{"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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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_86 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 <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/best-ascent-speed-scuba-diving\/\">slow ascent<\/a> 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 Immersion Pulmonary Edema (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 id=\"scuba-539381919\" class=\"scuba-b4-h2-2 scuba-entity-placement\" style=\"margin-top: 10px;margin-bottom: 10px;\"><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 class=\"wp-block-paragraph\">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\/types-decompression-sickness-dcs\/\">decompression illness<\/a> (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 class=\"wp-block-paragraph\">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 <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/types-decompression-sickness-dcs\/\">decompression sickness<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is because a very <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/best-ascent-speed-scuba-diving\/\">slow ascent<\/a> 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 class=\"wp-block-paragraph\">When studied, an <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/best-ascent-speed-scuba-diving\/\">ascent rate<\/a> 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 class=\"wp-block-paragraph\">As such, the optimal approach to ascending is to maintain an accurate <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/best-ascent-speed-scuba-diving\/\">ascent rate<\/a> 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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 id=\"scuba-3327784143\" class=\"scuba-b4-h2-3 scuba-entity-placement\" style=\"margin-top: 10px;margin-bottom: 10px;\"><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 class=\"wp-block-paragraph\">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 <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/types-decompression-sickness-dcs\/\">decompression sickness<\/a> and other diving-related illnesses. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Remember to strike the right balance and maintain an <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/best-ascent-speed-scuba-diving\/\">ascent rate<\/a> 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-995f960e 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 class=\"wp-block-paragraph\"><\/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 class=\"wp-block-paragraph\"><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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">Andy 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 class=\"wp-block-paragraph\">Prior to becoming a professional <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/what-is-technical-diving\/\">technical diving<\/a> 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 class=\"wp-block-paragraph\">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-995f960e 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-995f960e 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":"closed","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":7}},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - 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. 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The exact figures are unknown because many fatal cases may be confused with drowning.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#faq-question-1682661559048","position":2,"url":"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#faq-question-1682661559048","name":"Is it better to ascend in a vertical or horizontal position when scuba diving?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"It is best to ascend horizontally from a scuba dive. Beginners with poor buoyancy control can ascend vertically as a precaution against an uncontrolled ascent.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#faq-question-1682661608425","position":3,"url":"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#faq-question-1682661608425","name":"What happens when divers ascend?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"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.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#faq-question-1682661628734","position":4,"url":"https:\/\/scubatechphilippines.com\/scuba_blog\/how-to-ascend-when-scuba-diving\/#faq-question-1682661628734","name":"Is it best to ascend slowly when scuba diving?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"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.","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/posts\/15162","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/comments?post=15162"}],"version-history":[{"count":0,"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/posts\/15162\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/media\/22244"}],"wp:attachment":[{"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/media?parent=15162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/categories?post=15162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/tags?post=15162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}