth hyperbaric physiology. Whether an individual was somehow more resistant \/ less affected by hyperbaric maladies like HPNS (<a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/high-pressure-nervous-syndrome-hpns\/\">high-pressure nervous syndrome<\/a>) and <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/compression-arthralgia\/\">compression arthralgia<\/a>. Basically, some &#8216;X-Men&#8217; like deviations from the genetics and physiology of the human race.<\/p>\n\n\n\n<p><strong>For more information on extreme-depth hyperbaric maladies read:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/compression-arthralgia\/\"><strong>Deep Diving Maladies &#8211; Compression Arthralgia<\/strong><\/a><\/li>\n\n\n\n<li><a title=\"High Pressure Nervous Syndrome\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/high-pressure-nervous-syndrome-hpns\/\" rel=\"noopener\"><strong>Deep Diving Maladies &#8211; High-Pressure Nervous Syndrome<\/strong><\/a><\/li>\n<\/ul>\n\n\n\n<p>The rest of the key determining factors for extreme depth dives are purely scientific and technological; better equipment, better <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/understanding-m-values-eric-baker\/\">decompression<\/a> modelling, better gas selection and more accurate blending, better exposure protection from the cold,&#8230;etc etc etc.<\/p>\n\n\n\n<p>To be strictly accurate, the necessary science and technology for diving to extreme depths have <em>already<\/em> existed for decades. Hence, the considerably deeper depths are already attained by surface-supplied (commercial) divers.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The-deepest-commercial-diving-depths\"><\/span>The deepest commercial diving depths&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The company COMEX set the deepest saturation dive record in 1988; when a team of divers (Th. Arnold, S. Icart, J.G. Marcel Auda, R. Peilho, P. Raude, L. Schneider) conducted undersea pipeline work at depth of 534m (1752ft).<\/p>\n\n\n\n<p>The science of extreme depth physiology and decompression was bench-marked in 1992 when\u00a0Theodoros Mavrostomos achieved a depth of 701m \/ 2300ft on a &#8216;dry&#8217; dive inside a hyperbaric chamber. It took a total of 43 days to complete the dive, using a hydrogen\u2013helium\u2013oxygen gas mixture.<\/p>\n\n\n\n<p>Translating those proven approaches from surface-supplied diving to scuba (self-contained) diving remains the single biggest issue facing future world record aspirants.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Scuba-world-depth-records-the-issue-of-descent-speeds\"><\/span>Scuba world depth records: the issue of descent speeds<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>To date, the human factor of hyperbaric physiology remains the limiting issue on all world depth record attempts using&nbsp;<em><strong>scuba<\/strong>&nbsp;<\/em>thus far. That is primarily because of the fast descents employed.&nbsp;Surface-supplied (commercial) divers minimize the onset of HPNS and compression arthralgia by employing very slow descents (circa 1m per minute). Scuba divers do not.<\/p>\n\n\n\n<p>Science has illustrated a solution for deeper scuba dives &#8211; very slow descents. The current world scuba depth record holder, Ahmed Gabr took only 12 minutes to a depth of &nbsp;332.4m. &nbsp;That&#8217;s a <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/diving-descent-speed-co2-narcosis-gas-density\/\">descent speed<\/a> of 27.7m per minute; nearly 30x faster than commercial extreme-deep divers compress at.<\/p>\n\n\n\n<p>Thus far,\u00a0no scuba world record aspirant has opted to employ the slower <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/best-technical-diving-computer\/\">descent<\/a> speeds proven effective in commercial diving. Why not? \u00a0I&#8217;d hazard a guess it is only because of the vast logistics, cost and physical endurance necessary to complete\u00a0both\u00a0a very slow\u00a0descent\u00a0and a very slow\u00a0<em>ascent<\/em>\u00a0from extreme depth. <\/p>\n\n\n\n<p>It would more than double the financial cost, require a much more complex support plan and demand a world record aspirant capable of withstanding significantly longer periods of exposure underwater at great depth.<\/p>\n\n\n\n<p>Commercial divers ascend and descend using diving bells. During this time they are resting and protected from the extremes of temperature and immersion.\u00a0When exiting the diving bell at depth, a commercial diver benefits from a hot-water heated suit. In contrast, a scuba diver would have to deal with the extreme cold and would enjoy no true rest period for the duration of the dive.<\/p>\n\n\n\n<div class=\"scuba-b4-h2-3\" style=\"margin-top: 10px;margin-bottom: 10px;\" id=\"scuba-636916423\"><div class=\"scuba-adlabel\">Sponsored Link<\/div><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-9354033900485448\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-9354033900485448\" \ndata-ad-slot=\"6151212517\" \ndata-ad-format=\"auto\" data-full-width-responsive=\"false\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Scuba-world-depth-records-bounce-diving\"><\/span>Scuba world depth records: bounce diving<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>&#8220;Bounce&#8217; dive attempts (plummet and pray) minimize the time that the diver spends at depth. The majority of the dive is spent decompressing in relatively shallow, warmer, water.