Become a CCR Extended Range Trimix Instructor with SSI

The SSI CCR Extended Range Trimix Instructor course provides all you need to organize and conduct the CCR Extended Range Trimix course. Upon completion, you will be certified to train divers to conduct decompression dives to a maximum depth of 45 meters using a closed-circuit rebreather. This trimix dive course is developed and intended for the use of trimix as the breathing gas to reduce inert gas narcosis and increase diver safety. However, a CCR Extended Range “air” Instructor certification option is also available for those areas where helium is inaccessible. When you complete this technical diving certification you will earn either the SSI CCR Extended Range Trimix Instructor or the SSI CCR Extended Range Instructor certification. Live your dream closed circuit diving career. Start this course online today!

Become an Extended Range Professional with SSI

Scuba Schools International (SSI) began in 1970 and is the name to trust in the diving industry. SSI represent more than 3,300 training centers and resorts in over 130 countries and have over 50,000 affiliated SSI Professionals and growing every day. The experience that SSI has built in the last five decades of training divers has resulted in the most sophisticated and effective technical diving education system there is. The progressive and personalized training approach, combined with in-water practice sessions, ensures you have the skills and experience you need to reach your full potential.

SSI’s globally recognized certifications are the best way to continue your lifelong technical diving adventures. There are SSI courses for nearly every environment and personal passion you might have, and the digital training materials are available online in more than 30 languages. SSI has invested in the development of specific technical diving training materials with exciting, cutting-edge manuals that include review sessions, a specific Extended Range logbook, and wetnotes. All SSI dive courses and training materials are developed by industry professionals with decades of technical diving experience. As with all SSI courses, Extended Range works to fit your schedule. The training is flexible to match your goals and objectives. Choose your preferred SSI courses and start online today!


Digital Learning & Academics

SSI has mastered the use of digital technology to make your learning experience easy.

You can start by studying the academics anytime, anywhere at your own convenience and your selected Training Center will schedule your review and in-water training sessions.


In-Water Training

During the pool/confined water training, your SSI Instructor will teach you all the necessary skills in a controlled environment until you are comfortable and ready to go to the open water. During the open water training dives, you will apply your knowledge and repeat the skills in a real-world environment under the supervision of your Instructor.



Once you have completed all required training sessions, final exam and open water training dives, your SSI Training Center will issue your digital certification card which will show up instantly on your MySSI App.

We congratulate you on your accomplishment and welcome you to SSI’s global diving community.

Facts and Training Standards


Minimum Age


Amount of Academic Sessions


Amount of Pool/Confined Water Sessions


Amount of Open Water Sessions

45 m / 150 ft

Maximum Training Depth


Suggested duration (h)



Register free and start training right away!

要开始使用,只需在 或直接通过 MySSI APP创建免费用户配置文件,您就可以立即访问SSI的免费体验课程。在注册过程中,您需要选择隶属一个SSI培训中心,以指导您完成培训。只需查看中心定位器以了解您选择的中心、他们即将举行的培训计划、旅行和社交活动等等。

Simply download the MySSI App from your preferred app store, set up your profile, and discover the world of diving with the following benefits:

Instant free access to SSI’s trial programs and Blue Oceans

Lifetime access to your digital training materials and certifications

Digital logbook with thousands of dive sites around the world and potential wildlife sightings

Latest events, news, videos and much more

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Continue your professional career

Becoming an SSI CCR Extended Range Trimix Instructor is an exciting step in your closed circuit diving career pathway. Take the next step and start teaching more Extended Range courses. Teaching more courses is the best way to grow your diving career, have more flexibility, and generate more income as an SSI Professional. Choose your preferred courses and get started online today.

Explore career opportunities for dive professionals worldwide

Stop waiting, start exploring the world and turn your passion into a career! MyDiveGuide is a unique dive site database with over 16,000 dive sites, thrilling specialist dives and featured destinations. These are the places where scuba instructors and divemasters have great job opportunities! Ready to live your ultimate dream? Check out MyDiveGuide and start your diving career today with SSI!