{"id":23998,"date":"2025-01-08T12:52:26","date_gmt":"2025-01-08T04:52:26","guid":{"rendered":"https:\/\/scubatechphilippines.com\/scuba_blog\/?p=23998"},"modified":"2025-01-08T12:52:26","modified_gmt":"2025-01-08T04:52:26","slug":"smb-dsmb-scuba-diving","status":"publish","type":"post","link":"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/","title":{"rendered":"A Guide to SMBs and DSMBs for Scuba Diving"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">A Guide to SMBs and DSMBs for Scuba Diving<\/h1>\n\n\n\n<p>If you&#8217;re a scuba diver, you know how important it is to have the right gear for your underwater adventures. Two key pieces of equipment that can make a big difference in your safety and enjoyment are the surface marker buoy (SMB) and delayed surface marker buoy (DSMB). <\/p>\n\n\n\n<p>SMBs and DSMBs are used to signal your location to your dive partner or boat at the surface, as well as to warn boat traffic of your presence. <\/p>\n\n\n\n<p>In this article, we will cover everything you need to know about SMBs and DSMBs, including their:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Different uses<\/li>\n\n\n\n<li>Features<\/li>\n\n\n\n<li>Advantages and disadvantages<\/li>\n\n\n\n<li>Safety concerns<\/li>\n\n\n\n<li>Maintenance and care tips<\/li>\n<\/ul>\n\n\n\n<p>Whether you&#8217;re a new diver or a seasoned pro, read on to learn how SMBs and DSMBs can enhance your dive experience.<\/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\/smb-dsmb-scuba-diving\/#SMBs-vs-DSMBs\" >SMBs vs DSMBs<\/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\/smb-dsmb-scuba-diving\/#SMB-and-DSMB-features\" >SMB and DSMB features<\/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\/smb-dsmb-scuba-diving\/#Colors-of-SMBs-and-DSMBs\" >Colors of SMBs and DSMBs<\/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\/smb-dsmb-scuba-diving\/#Inflation-methods-for-SMBs-and-DSMBs\" >Inflation methods for SMBs and DSMBs<\/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\/smb-dsmb-scuba-diving\/#Choosing-between-an-SMB-or-DSMB\" >Choosing between an SMB or DSMB<\/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\/smb-dsmb-scuba-diving\/#How-to-deploy-an-SMB\" >How to deploy an SMB<\/a><\/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\/smb-dsmb-scuba-diving\/#How-to-deploy-a-DSMB\" >How to deploy a DSMB<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#DSMB-deployment-safety-concerns\" >DSMB deployment safety concerns<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#SMB-and-DSMB-training-certification\" >SMB and DSMB training certification<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#PADI-Delayed-Surface-Marker-Buoy-DSMB-Diver\" >PADI Delayed Surface Marker Buoy (DSMB) Diver<\/a><\/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\/smb-dsmb-scuba-diving\/#Maintenance-and-care-tips-for-SMBs-and-DSMBs\" >Maintenance and care tips for SMBs and DSMBs<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#SMB-and-DSMB-Maintenance\" >SMB and DSMB Maintenance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#SMB-and-DSMB-storage\" >SMB and DSMB storage<\/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\/smb-dsmb-scuba-diving\/#An-SMB-or-DSMB-can-make-your-dives-safer\" >An SMB or DSMB can make your dives safer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-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-16\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-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-17\" href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#SMB-and-DSMB-FAQ\" >SMB and DSMB FAQ<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SMBs-vs-DSMBs\"><\/span>SMBs vs DSMBs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>SMBs and DSMBs are essential pieces of equipment for scuba divers to ensure their safety and location are known. But what are they, and how do they differ?<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SMB: Surface Marker Buoy<\/strong>\n\n\n\n\n<ul class=\"wp-block-list\">\n<li>An inflatable buoy used to signal location to the surface team<\/li>\n\n\n\n<li>May be towed throughout the dive<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Is deployed at the surface<\/li>\n\n\n\n<li>Also known as a &#8216;safety sausage&#8217;<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>DSMB: Delayed Surface Marker Buoy<\/strong>\n<ul class=\"wp-block-list\">\n<li>An inflatable buoy used to mark location whilst submerged<\/li>\n\n\n\n<li>Is deployed at the end of the dive<\/li>\n\n\n\n<li>Is deployed at depth, often during ascent or on the safety stop<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p>Understanding the differences between SMBs and DSMBs is crucial for divers to use them effectively and ensure their safety during a dive.