\u00a0To greatly extended descent times; and we are talking an extension from 12 minutes to 6-7 hours, would probably not be survivable using even the most cutting-edge <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/choosing-diving-suits\/\">drysuits<\/a> and self-contained suit heating systems (even if such systems could survive\/operate at the depths considered).<\/p>\n\n\n\n<p>If further scuba world depth record attempts remain focused on &#8216;conquering the human factor&#8217;, rather than finding a means to apply or expand known science, then I believe they are flawed.\u00a0I will reconsider that belief on the occasion that a diver is proven to have sufficient genetic deviation to be reasonably immune to extreme-depth hyperbaric physiological maladies.<\/p>\n\n\n\n<p>Until then, I would have the utmost respect for any diver, or team, who actually tried to employ, on scuba, the known diving science that has already enabled surface-supplied excursions to vastly greater depths. \u00a0<\/p>\n\n\n\n<p>The quest is for technological answers to the issue of providing diver-portable,\u00a0self-contained, life-support for sustained periods under extreme hyperbaric and temperature conditions. There is also vast scope for research into staged descent profiles; the science of compression, not just decompression. \u00a0That, without a doubt, would be a truly epic feat of human endurance, engineering and scientific progress.<\/p>\n\n\n\n<p>At this time, I am a firm believer that progressing the scuba world depth record is a matter of known science\/technology, not the human factor. &#8216;<em>Plummet and pray<\/em>&#8216; is the antithesis solution. Nobody wants to commit to making a 6-7 hour descent yet.<\/p>\n\n\n\n<p class=\"has-everlasting-sky-gradient-background has-background\">Scuba world depth records always catch the public&#8217;s attention. What is your opinion on these attempts? Write a comment at the bottom of this post!<\/p>\n\n\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-content-justification-center is-layout-constrained wp-block-column-is-layout-constrained\" style=\"flex-basis:25%\">\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-medium is-resized is-style-default\"><a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/andy-davis-technical-diving\/\"><img decoding=\"async\" width=\"300\" height=\"296\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2018\/03\/Cartoon-Andy-900x900-1-300x296.png\" alt=\"Andy Davis Technical Sidemount Wreck Diving Subic Bay Philippines RAID Courses Training\" class=\"wp-image-6812\" style=\"width:225px;height:222px\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2018\/03\/Cartoon-Andy-900x900-1-300x296.png 300w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2018\/03\/Cartoon-Andy-900x900-1-1024x1009.png 1024w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2018\/03\/Cartoon-Andy-900x900-1-768x757.png 768w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2018\/03\/Cartoon-Andy-900x900-1.png 1280w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-constrained wp-block-column-is-layout-constrained\" style=\"flex-basis:75%\">\n<h2 class=\"wp-block-heading has-text-align-center\"><span class=\"ez-toc-section\" id=\"About-The-Author\"><\/span>About The Author<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><a href=\"https:\/\/buymeacoffee.com\/andydavistech\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"274\" height=\"77\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2022\/12\/bmc-button-1-1.png\" alt=\"\" class=\"wp-image-27046\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2022\/12\/bmc-button-1-1.png 274w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2022\/12\/bmc-button-1-1-250x70.png 250w\" sizes=\"(max-width: 274px) 100vw, 274px\" \/><\/a><\/figure>\n\n\n\n<p><a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/andy-davis-technical-diving\/\">Andy Davis<\/a> is a <a href=\"https:\/\/scubatechphilippines.com\/raid-diving-courses-philippines\/raid\/\">RAID<\/a>, PADI TecRec, ANDI, BSAC, and SSI-qualified independent <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/what-is-technical-diving\/\">technical diving<\/a> instructor who specializes in teaching <a href=\"https:\/\/scubatechphilippines.com\/sidemount-courses\/\">sidemount<\/a>, <a href=\"https:\/\/scubatechphilippines.com\/technical-diving-courses\/\">trimix<\/a>, and <a href=\"https:\/\/scubatechphilippines.com\/technical-diving-courses\/\">advanced wreck<\/a> diving courses.<\/p>\n<\/div>\n<\/div>\n\n\n\n<p>Currently residing in <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/subic-bay-wreck-diving-sites\/\">Subic Bay, Philippines<\/a>; he has amassed more than 10,000 open-circuit and CCR dives over three decades of challenging diving across the globe.<\/p>\n\n\n\n<p><a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/andy-davis-technical-diving\/\">Andy<\/a> has published numerous diving magazine articles and designed advanced certification courses for several dive training agencies, He regularly tests and reviews new dive gear for scuba equipment manufacturers. Andy is currently writing a series of <a href=\"https:\/\/www.buymeacoffee.com\/andydavistech\/extras\">advanced diving books <\/a>and creating a range of <a href=\"https:\/\/www.redbubble.com\/people\/andydavistech\/shop\">tech diving clothing and accessories<\/a>.<\/p>\n\n\n\n<p>Prior to becoming a professional technical diving educator in 2006, Andy was a commissioned officer in the Royal Air Force and has served in Iraq, Afghanistan, Belize, and Cyprus.<\/p>\n\n\n\n<p>In 2023, Andy was named in the &#8220;<a rel=\"noreferrer noopener\" href=\"https:\/\/gue.com\/blog\/sidemount-andy-davies\/\" target=\"_blank\">Who&#8217;s Who of Sidemount<\/a>&#8221; list by GUE InDepth Magazine.