Try SCR Diving with the Mares Horizon

For divers seeking to leave their large scuba cylinder behind, sign up for an SSI Try SCR Diving experience today! In this introductory SCR course, you will try a revolutionary semi-closed rebreather system that is easy to use, natural to dive, and designed with all levels of diver in mind. The Mares Horizon is in a class of its own amongst semi-closed rebreathers. Enjoy a new experience diving with fewer bubbles, improved buoyancy, and increased dive time. The Mares Horizon semi-closed rebreather is the perfect companion for avid photographers and wildlife enthusiasts. Get up close and personal with marine life; Try SCR Diving 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.


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


כמות המפגשים האקדמיים


כמות הפעלות בבריכה/מים מוגנים

12 m / 36 ft

עומק אימון מרבי


Suggested duration (h)

Experience the silent world of rebreathers

Here are the benefits you can expect from attending this training program:

Discover the fascination of rebreather diving

Enjoy this lightweight revolutionary rebreather

Gain knowledge of the basic theories behind SCR diving


הירשם בחינם והתחיל להתאמן מיד!

To get started, simply create a free user profile at 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:

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

Download iOS Download Android

Continue your SSI Extended Range Training

Did you enjoy diving with the Mares Horizon in the Try SCR course? Start your rebreather training on a semi-closed rebreather in the SCR Diving course and conduct no-decompression dives to a maximum depth of 30 meters. Do you want to take your semi-closed rebreather deeper? Take the SCR Extended Range program and learn to dive safely to a maximum depth of 40 meters. Are you looking to dive deeper or longer than even semi-closed rebreathers allow? Take the next step in your technical diving journey and become a closed-circuit rebreather diver with SSI’s CCR Diving course.

More Information

Training Prerequisites

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:

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 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 Diving SSI Responsible Diver Code - Freediving SSI 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


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.


מדינה עשירה מבחינה היסטורית בדרום מזרח אירופה, הגובלת בים האדריאטי, קרואטיה נקראת "ארץ אלף האיים".

Learn more


צלילה בפורטוגל לא רק מציעה לנופשים שילוב ייחודי של תנאים ונופים מתחת למים, אלא גם תעסיק אתכם מעל המים.

Learn more

הרפתקת צלילה בכף ורדה מחכה רק כמה שעות טיסה מאירופה.

Learn more

האיים המלדיביים

האיים המלדיביים, מדינת אי הממוקמת מול החוף הדרום-מערבי של הודו באוקיינוס ההודי, מורכבת מ-26 שוניות שונות בצורת טבעת הנקראות אטולים.

Learn more

הרפובליקה הערבית של מצרים היא מדינה היושבת בפינה הצפון-מזרחית של אפריקה על הים התיכון מצפון לה והים האדום ממזרחה.

Learn more

ממוקם רק שמונה מעלות מקו המשווה, בים ג'אווה, באלי שוכנת בין האיים לומבוק וג'אווה באינדונזיה.

Learn more

האיים האזוריים

הצלילה הטובה ביותר באיים האזוריים היא מסוף האביב ועד חודשי הקיץ של אפריל עד אוקטובר, כאשר האוקיינוס חם יותר, והחיים הימיים נמצאים בשיאם.

Learn more

איי סוקורו

צפו למים כחולים עמוקים וזרמים חזקים, כמו גם לחיים ימיים בשפע סביב איי סוקורו.

Learn more


בטנריף מתחת למים תמצאו מגוון גדול של חי וצומח, מבני סלע עוצרי נשימה, מערות לבה וספינות טרופות פנטסטיות.

Learn more