<\/p>\n\n\n\n<div class=\"scuba-b4-h2-2\" style=\"margin-top: 10px;margin-bottom: 10px;\" id=\"scuba-3297981189\"><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=\"SMB-and-DSMB-features\"><\/span>SMB and DSMB features<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>There are various types of SMBs and DSMBs available. Some of the most common SMB types include open-ended SMBs, closed-ended SMBs, and self-sealing SMBs. DSMBs are usually larger and more visible than SMBs and often come equipped with a reel for easier deployment and retrieval.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Open-ended SMBs:<\/strong> These SMBs have a single opening at the bottom and allow air to escape freely from the top, making them easier to inflate and deflate.<\/li>\n\n\n\n<li><strong>Closed-ended SMBs:<\/strong> These SMBs have a one-way valve that allows air to be added but not released, making them more buoyant and visible.<\/li>\n\n\n\n<li><strong>Self-sealing SMBs:<\/strong> These SMBs have a self-sealing valve that prevents air from escaping, making them easier to use and maintain.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2023\/04\/smb-and-dsmb-for-scuba-diving-lengths-and-colors.jpg\" alt=\"smb-and-dsmb-for-scuba-diving-guide-for-divers\" class=\"wp-image-24006\" srcset=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2023\/04\/smb-and-dsmb-for-scuba-diving-lengths-and-colors.jpg 1000w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2023\/04\/smb-and-dsmb-for-scuba-diving-lengths-and-colors-300x300.jpg 300w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2023\/04\/smb-and-dsmb-for-scuba-diving-lengths-and-colors-150x150.jpg 150w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2023\/04\/smb-and-dsmb-for-scuba-diving-lengths-and-colors-768x768.jpg 768w, https:\/\/scubatechphilippines.com\/scuba_blog\/wp-content\/uploads\/2023\/04\/smb-and-dsmb-for-scuba-diving-lengths-and-colors-45x45.jpg 45w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Colors-of-SMBs-and-DSMBs\"><\/span>Colors of SMBs and DSMBs<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>SMBs and DSMBs come in a range of colors, each with its own unique benefits. For example, bright colors such as yellow, orange, or pink are highly visible and easier to spot from a distance. Some SMBs and DSMBs also come in patterns or with SOLAS reflective tape for added visibility.<\/p>\n\n\n\n<p>In some regions, technical divers color-code DSMBs. Orange means a routine ascent, whereas yellow signifies that an emergency has occurred. There will be specific protocols for surface support if a yellow DSMB is deployed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Inflation-methods-for-SMBs-and-DSMBs\"><\/span>Inflation methods for SMBs and DSMBs<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>SMBs and DSMBs can be inflated in a variety of ways, including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Oral inflation:<\/strong> Inflated manually by blowing air into them using your mouth.<\/li>\n\n\n\n<li><strong>Regulator purge:<\/strong> Open-ended and self-sealing SMBs and DSMBs can be inflated by purging a regulator into the opening from below.<\/li>\n\n\n\n<li><strong>LPI inflate:<\/strong> The diver can connect their LPI hose to the SMB or DSMB and inflate it from their cylinder.<\/li>\n\n\n\n<li><strong>CO2 cartridge:<\/strong> There are also DSMBs that can be filled using a CO2 cartridge. These methods are typically faster but risk unintentional filling when at depth. These DSMBs are beneficial for CCR divers.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Choosing-between-an-SMB-or-DSMB\"><\/span>Choosing between an SMB or DSMB<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>When deciding whether to use a Surface Marker Buoy (SMB) or Delayed Surface Marker Buoy (DSMB), it&#8217;s important to consider the diver&#8217;s needs for different types of diving. Here are some key points to consider:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Deployment Method:<\/strong> The main difference between SMB and DSMB is the deployment method. SMB is deployed at the surface and can be towed during the dive, while DSMB is only deployed at the end of the dive, on the ascent, or during the safety stop.<\/li>\n\n\n\n<li><strong>Type of Diving:<\/strong> SMB is better for drift diving when divers need to be monitored and followed by the dive boat. On the other hand, DSMB is useful for warning boat traffic that a diver will be surfacing or announcing to the dive boat that the diver is returning.<\/li>\n\n\n\n<li><strong>Ease of Use:<\/strong> SMB has to be dragged around during the dive, which some find annoying. However, an SMB does not require the skill of safe deployment when underwater. A DSMB is unobtrusive throughout the dive but requires skill to deploy on the ascent.