Become a CCR Hypoxic Trimix Diver The SSI CCR Hypoxic Trimix program provides divers with the knowledge and experience required to independently plan and conduct unlimited trimix decompression dives to a maximum depth of 100 meters using a closed-circuit rebreather and a minimum of three bailout cylinders. This in-depth closed-circuit rebreather diving program is both physically and mentally challenging, holds the highest level of accolade in the industry, and reflects your commitment and experience as a diver. With safety at the forefront of the SSI training philosophy, this unit-specific program will provide more in-depth academic topics such as gas density, team bailout protocols, and expedition procedures to enable safe diving. This unit-specific program is available on the rEvo, SF2, AP Inspiration, Poseidon, Prism 2, or JJ rebreather and only uses trimix as the breathing gas to reduce gas density. Discover Local Course Dates Find your next diving adventure on Scubago - whether it's near you or at your travel destination - and book directly with the center of your choice. Powered by Sort by: Date ascending Date ascending Date descending Price ascending Price descending Distance ascending Distance decending View on Map Automatic 50 km 100 km 500 km Worldwide Facts and Training Standards Amount of Academic Sessions 5Amount of Pool/Confined Water Sessions 1Amount of Open Water Sessions 6Maximum Training Depth 100 m / 330 ftSuggested duration (h) 30 Languages English Deeper, further and longer Here are the benefits you can expect from attending this training program: The apex of CCR diving Take your teamwork skills to the extreme Gain the skills and experience required to make expedition-level dives Take your Rebreather Training Further As a certified CCR Hypoxic Trimix diver, you earned the most challenging closed-circuit rebreather diving certification in the industry. Your unit-specific training on the rEvo, SF2, AP Inspiration, Poseidon, Prism2, or JJ rebreather can take you into nearly any underwater environment. Expand your rebreather diving to explore the overhead environment with SSI’s Cave Diving and Wreck Diving programs. Or, try a semi-closed rebreather with the SCR Extended Range program. With our range of rebreather diving programs, there are no limits to your diving ambitions and goals. Technical Wreck DivingDo you want to experience amazing wreck dives? Increase your technical dive skills to conduct complex wreck penetration dives and join the world’s elite exploration divers. Start the SSI Technical Wreck Diver certification today!20Suggested duration (h)6Open Water SessionsFull Cave DivingWant to conduct complex underwater navigation as you explore deeper, longer underwater caves? SSI Full Cave Diving will teach you how to safely explore some of the deepest caves in the world. Start training for advanced cave dives today!20Suggested duration (h)6Open Water Sessions More Information Training Prerequisites SSI Entry-Level Programs – Open Water Diver, Freediver, or Mermaid require students to complete a water fitness evaluation prior to open water training. The goal of this evaluation is to determine a comfort level baseline consisting of: Swim Assessment Survival Float Technical Requirements To start training, students must create a MySSI profile. This can either be done via the SSI website at www.divessi.com/register or by installing the MySSI App. Simply download the app for either iOS or Android, set up the user profile, and access the world of diving in minutes! The MySSI App safely stores everything in one place, online or offline – training materials, logbook, and certification cards. This includes Recreational Scuba, Extended Range, Freediving and Mermaid. Training Center Selection & Affiliation Every student must select an SSI Training Center as their “Training Partner” during the course registration process. Affiliation ensures personalized service and a high-quality training experience. Students can also change affiliation or choose to affiliate with multiple Training Centers in their user profile. When affiliating with a Training Center online or via the MySSI App, a Privacy Policy Agreement will be processed to comply with GDPR regulations. Medical & Administrative Requirements Each student or candidate must complete the required SSI Training Record Forms prior to participating in any SSI training program. The forms for minors must be reviewed and signed by a parent or guardian. Responsible Diver Code SSI Responsible Diver Code - Scuba DivingSSI Responsible Diver Code - FreedivingSSI Responsible Diver Code - Extended Range Diving Diver Medical Statement & Questionnaire or Physician’s Approval to Dive (where required) Training Assumption of Risk, Liability Release, & Liability Release, & Hold Harmless Agreement (where required / not applicable within the European Union) Program-specific Completion Record (done by the Instructor prior to certification) Training Course Costs Training consists of various components which are either charged singly or as a package depending on the selected Training Center. The components are: Training Materials / Digital Kit Tuition for Academics and In-Water Training Open Water Training Dives Certification Discover the Wonders of the Deep with SSI's Blog Join us on an exciting journey of discovery and learn more about exhilarating diving adventures, dedicated conservation initiatives, and innovative educational opportunities that will help you illuminate the extraordinary beauty of the underwater world. Let's explore the underwater world together and delve into the hidden wonders beneath the gentle waves. Scuba Diving World Records: 10 Incredible Diving Feats 2026-10-25 Discover 10 incredible scuba diving world records, from the deepest dive to underwater endurance, age-defying achievements, and extreme-altitude diving. Best Freediving Destinations: 10 Stunning Reef Locations 2026-10-21 Explore 10 of the best freediving destinations, from Raja Ampat to Dominica, with stunning coral reefs, marine life, and tips for your next trip. Mermaid Tails for Adults: Find Your Perfect Tail 2026-10-19 Explore mermaid tails for adults, from fabric to silicone. Compare styles, comfort, safety, and prices to find the perfect tail for swimming and more. Featured destinations that are ideal for technical diving SSI’s Extended Range allows you to go beyond the limits of recreational diving. This extensive compilation of globally recognized tec diving programs will equip you to go decompression diving, explore more challenging environments, and use new equipment configurations. © iStock/ultraformaCroatiaA historically rich country in Southeast Europe, bordering the Adriatic Sea, Croatia is called “the country of a thousand islands”.Learn more © iStock/OnfokusPortugalDiving in Portugal not only offers vacationers a unique mix of underwater conditions and landscapes but will keep you busy above the water as well.Learn more © /Shutterstock-Igor TichonowCape VerdeA Cape Verde diving adventure awaits just a few hours by flight from Europe.Learn more © iStock/kurmyshovMaldivesAn island nation located off the southwest coast of India in the Indian Ocean, the Maldives is made up of 26 different ring-shaped reefs called, atolls.Learn more © iStock/narvikkEgyptThe Arab Republic of Egypt is a country that sits in the Northeast corner of Africa on the Mediterranean Sea to its north and the Red Sea to its east.Learn more © Shutterstock/chanchai duangdoosanBaliLocated just eight degrees from the equator, in the Java Sea, Bali is set between Islands of Lombok and Java in Indonesia.Learn more