{"id":15162,"date":"2025-01-08T12:52:09","date_gmt":"2025-01-08T04:52:09","guid":{"rendered":"http:\/\/scubatechphilippines.com\/scuba_blog\/?p=15162"},"modified":"2025-01-08T12:52:09","modified_gmt":"2025-01-08T04:52:09","slug":"how-to-ascend-when-scuba-diving","status":"publish","type":"post","link":"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/","title":{"rendered":"How To Best Ascend When Scuba Diving?"},"content":{"rendered":"\n<h1 class=\"wp-block-heading has-text-align-center\">How To Best Ascend When Scuba Diving?<\/h1>\n\n\n\n<p>To safely ascend when scuba diving, there are three key factors to consider: <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/best-ascent-speed-scuba-diving\">ascent speed<\/a>, safety stop, and <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-buoyancy-masterclass-5of9-trim-and-position\/\">body positioning<\/a>. While novice divers learn to ascend slowly, it&#8217;s important to strike the right balance as a too-slow ascent can increase the risk of <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/types-decompression-sickness-dcs\/\" target=\"_blank\" rel=\"noreferrer noopener\">decompression sickness<\/a>. <\/p>\n\n\n\n<p>In this article, we&#8217;ll explore the <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/best-ascent-speed-scuba-diving\/\">optimal ascent rate<\/a>, the importance of conducting safety stops, and why <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-diving-trim-problems\/\">horizontal trim<\/a> is crucial for a safe and effective ascent. Read on to learn more.<\/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\/how-to-ascend-when-scuba-diving\/#10-tips-on-how-to-ascend-when-scuba-diving\" >10 tips on how to ascend when scuba diving<\/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\/how-to-ascend-when-scuba-diving\/#Ascent-speed-as-you-ascend-when-scuba-diving\" >Ascent speed as you ascend when scuba diving<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#Dont-ascend-too-slowly-from-scuba-dives\" >Don&#8217;t ascend too slowly from scuba dives<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#Very-slow-ascents-cause-more-bubbles\" >Very slow ascents cause more bubbles<\/a><\/li><\/ul><\/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\/how-to-ascend-when-scuba-diving\/#Conduct-a-safety-stop-as-you-ascend-when-scuba-diving\" >Conduct a safety stop as you ascend when scuba diving<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#A-sample-safety-stop-schedule-for-enhanced-DCS-protection\" >A sample safety stop schedule for enhanced DCS protection<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#Body-positioning-during-ascent-on-a-dive\" >Body positioning during ascent on a dive<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#About-Immersion-Pulmonary-Edema\" >About Immersion Pulmonary Edema<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#Immersion-Pulmonary-Edema-causes-and-symptoms\" >Immersion Pulmonary Edema causes and symptoms<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#Immersion-Pulmonary-Edema-incidence-and-risk-factors\" >Immersion Pulmonary Edema incidence and risk factors<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#The-best-way-to-ascend-when-diving\" >The best way to ascend when diving<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#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-13\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#Purchase-my-exclusive-diving-ebooks\" >Purchase my exclusive diving ebooks!<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#Ascend-when-scuba-diving-FAQ\" >Ascend when scuba diving FAQ<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"10-tips-on-how-to-ascend-when-scuba-diving\"><\/span>10 tips on how to ascend when scuba diving<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>To safely ascend when scuba diving, consider three key factors: ascent speed, safety stop, and body positioning.<\/li>\n\n\n\n<li>Novice divers learn to ascend slowly, but a too-slow ascent can increase the risk of <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/types-decompression-sickness-dcs\/\">decompression sickness<\/a>.<\/li>\n\n\n\n<li>A very slow ascent promotes continued on-gasing, delaying reaching an optimal super-saturation gradient.<\/li>\n\n\n\n<li><a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/best-ascent-speed-scuba-diving\/\">Ascent rate<\/a> of 9-10m per minute with one or more stops at shallow depth is optimal.<\/li>\n\n\n\n<li>Multiple level safety stops stimulate fewer bubbles than either no stop or a single stop.<\/li>\n\n\n\n<li>Mainstream recreational agencies like PADI teach a 3-minute safety stop protocol at 5m depth.<\/li>\n\n\n\n<li>Advanced-level divers and some other agencies may favor multiple safety stops at depths of 9, 6, and 3m.<\/li>\n\n\n\n<li>Vertical body positioning creates inconsistent inert-gas diffusion and can contribute to <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/immersion-pulmonary-edema-oedema-ipe-ipo\/\">Immersion Pulmonary Edema<\/a> (IPE).<\/li>\n\n\n\n<li>Horizontal body positioning is far more optimal throughout the ascent and safety stops.<\/li>\n\n\n\n<li>Divers need <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/diving-buoyancy-control-tips\/\">buoyancy control<\/a> and <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-diving-trim-problems\/\">trim proficiency<\/a> to perform a <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-diving-techniques-hover\/\">horizontal trim ascent<\/a>.