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/emergency-signaling-devices-for-scuba-diving\/\">Emergency Signaling<\/a>:<\/strong> Both options can act as <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/emergency-signaling-devices-for-scuba-diving\/\">visual emergency signaling devices<\/a> at the surface.<\/li>\n<\/ol>\n\n\n\n<p>By considering these factors, divers can make an informed decision on which option to choose for their specific needs.<\/p>\n\n\n\n<div class=\"wp-block-columns 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<iframe sandbox=\"allow-popups allow-scripts allow-modals allow-forms allow-same-origin\" style=\"width:120px;height:240px;\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" frameborder=\"0\" src=\"\/\/ws-na.amazon-adsystem.com\/widgets\/q?ServiceVersion=20070822&#038;OneJS=1&#038;Operation=GetAdHtml&#038;MarketPlace=US&#038;source=ss&#038;ref=as_ss_li_til&#038;ad_type=product_link&#038;tracking_id=scubtechphil-20&#038;language=en_US&#038;marketplace=amazon&#038;region=US&#038;placement=B07M6DD6QT&#038;asins=B07M6DD6QT&#038;linkId=bf5993cf2a275e80dd7b77cdc91986d8&#038;show_border=true&#038;link_opens_in_new_window=true\"><\/iframe>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<iframe sandbox=\"allow-popups allow-scripts allow-modals allow-forms allow-same-origin\" style=\"width:120px;height:240px;\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" frameborder=\"0\" src=\"\/\/ws-na.amazon-adsystem.com\/widgets\/q?ServiceVersion=20070822&#038;OneJS=1&#038;Operation=GetAdHtml&#038;MarketPlace=US&#038;source=ss&#038;ref=as_ss_li_til&#038;ad_type=product_link&#038;tracking_id=scubtechphil-20&#038;language=en_US&#038;marketplace=amazon&#038;region=US&#038;placement=B000O9Y7DS&#038;asins=B000O9Y7DS&#038;linkId=546fc76f93cf50468d5ef594d3fc823d&#038;show_border=true&#038;link_opens_in_new_window=true\"><\/iframe>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<iframe sandbox=\"allow-popups allow-scripts allow-modals allow-forms allow-same-origin\" style=\"width:120px;height:240px;\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" frameborder=\"0\" src=\"\/\/ws-na.amazon-adsystem.com\/widgets\/q?ServiceVersion=20070822&#038;OneJS=1&#038;Operation=GetAdHtml&#038;MarketPlace=US&#038;source=ss&#038;ref=as_ss_li_til&#038;ad_type=product_link&#038;tracking_id=scubtechphil-20&#038;language=en_US&#038;marketplace=amazon&#038;region=US&#038;placement=B01GSMPISC&#038;asins=B01GSMPISC&#038;linkId=30231fd401b983ba93ea051e6f898d05&#038;show_border=true&#038;link_opens_in_new_window=true\"><\/iframe>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<iframe sandbox=\"allow-popups allow-scripts allow-modals allow-forms allow-same-origin\" style=\"width:120px;height:240px;\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" frameborder=\"0\" src=\"\/\/ws-na.amazon-adsystem.com\/widgets\/q?ServiceVersion=20070822&#038;OneJS=1&#038;Operation=GetAdHtml&#038;MarketPlace=US&#038;source=ss&#038;ref=as_ss_li_til&#038;ad_type=product_link&#038;tracking_id=scubtechphil-20&#038;language=en_US&#038;marketplace=amazon&#038;region=US&#038;placement=B09VDGLLYJ&#038;asins=B09VDGLLYJ&#038;linkId=d76b82f60bd5968623938b3fab69850e&#038;show_border=true&#038;link_opens_in_new_window=true\"><\/iframe>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<iframe sandbox=\"allow-popups allow-scripts allow-modals allow-forms allow-same-origin\" style=\"width:120px;height:240px;\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" frameborder=\"0\" src=\"\/\/ws-na.amazon-adsystem.com\/widgets\/q?ServiceVersion=20070822&#038;OneJS=1&#038;Operation=GetAdHtml&#038;MarketPlace=US&#038;source=ss&#038;ref=as_ss_li_til&#038;ad_type=product_link&#038;tracking_id=scubtechphil-20&#038;language=en_US&#038;marketplace=amazon&#038;region=US&#038;placement=B08S44PBNN&#038;asins=B08S44PBNN&#038;linkId=34ffb180958132b3f7bd50a6e2f17be2&#038;show_border=true&#038;link_opens_in_new_window=true\"><\/iframe>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How-to-deploy-an-SMB\"><\/span>How to deploy an SMB<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Deploying an SMB at the surface is a relatively straightforward process:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Ensure that you have the SMB and reel\/spool ready for deployment.<\/li>\n\n\n\n<li>In a vertical position, add air to the SMB using your regulator or by orally inflating it, depending on the design.<\/li>\n\n\n\n<li>When the SMB is fully inflated, hold it upright and allow it to drag behind you.<\/li>\n\n\n\n<li>As you swim, maintain tension on the line to keep the SMB upright.<\/li>\n\n\n\n<li>Once the dive is complete, retrieve the SMB by reeling it in and packing it away in a secure location.