The first step into technical diving. Extended Range Foundations is a confined water equipment certification that introduces back-mount twins, technical trim, valve shutdown drills, and decompression theory. All sessions are conducted in the pool or sheltered confined water before you progress to full XR courses.
SSI XR Extended Range Foundations is an equipment certification course for divers ready to enter the SSI XR Extended Range programme. Designed for certified Open Water Divers with at least 24 logged dives, Foundations is conducted entirely in confined water. All sessions take place in the pool or a sheltered, shallow environment.
The course teaches you to configure and operate back-mount twin cylinders, achieve the precision buoyancy and horizontal trim that technical diving demands, and work through the fundamentals of decompression theory. This is not an open water certification to 40m. It is a prerequisite equipment qualification that unlocks entry into full XR courses such as Extended Range Nitrox, Sidemount, and Wreck Diving.

Equipment certification: confined water pool course. Prerequisite for entry into all SSI XR Extended Range specialties.
XR Foundations is an equipment prerequisite. After completing this course you are qualified to enrol in all entry-level SSI XR specialties.
All XR Foundations sessions take place in a pool or sheltered confined water. There are no open water dives on this course. You exit with an equipment certification that qualifies you to enrol in the full SSI XR Extended Range specialties.
The course opens with SSI XR eLearning modules covering decompression theory, gas management principles, and tec dive planning. In the pool you configure twin cylinders for the first time with instructor guidance, establish harness fit, and practise valve identification.
Underwater drills in the pool. You practise the valve shutdown and isolation sequence required on all XR courses, and switch between primary and secondary regulators while maintaining position and trim.
Final confined water session. You demonstrate horizontal trim and precision neutral buoyancy in full tec configuration for the certification sign-off. On successful completion, your SSI XR Extended Range Foundations digital card is issued immediately.
Foundations uses back-mount twin cylinders and a tec harness throughout. This is the configuration you will carry into every subsequent XR course, so getting comfortable with it is part of the programme. All equipment is subject to a mandatory check before the first session.
Full technical equipment hire is available from diveshack. Contact us before booking to confirm availability and sizing. Air and nitrox fills are included in the course fee. No trimix is required for this course.
Lifetime access to SSI XR Extended Range Foundations digital study materials. Complete theory at your own pace before arriving in Malta.
Air and nitrox fills for all confined water sessions. Gas is analysed and confirmed before every session.
All sessions conducted in the pool or sheltered confined water. No open water dives are included in this course.
SSI XR Extended Range Foundations certification card issued on successful completion of the confined water assessment.
Not included: Equipment hire if you do not own a full tec configuration (available from diveshack). DAN dive accident insurance is strongly recommended. Pool/confined water site fee if applicable.
Extended Range Foundations is the most accessible entry point in the SSI XR programme. You do not need any prior technical diving experience, just a current Open Water Diver certification and 24 logged dives.
Completing Foundations unlocks three direct next steps: Extended Range Nitrox Diving (add nitrox gas planning), Extended Range Sidemount Diving (sidemount configuration), and Extended Range Wreck Diving (penetration diving with tec equipment). From there the full SSI XR Extended Range programme is open to you.
Enquire about the full XR pathway →Price on application. Contact us to confirm dates and equipment requirements.
Combine Foundations with Extended Range Nitrox Diving in a back-to-back programme. Enquire for combo pricing.
Deposit required on booking · Equipment hire additional if required · See cancellation policy
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