<\/li>\n<\/ol>\n\n\n\n<div class=\"scuba-b4-h2-2\" style=\"margin-top: 10px;margin-bottom: 10px;\" id=\"scuba-334340408\"><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=\"Ascent-speed-as-you-ascend-when-scuba-diving\"><\/span>Ascent speed as you ascend when scuba diving<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Novice scuba divers learn to ascend very slowly from depth. This is an appropriately simplistic \u2018rule&#8217; that helps them avoid an uncontrolled ascent. However, it is not the correct approach to ensure safety from <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/understanding-m-values-eric-baker\/\">decompression<\/a> illness (DCI).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dont-ascend-too-slowly-from-scuba-dives\"><\/span>Don&#8217;t ascend too slowly from scuba dives<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>There is ample <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/best-ascent-speed-scuba-diving\/\">scientific evidence that a too-slow ascent can also be problematic<\/a> in relation to elevating the risk of decompression sickness.<\/p>\n\n\n\n<p>This is because a very slow ascent promotes continued on-gasing (<em>absorption of inert gas<\/em>) into the slower body tissues. As a result, there is delay in reaching a depth where an optimal super-saturation gradient promotes faster removal of nitrogen from the body.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Very-slow-ascents-cause-more-bubbles\"><\/span>Very slow ascents cause more bubbles<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>When studied, an ascent rate of <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/best-ascent-speed-scuba-diving\/#The-best-ascent-speed-for-scuba-diving\">9m per min produced <strong><em>fewer<\/em><\/strong> bubbles<\/a> than a slower ascent of 3m per min.<\/p>\n\n\n\n<p>As such, the optimal approach to ascending is to maintain an accurate ascent rate of 9-10m per minute, combined with one or more stops at shallow depth.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conduct-a-safety-stop-as-you-ascend-when-scuba-diving\"><\/span>Conduct a safety stop as you ascend when scuba diving<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Mainstream recreational agencies like PADI teach a simplistic \u201csafety&#8221; stop protocol of 3 minutes at 5m depth. Some other agencies, and more advanced-level divers, favour an approach doing multiple levels of safety stop; for instance, at depths of 9, 6 and 3m.<\/p>\n\n\n\n<p>Again, the approach of using <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-buoyancy-masterclass-7of9-ascent-descent-and-at-the-bottom\/\">multiple level safety stops <\/a>stimulates fewer bubbles than either no stop whatsoever or a single stop.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"A-sample-safety-stop-schedule-for-enhanced-DCS-protection\"><\/span>A sample safety stop schedule for enhanced DCS protection<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ascend at a rate of 9m (30ft) per minute.<\/li>\n\n\n\n<li>Stop at 9m (30ft) for 1 minute<\/li>\n\n\n\n<li>Stop at 6m (20ft) for 2 minutes<\/li>\n\n\n\n<li>Stop at 3m (10ft) for 3 minutes<\/li>\n\n\n\n<li>Ascend to the surface at a rate of 3m (10ft) per minute<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Body-positioning-during-ascent-on-a-dive\"><\/span>Body positioning during ascent on a dive<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Another factor is body positioning on the ascent. If the diver is vertical in the water, then they create a significant pressure differential across the height of their body. This has two downsides:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Firstly, it means that <strong>inert-gas diffusion is inconsistent<\/strong> across the length of their body.<\/li>\n\n\n\n<li>Secondly, pressure differential across the body can contribute to a cause of <strong>Immersion Pulmonary Edema <\/strong>(IPE) &#8211; a malady increasingly believed to play a role in many diving accidents.<\/li>\n<\/ul>\n\n\n\n<p>For those reasons, a <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-diving-trim-problems\/\">horizontal body positioning<\/a> is far more optimal throughout the ascent and safety stops. The primary caveat being that the diver needs to possess sufficient buoyancy and trim proficiency to actually perform a horizontal ascent.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"About-Immersion-Pulmonary-Edema\"><\/span>About Immersion Pulmonary Edema<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Immersion-Pulmonary-Edema-causes-and-symptoms\"><\/span>Immersion Pulmonary Edema causes and symptoms:<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Immersion pulmonary edema (IPE) is a life-threatening condition that can occur during water immersion activities.<\/li>\n\n\n\n<li>IPE occurs when fluid from the blood leaks abnormally from the small vessels of the lung into the airspaces, leading to difficulty in breathing.<\/li>\n\n\n\n<li>IPE is not typically related to any underlying medical cause.<\/li>\n\n\n\n<li>The effects of immersion and increased cardiac filling pressures can cause IPE.<\/li>\n\n\n\n<li>Symptoms of IPE include shortness of breath, coughing, chest pain, and frothy sputum.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Immersion-Pulmonary-Edema-incidence-and-risk-factors\"><\/span>Immersion Pulmonary Edema incidence and risk factors:<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fatal cases are often mistaken for drowning, so the exact incidence of IPE is unknown.<\/li>\n\n\n\n<li>IPE tends to recur and can be fatal.<\/li>\n\n\n\n<li>It can affect surface swimmers, snorkelers, and scuba divers.<\/li>\n\n\n\n<li>The issue effects young, otherwise healthy individuals, as well as in older divers with high blood pressure.