<\/li>\n<\/ol>\n\n\n\n<div class=\"scuba-b4-h2-3\" style=\"margin-top: 10px;margin-bottom: 10px;\" id=\"scuba-3025078985\"><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=\"How-to-deploy-a-DSMB\"><\/span>How to deploy a DSMB<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Deploying a DSMB on ascent can be more challenging than deploying an SMB, as it requires a bit more skill and coordination. Here are the general steps to follow:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Make sure you are at the appropriate depth for deploying the DSMB. This is typically near the end of the dive during the safety stop.<\/li>\n\n\n\n<li>Attach the DSMB to your reel or spool, if it is not already connected.<\/li>\n\n\n\n<li>Add sufficient air into the DSMB by oral inflation, purging your regulator, or connecting it to your LPI hose.<\/li>\n\n\n\n<li>The DSMB should be fully inflated when it reaches the surface. However, <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-gas-laws-for-diving-physics\/\">Boyle&#8217;s Law<\/a> means that the gas will expand as the DSMB ascends. For instance, from 10m (1 ata) depth, the gas in the DSMB will double in volume.<\/li>\n\n\n\n<li>Ensure that the line from your spool or reel is not entangled with you or your <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-equipment-shopping-buying-best-dive-gear\/\">dive gear<\/a>.<\/li>\n\n\n\n<li>Release the DSMB and control the ascent speed using the reel or spool.<\/li>\n\n\n\n<li>Once the DSMB reaches the surface, maintain some tension on the line to keep the DSMB vertical.<\/li>\n<\/ol>\n\n\n\n<p>It&#8217;s important to note that deploying a DSMB requires practice and training, and should only be attempted by those with the necessary skills and experience. It&#8217;s always a good idea to practice deploying a DSMB in a controlled environment, such as in a swimming pool or during a training dive, before attempting to do so in open water.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DSMB-deployment-safety-concerns\"><\/span>DSMB deployment safety concerns<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/wreck-diving-risks\/\">Entanglement<\/a>:<\/strong> One of the biggest risks of deploying a DSMB is the possibility of entanglement. The diver could be pulled up by the DSMB, causing an uncontrolled ascent which can lead to <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/types-decompression-sickness-dcs\/\">decompression sickness<\/a>. Always check above you before releasing the DSMB in case other divers are shallower and could get entangled.<\/li>\n\n\n\n<li><strong>Reel jams or snags:<\/strong> Another safety concern is the possibility of the reel jamming or snagging after the DSMB is released. If this happens, it&#8217;s important to let go of the reel and surface safely.<\/li>\n\n\n\n<li><strong>Do not connect DSMB to BCD:<\/strong> Never connect the DSMB reel or spool to your BCD once it is deployed. If your DSMB gets snagged by a passing boat or pulled by strong currents, it can quickly pull you to the surface.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SMB-and-DSMB-training-certification\"><\/span>SMB and DSMB training certification<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Formal training and certification for using SMBs and DSMBs are not mandatory. However, it is highly recommended given the risks inherent to DSMB deployment.<\/p>\n\n\n\n<p>Some high-quality Open Water or Advanced Open Water courses include instruction on SMB and DSMB use.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"PADI-Delayed-Surface-Marker-Buoy-DSMB-Diver\"><\/span>PADI Delayed Surface Marker Buoy (DSMB) Diver<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>For divers who want more structured instruction and supervised practice, PADI offers a <a href=\"https:\/\/www.padi.com\/courses\/delayed-surface-marker-buoy-dsmb-diver\" target=\"_blank\" rel=\"noreferrer noopener\">DSMB Diver Specialty course<\/a>. This course provides divers with the knowledge and skills to safely use a DSMB on their dives, including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Preparing and stowing your DSMB and reel<\/li>\n\n\n\n<li>Deploying the DSMB from a stationary position and from mid-water<\/li>\n\n\n\n<li>Swimming while towing a DSMB and managing the reel and line<\/li>\n\n\n\n<li>Making a safety stop using the DSMB line.<\/li>\n<\/ul>\n\n\n\n<p>The course includes both classroom and practical training, allowing divers to gain hands-on experience under the guidance of a qualified instructor.<\/p>\n\n\n\n<p>Regardless of whether you choose to take a formal course or not, it is important to practice deploying and using SMBs and DSMBs in a controlled environment before taking them on a dive. <\/p>\n\n\n\n<p>This will help you feel comfortable and confident with the devices, and ensure that you are able to use them effectively in case of an emergency.