Become a Certified Extended Range Cavern Diver with SSI
The SSI Extended Range Cavern Diving program gives you a small glimpse into the exciting world of cave diving. As an SSI Extended Range Cavern diver, you will learn how to use cavern diving equipment, gas management concepts, and buddy team skills to safely conduct cavern penetration dives. The SSI Extended Range Cavern Diving program trains you to dive in caverns within the daylight zone to a maximum depth of 40 meters. From the grandest Mexican cenotes to vast caverns, becoming a cavern diver allows you to experience it all. Start the SSI Extended Range Cavern Diving program online today!
Learn technical diving with SSI
SSI has developed specific training materials with exciting, cutting-edge manuals developed by industry professionals with decades of technical diving experience. As with all SSI programs, Extended Range is designed to fit your schedule. Training is flexible to match your goals and objectives. With theThe range of open-circuit programs provides training in either sidemount or twinset configurations, meaning you can develop your skills up to a maximum depth of 100 meters. During your program, your instructor will cover everything including supreme buoyancy, propulsion, equipment management, and effective decompression. Learn how to extend your dive times by joining the growing community of Mares Horizon semi-closed rebreather divers. With both no-decompression and decompression diving programs available on this light-weight simple unit, you will never look back to blowing bubbles again.
Explore the silent world with the SSI Closed-Circuit Rebreather (CCR) programs. With a continuum of training programs available from 30 to 100 meters on the rEvo, JJ, SF2, AP Inspiration, Prism 2, or Poseidon CCR, you can find the perfect pathway that suits your diving needs. You will learn and master new skills designed to enhance your safety and enjoyment using this new equipment design. Academically you can advance your knowledge and understanding of principles, procedures, and theories specific to diving safely in an overhead environment. Explorers will love the SSI overhead program options of either diving in a wreck, cave, or mine. You will adapt your existing equipment or be introduced to new equipment concepts and the technically oriented dive configuration to make exploration of the overhead environment safe and rewarding. SSI has invested in the development of specific technical diving training materials with exciting, cutting-edge manuals that include review sessions, a specific technical diving logbook, and wetnotes.
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.
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
Amount of Academic Sessions
Amount of Pool/Confined Water Sessions
Amount of Open Water Sessions
40 m / 130 ft
Maximum Training Depth
Suggested duration (h)
Experience the overhead environment
Here are the benefits you can expect from attending this training program:
Gain confidence while experiencing exhilaration inside the daylight zone
Learn the fundamental principles of overhead environment diving
Easy progression from caverns to wrecks
Register free and start training right away!
To get started, simply create a free user profile at www.divessi.com/register or directly through the MySSI App and you will get immediate access to SSI’s free trial programs. During registration you will need to select an SSI Training Center to affiliate with to guide you through the training process. Just check the Center Locator for your Center of choice, their upcoming training schedule, travel, and social events, and much more.
Simply download the MySSI App from your preferred app store, set up your profile, and discover the world of diving with the following benefits:
Continue your Extended Range training
SSI’s Extended Range programs offer specific training materials with exciting, cutting-edge manuals developed by industry professionals with decades of technical diving experience. Continue your technical diving training with one of SSI’s many Extended Range specialties. As with all SSI programs, Extended Range is designed to fit your schedule. Training is flexible to match your goals and objectives. With the new sense of confidence and control gained from your Cavern Diver program, you will be ready to delve deeper into the world of technical diving. Go further and explore caves the way you never have before with the SSI Cave Diver and Full Cave Diver specialties. Or, challenge yourself in another type of overhead environment with Extended Range Wreck Diving and Technical Wreck Diving.
Extended Range Wreck Diving
Do you dream of exploring ancient ships or famous world war wrecks? Become an SSI Extended Range Wreck Diver and learn how to go wreck penetration diving up to a maximum depth of 40 meters. Start this exciting SSI advanced wreck diving course online today!
Technical Wreck Diving
Do 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!
SSI Entry-Level Programs – Open Water Diver, Freediving Level 1, 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:
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.
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
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
Technical Diving Featured Destinations
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.