<\/li>\n<\/ul>\n\n\n\n<div class=\"scuba-b4-h2-3\" style=\"margin-top: 10px;margin-bottom: 10px;\" id=\"scuba-2225441687\"><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=\"The-best-way-to-ascend-when-diving\"><\/span>The best way to ascend when diving<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>In summary, ascending when scuba diving is a critical part of the sport, and it&#8217;s important to do it safely. By considering ascent speed, conducting safety stops, and maintaining a horizontal body position, divers can minimize their risk of decompression sickness and other diving-related illnesses. <\/p>\n\n\n\n<p>Remember to strike the right balance and maintain an ascent rate of 9-10m per minute, combined with one or more stops at shallow depths. By following these guidelines, divers can enjoy a safe and enjoyable experience exploring the underwater world.<\/p>\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 <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-equipment-shopping-buying-best-dive-gear\/\">dive gear<\/a> 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\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ascend-when-scuba-diving-FAQ\"><\/span>Ascend when scuba diving FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1682661538795\"><strong class=\"schema-faq-question\">Can scuba diving cause pulmonary edema?<\/strong> <p class=\"schema-faq-answer\">Yes, immersion pulmonary edema is known to occur on scuba dives. The exact figures are unknown because many fatal cases may be confused with drowning.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1682661559048\"><strong class=\"schema-faq-question\">Is it better to ascend in a vertical or horizontal position when scuba diving?<\/strong> <p class=\"schema-faq-answer\">It is best to ascend horizontally from a scuba dive. Beginners with poor <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/diving-buoyancy-control-tips\/\">buoyancy control<\/a> can ascend vertically as a precaution against an uncontrolled ascent.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1682661608425\"><strong class=\"schema-faq-question\">What happens when divers ascend?<\/strong> <p class=\"schema-faq-answer\">As a diver ascends, the gas in their BCD and exposure protection expands to increase their buoyancy. As a result, they must release air from their BCD to retain neutral buoyancy.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1682661628734\"><strong class=\"schema-faq-question\">Is it best to ascend slowly when scuba diving?<\/strong> <p class=\"schema-faq-answer\">Aim to ascend slowly when you are a beginner and there is risk of an uncontrolled ascent. With experience, aim to ascend at an optimal rate of 9m or 30ft per minute until you reach your safety stop.<\/p> <\/div> <\/div>\n<p id=\"rop\"><small>Originally posted 2019-02-24 16:08:01. <\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>Three important tips on how to ascend when scuba diving. Read this to increase your safety and enjoy less fatigue after your dives!<\/p>\n","protected":false},"author":2,"featured_media":22244,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1826],"tags":[14,27],"class_list":["post-15162","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to-guide-diving","tag-advanced-diving-techniques","tag-scuba-diving-ascent"],"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>How To Best Ascend When Scuba Diving? - Andy Davis Sidemount Technical Wreck Diving Blog<\/title>\n<meta name=\"description\" content=\"Three important tips on how to ascend when scuba diving. Read this to increase your safety and enjoy less fatigue after your dives!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How To Best Ascend When Scuba Diving? - Andy Davis Sidemount Technical Wreck Diving Blog\" \/>\n<meta property=\"og:description\" content=\"Three important tips on how to ascend when scuba diving. Read this to increase your safety and enjoy less fatigue after your dives!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/\" \/>\n<meta property=\"og:site_name\" content=\"Andy Davis Sidemount Technical Wreck Diving Blog\" \/>\n<meta property=\"article:publisher\" content=\"ScubaTechPhilippines\" \/>\n<meta property=\"article:author\" content=\"https:\/\/facebook.com\/ScubaTechPhilippines\" \/>\n<meta property=\"article:published_time\" content=\"2025-01-08T04:52:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2019\/08\/how-to-ascend-when-scuba-diving.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1256\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Andy Davis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DivePhilippines\" \/>\n<meta name=\"twitter:site\" content=\"@Divephilippines\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Andy Davis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/\"},\"author\":{\"name\":\"Andy Davis\",\"@id\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/#\/schema\/person\/6dd08ec4ec6a2c8ba96ad070e22893dc\"},\"headline\":\"How To Best Ascend When Scuba Diving?\",\"datePublished\":\"2025-01-08T04:52:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/\"},\"wordCount\":1053,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/#\/schema\/person\/97db30481ec4e5c92a61fdb6c818acec\"},\"image\":{\"@id\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2019\/08\/how-to-ascend-when-scuba-diving.jpg\",\"keywords\":[\"advanced diving techniques\",\"scuba diving ascent\"],\"articleSection\":[\"Diving How To Guides\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#respond\"]}]},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/\",\"url\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/\",\"name\":\"How To Best Ascend When Scuba Diving? - Andy Davis Sidemount Technical Wreck Diving Blog\",\"isPartOf\":{\"@id\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2019\/08\/how-to-ascend-when-scuba-diving.jpg\",\"datePublished\":\"2025-01-08T04:52:09+00:00\",\"description\":\"Three important tips on how to ascend when scuba diving. 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