<\/p>\n\n\n\n<div class=\"scuba-b4-h2-4\" style=\"margin-top: 10px;margin-bottom: 10px;\" id=\"scuba-3996625310\"><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=\"2954736365\" \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=\"Maintenance-and-care-tips-for-SMBs-and-DSMBs\"><\/span>Maintenance and care tips for SMBs and DSMBs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Regular maintenance and care are essential for the longevity and reliability of SMBs and DSMBs. Here are some key points to consider:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SMB-and-DSMB-Maintenance\"><\/span>SMB and DSMB Maintenance<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Rinse the SMB or DSMB thoroughly in fresh water after each dive to remove salt and debris that can damage the material or mechanism.<\/li>\n\n\n\n<li>Inspect the SMB or DSMB for damage such as tears, holes, or corrosion. If any damage is found, it should be repaired or replaced before the next dive.<\/li>\n\n\n\n<li>Check the inflator mechanism and line connections to ensure they are functioning correctly and securely attached.<\/li>\n\n\n\n<li>Replace the CO2 cartridge or re-arm the inflator mechanism after each use or as specified by the manufacturer.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SMB-and-DSMB-storage\"><\/span>SMB and DSMB storage<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Store the SMB or DSMB in a dry, cool, and shaded place away from direct sunlight or heat sources.<\/li>\n\n\n\n<li>Keep the SMB or DSMB away from sharp objects or surfaces that could damage it.<\/li>\n\n\n\n<li>Store the SMB or DSMB in a way that allows it to fully dry before packing it away to prevent mold and mildew growth.<\/li>\n\n\n\n<li>Check the SMB or DSMB periodically during storage to ensure it remains in good condition and is ready for use when needed.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"An-SMB-or-DSMB-can-make-your-dives-safer\"><\/span>An SMB or DSMB can make your dives safer<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>In conclusion, SMBs and DSMBs are essential tools for scuba divers to ensure their safety and communicate with surface support. <\/p>\n\n\n\n<p>As we have discussed, choosing the right option depends on the type of dive and the diver&#8217;s needs. Key takeaways from this article include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SMBs are ideal for drift diving and monitoring by surface support, while DSMBs are useful for announcing surfacing and require deployment skills on the ascent.<\/li>\n\n\n\n<li>Training and certification are recommended for safe DSMB use but are not mandatory.<\/li>\n\n\n\n<li>Proper maintenance and care are important for the longevity of SMBs and DSMBs.<\/li>\n\n\n\n<li>Safety concerns with DSMB deployment underwater include entanglement, uncontrolled ascent, and DCS.<\/li>\n<\/ul>\n\n\n\n<p>As a responsible diver, it is important to continue learning and practicing the safe use of SMBs and DSMBs in future dives. With proper knowledge and precautions, these devices can enhance the safety and enjoyment of your diving experiences.<\/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 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\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SMB-and-DSMB-FAQ\"><\/span>SMB and DSMB 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-1682658379517\"><strong class=\"schema-faq-question\">What is the difference between SMB and DSMB?<\/strong> <p class=\"schema-faq-answer\">An SMB is deployed at the surface and may be towed around during a scuba dive. In contrast, a DSMB is deployed on the ascent at the end of a dive.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1682658405643\"><strong class=\"schema-faq-question\">What is a DSMB?<\/strong> <p class=\"schema-faq-answer\">A DSMB is a Delayed Surface Marker Buoy. It is an inflatable tube used by a scuba diver to mark their underwater location on the surface.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1682658444280\"><strong class=\"schema-faq-question\">What is an SMB?<\/strong> <p class=\"schema-faq-answer\">An SMB is a Surface Marker Buoy. This is an inflated tube or float that the diver tows during a dive so that their location can be monitored from the surface.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1682658467200\"><strong class=\"schema-faq-question\">Can you use an SMB as a DSMB?<\/strong> <p class=\"schema-faq-answer\">Most SMBs do not have an over-pressure valve. They may burst as the gas expands on an ascent. A DSMB should be used for deployments whilst still at depth.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1682658488457\"><strong class=\"schema-faq-question\">Can you use a lift bag as a DSMB?