Glossary · Training

SSI (Scuba Schools International)

SSI (Scuba Schools International) is a prominent global training organisation that provides certifications for recreational and professional scuba diving. Founded in 1970, SSI has grown into one of the world's largest and most recognised names in diver education, with a strong emphasis on practical, in-water training and a commitment to diver safety.

SSI's training methodology is often described as 'comfort through repetition', focusing on mastering skills at an individual pace. It offers a wide spectrum of programmes, including entry-level certifications like Open Water Diver, various specialty courses (e.g., Deep Diving, Enriched Air Nitrox), and professional ratings up to Instructor Trainer. SSI operates through a network of dive centres and resorts worldwide.

For liveaboard guests, an SSI certification means their diving qualifications are globally recognised and accepted at virtually all dive operations. Many liveaboards have SSI instructors onboard or partner with SSI dive centres, allowing guests to complete courses, specialities, or even professional training during their trip, enhancing their diving experience.

1At a glance

Founded
1970
Headquarters
Germany
Global presence
Over 120 countries and territories
Training approach
Comfort through Repetition, practical in-water focus
Certification types
Recreational, professional, freediving, extended range, mermaid
Digital learning
Comprehensive online learning platform and app
Parent company
Mares (since 2014)

2How SSI certification works

The SSI certification process typically begins with academic study, often through their digital learning platform, allowing students to complete theoretical modules at their own pace. This is followed by practical confined water (pool or shallow, calm water) sessions where fundamental scuba skills are taught and practised until comfortable. The final stage involves open water dives, usually four for the entry-level Open Water Diver course, during which students demonstrate mastery of skills in a real diving environment.

SSI places a strong emphasis on practical, in-water experience. Their 'Comfort through Repetition' methodology ensures that divers are not rushed through skills but are given ample opportunity to practise until they feel confident and competent. Instructors assess performance based on mastery rather than strict time limits, fostering a relaxed and effective learning environment.

Upon successful completion of all academic, confined water, and open water requirements, divers are issued a digital certification card, which can be easily accessed via the SSI app. This certification is internationally recognised and serves as proof of qualification to dive and rent equipment at dive centres worldwide.

3SSI vs. PADI vs. CMAS

FeatureSSI (Scuba Schools International)PADI (Professional Association of Diving Instructors)CMAS (Confédération Mondiale des Activités Subaquatiques)
Foundation197019661959
ApproachComfort through Repetition; digital-first learningPerformance-based; structured modulesClub-based; progressive, often expedition-oriented
Global reachOver 120 countriesOver 180 countriesAround 130 member federations
Certification levelsOpen Water, Advanced Adventurer, Specialty, Professional (various)Open Water, Advanced Open Water, Specialty, Professional (various)One Star Diver, Two Star Diver, Three Star Diver, Instructor
Digital presenceStrong (app, online learning, digital cards)Strong (app, online learning, digital cards)Variable by federation; increasingly digital

4What SSI means for your liveaboard trip

Holding an SSI certification means you possess a widely accepted and respected credential, ensuring you can participate in all planned dives on a liveaboard trip without issue. Dive operators globally recognise SSI, making your check-in process smooth and efficient, regardless of where your liveaboard departs from or operates.

For those looking to advance their diving skills, many liveaboards either have SSI instructors onboard or are affiliated with SSI dive centres. This presents a unique opportunity to complete specialty courses, such as Deep Diving, Enriched Air Nitrox (Nitrox), or Wreck Diving, during your trip. Learning in the actual dive environment, guided by experienced instructors, can be highly effective and convenient.

Beyond formal training, an SSI certification signifies a foundation of safety and competence. Liveaboard crews can trust that SSI-certified divers have been thoroughly trained, contributing to a safer and more enjoyable experience for everyone. It allows divers to focus on exploring incredible dive sites, knowing their skills are up to standard.

5SSI's key training areas

CategoryExample CoursesFocusBenefit to diver
Recreational ScubaOpen Water Diver, Advanced AdventurerCore skills, safety, explorationAccess to global dive sites, foundational knowledge
Specialty ProgramsDeep Diving, Nitrox, Wreck Diving, PhotographySkill enhancement, specific dive environmentsExpand dive capabilities, explore new interests
Extended Range (XR)XR Nitrox Diver, XR SidemountTechnical diving, deeper/longer divesPush limits safely, access advanced dive sites
FreedivingBasic Freediver, Freediver Level 1Breath-hold diving techniques, relaxationExplore underwater without gear, improve breath control
Professional LevelsDive Guide, Divemaster, InstructorLeadership, teaching, dive supervisionCareer opportunities, mentor new divers

6Common misconceptions

Myth: SSI certifications are less recognised than PADI. Fact: Both SSI and PADI are global leaders in diver education, and their certifications are equally recognised and accepted at dive centres, resorts, and liveaboards worldwide. Both agencies adhere to international ISO standards for diver training.

Myth: SSI is only for beginners. Fact: While SSI offers excellent entry-level courses, it provides a comprehensive pathway for divers to advance their skills, including a wide range of specialty courses, Extended Range (technical diving) programmes, freediving certifications, and professional-level training up to Instructor Trainer.

Myth: SSI requires more complex gear. Fact: The gear requirements for SSI recreational courses are standard across the industry: mask, fins, snorkel, BCD, regulator, wetsuit, and dive computer. There are no proprietary gear requirements for basic SSI courses.

Myth: All SSI training is done online. Fact: While SSI offers extensive digital learning platforms for academics, hands-on, in-water training is a core component of every SSI certification. Practical confined water and open water sessions with an instructor are mandatory to earn any certification.

FAQ

What does SSI stand for?

SSI stands for Scuba Schools International. It is one of the world's leading and largest training agencies for recreational and professional scuba diving, freediving, and extended range diving.

Is an SSI certification globally recognised?

Yes, an SSI certification is globally recognised and accepted by dive operators, resorts, and liveaboards in over 120 countries worldwide. SSI adheres to international ISO standards for diver training, ensuring consistent quality.

Can I do SSI courses on a liveaboard?

Many liveaboards offer SSI courses, especially specialty certifications like Nitrox, Deep Diving, or Photography, which can be completed during your trip. Some larger liveaboards may even have SSI instructors onboard to facilitate this training.

What is the SSI teaching philosophy?

SSI's teaching philosophy, 'Comfort through Repetition,' focuses on mastering skills at an individual pace, ensuring divers are confident and proficient before advancing. This practical, hands-on approach builds strong foundational skills.

Does SSI offer professional training?

Yes, SSI offers a full range of professional training programmes, including Dive Guide, Divemaster, Assistant Instructor, and Open Water Instructor, leading up to Instructor Trainer levels. These certifications prepare individuals for careers in the dive industry.

How do I get an SSI certification card?

Upon successful completion of all course requirements, your SSI Instructor will process your certification. You will then receive a digital certification card via the MySSI app, which serves as your official proof of certification.

See also

Plan your trip

Ready to explore the underwater world?

Find liveaboards that take you to the world's best dive sites.