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center has-palette-color-7-color has-vivid-red-background-color has-text-color has-background has-link-color wp-elements-dd81a6de961563c5bf17302e4376cbd2\"><span class=\"ez-toc-section\" id=\"Purchase-my-exclusive-diving-ebooks\"><\/span>Purchase my exclusive diving ebooks!<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-columns is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/buymeacoffee.com\/andydavistech\/e\/233191\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"652\" height=\"1024\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/03\/Gas-Management-Book-Cover-Image-652x1024.jpg\" alt=\"Gas Management For Scuba Divers Book\" class=\"wp-image-26264\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/03\/Gas-Management-Book-Cover-Image-652x1024.jpg 652w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/03\/Gas-Management-Book-Cover-Image-191x300.jpg 191w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/03\/Gas-Management-Book-Cover-Image-768x1206.jpg 768w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/03\/Gas-Management-Book-Cover-Image-96x150.jpg 96w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/03\/Gas-Management-Book-Cover-Image.jpg 794w\" sizes=\"(max-width: 652px) 100vw, 652px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/buymeacoffee.com\/andydavistech\/e\/233171\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"652\" height=\"1024\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook-652x1024.jpg\" alt=\"Become A Shearwater Power User Book\" class=\"wp-image-26382\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook-652x1024.jpg 652w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook-191x300.jpg 191w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook-768x1206.jpg 768w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook-978x1536.jpg 978w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook-95x150.jpg 95w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/Shearwater-Gradient-Factors-ebook.jpg 1200w\" sizes=\"(max-width: 652px) 100vw, 652px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/buymeacoffee.com\/andydavistech\/e\/111242\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"652\" height=\"1024\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/COVER-IMAGE-652x1024.jpg\" alt=\"\" class=\"wp-image-26656\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/COVER-IMAGE-652x1024.jpg 652w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/COVER-IMAGE-191x300.jpg 191w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/COVER-IMAGE-768x1206.jpg 768w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/COVER-IMAGE-96x150.jpg 96w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/COVER-IMAGE.jpg 794w\" sizes=\"(max-width: 652px) 100vw, 652px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/buymeacoffee.com\/andydavistech\/e\/262907\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"652\" height=\"1024\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/07\/BPW-Book-Cover-Image-652x1024.jpg\" alt=\"A Comprehensive Guide to Backplate &amp; Wing BCDs\" class=\"wp-image-26808\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/07\/BPW-Book-Cover-Image-652x1024.jpg 652w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/07\/BPW-Book-Cover-Image-191x300.jpg 191w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/07\/BPW-Book-Cover-Image-768x1206.jpg 768w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/07\/BPW-Book-Cover-Image-96x150.jpg 96w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/07\/BPW-Book-Cover-Image.jpg 794w\" sizes=\"(max-width: 652px) 100vw, 652px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/buymeacoffee.com\/andydavistech\/e\/260377\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"652\" height=\"1024\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/The-Path-To-Proficiency-Book-Cover-Image-652x1024.jpg\" alt=\"Diving Psychology The Path to Proficiency: Mental Strategies for Scuba Divers (eBook)\" class=\"wp-image-26633\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/The-Path-To-Proficiency-Book-Cover-Image-652x1024.jpg 652w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/The-Path-To-Proficiency-Book-Cover-Image-191x300.jpg 191w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/The-Path-To-Proficiency-Book-Cover-Image-768x1206.jpg 768w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/The-Path-To-Proficiency-Book-Cover-Image-96x150.jpg 96w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2024\/05\/The-Path-To-Proficiency-Book-Cover-Image.jpg 794w\" sizes=\"(max-width: 652px) 100vw, 652px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n<p id=\"rop\"><small>Originally posted 2016-02-19 16:29:25. <\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>Perspective on scuba world depth records: human physiology versus the limitations of diving science and technology.<\/p>\n","protected":false},"author":2,"featured_media":18944,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[604],"tags":[638,197,637,365,5,67,571,634],"class_list":["post-5058","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical_diving_articles","tag-compression-arthralgia","tag-decompression","tag-high-pressure-neurological-syndrome-hpns","tag-hyperbaric-medicine","tag-scuba-diving-advice-and-tips","tag-scuba-diving-depth","tag-scuba-diving-world-record","tag-wael-omar"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Scuba World Depth Records - Science versus the Human Factor - Andy Davis Sidemount 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