<\/strong> <p class=\"schema-faq-answer\">Lift bags were used as DSMBs before dedicated DSMBs were invented. They are not ideal for the task because they sit low in the water and have a high <a href=\"https:\/\/scubatechphilippines.com\/scuba_blog\/scuba-gas-planning-management-divers\/\">gas volume<\/a>; which exacerbates risk of uncontrolled ascents.<\/p> <\/div> <\/div>\n<p id=\"rop\"><small>Originally posted 2023-04-15 14:35:31. <\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>Learn how to choose, deploy, and maintain surface marker buoys (SMBs) and delayed surface marker buoys (DSMBs) for safe scuba diving!<\/p>\n","protected":false},"author":2,"featured_media":24005,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[880],"tags":[1877,1873,1876,1875,1874,1878,1879],"class_list":["post-23998","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-scuba-diving_equipment","tag-dsmb-colors","tag-how-to-deploy-a-dsmb","tag-inflation-methods-for-a-dsmb","tag-key-features-of-a-dsmb","tag-the-difference-between-an-smb-and-dsmb","tag-using-a-delayed-surface-marker-buoy","tag-using-a-surface-marker-buoy"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ultimate Guide to SMBs and DSMBs for Scuba Diving<\/title>\n<meta name=\"description\" content=\"Learn how to choose, deploy, and maintain surface marker buoys (SMB) and delayed surface marker buoys (DSMB) for safe 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RAID, PADI, TecRec, SSI and BSAC qualified technical diving instructor. Subic Bay, Philippines. Former Royal Air Force officer. 30+ years of high-level global dive experience. https:\/\/scubatechphilippines.com\/scuba_blog\/andy-davis-technical-diving\/","sameAs":["https:\/\/scubatechphilippines.com","https:\/\/facebook.com\/ScubaTechPhilippines","https:\/\/www.instagram.com\/andydavistechnicaldiving\/","https:\/\/www.linkedin.com\/in\/andrewdavis7\/","https:\/\/www.pinterest.ph\/andydavistechnicaldiving\/","https:\/\/x.com\/DivePhilippines","https:\/\/www.youtube.com\/AndyDavisTechnicalDiving"],"url":"https:\/\/scubatechphilippines.com\/scuba_blog\/author\/andy-davis\/"},{"@type":"Question","@id":"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#faq-question-1682658379517","position":1,"url":"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#faq-question-1682658379517","name":"What is the difference between SMB and DSMB?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"An SMB is deployed at the surface and may be towed around during a scuba dive. In contrast, a DSMB is deployed on the ascent at the end of a dive.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#faq-question-1682658405643","position":2,"url":"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#faq-question-1682658405643","name":"What is a DSMB?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A DSMB is a Delayed Surface Marker Buoy. It is an inflatable tube used by a scuba diver to mark their underwater location on the surface.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#faq-question-1682658444280","position":3,"url":"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#faq-question-1682658444280","name":"What is an SMB?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"An SMB is a Surface Marker Buoy. This is an inflated tube or float that the diver tows during a dive so that their location can be monitored from the surface.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#faq-question-1682658467200","position":4,"url":"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#faq-question-1682658467200","name":"Can you use an SMB as a DSMB?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Most SMBs do not have an over-pressure valve. They may burst as the gas expands on an ascent. A DSMB should be used for deployments whilst still at depth.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#faq-question-1682658488457","position":5,"url":"https:\/\/scubatechphilippines.com\/scuba_blog\/smb-dsmb-scuba-diving\/#faq-question-1682658488457","name":"Can you use a lift bag as a DSMB?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Lift bags were used as DSMBs before dedicated DSMBs were invented. They are not ideal for the task because they sit low in the water and have a high gas volume; which exacerbates risk of uncontrolled ascents.","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/posts\/23998","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=23998"}],"version-history":[{"count":0,"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/posts\/23998\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/media\/24005"}],"wp:attachment":[{"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/media?parent=23998"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/categories?post=23998"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scubatechphilippines.com\/scuba_blog\/wp-json\/wp\/v2\/tags?post=23998"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}