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The syllabus combines theoretical understanding with practical open water skills. While details may vary slightly by training centre, a typical Accelerated Decompression Procedures course includes:
Expect to complete at least two open water dives with staged decompression using EAN50 or Oxygen. Some centres may offer more depending on student performance and local conditions. All dives are conducted within no deeper than 40 m / 130 ft, unless combined with further technical training.
As always, course content may vary slightly by training centre. On adventuro, you can compare hundreds of diving courses, trips and gear rentals to find the right fit for your diving journey.
Completing the Accelerated Decompression Procedures course enables divers to conduct staged decompression dives using gas mixes with higher oxygen content than bottom gas – typically up to 100% Oxygen. This can significantly reduce decompression time when used correctly and within planned limits. You'll be trained to carry and manage at least one additional decompression gas safely, perform gas switches at depth, and follow multi-level ascent profiles with confidence.
This course forms part of the foundation of technical diving and opens the door to deeper dives, extended bottom times, and more advanced qualifications such as Trimix or Extended Range Diver. It’s ideal for divers looking to explore deeper wrecks, walls, or technical environments where decompression obligations are unavoidable. Most importantly, it reinforces risk assessment strategies and redundancy practices essential for safe diving in more complex situations. After certification, you’ll be qualified to join guided technical dives or continue progressing along the technical diving pathway.
The Accelerated Decompression Procedures course typically takes 2–3 days to complete. This includes classroom theory sessions, dive planning exercises, and at least two open water dives. Some training centres may offer this course as part of a modular technical diving pathway, so timescales may vary slightly.
Assessment for the Accelerated Decompression Procedures course, whether through BSAC or PSAI, is practical and performance-based. Divers are evaluated on their ability to plan and execute dives requiring staged decompression, using air, nitrox, and oxygen within safe operational limits. You'll demonstrate skills such as accurate gas-switching, awareness of decompression obligations, and managing emergency scenarios. Expect dive planning exercises, in-water drills, and scenario-based assessments under instructor supervision. Some theory exams or knowledge reviews may also be included, depending on the training centre. Adventuro lists centres that provide expert instruction and supportive coaching if you need extra time to master the skills.
Quick answers about this qualification. For anything else, use live chat or browse bookable activities below.
Find activitiesAccelerated decompression is a technique used by technical divers to reduce total decompression time by breathing higher oxygen mixes (like nitrox or pure oxygen) during decompression stops. It requires careful planning and training to stay within safe oxygen exposure limits. This course gives you the tools to do that safely.
You’ll learn how to plan and execute staged decompression dives using up to 100% oxygen, including gas switching, dive planning using decompression software, and managing emergencies at depth. Skills include buoyancy control, decompression stop discipline, and understanding oxygen toxicity risks.
Training dives typically go to a maximum of 40 to 50 metres, depending on the agency and local conditions. PSAI allows dives up to 50m with appropriate prerequisites. Always check the course limits with your chosen centre on Adventuro.
You need to be an experienced diver with a technical foundation. For BSAC, you must be a Sports Diver with depth progression or equivalent. PSAI requires completion of their Nitrox and Basic Decompression Procedures courses or equivalent certifications. Solid buoyancy and gas management skills are essential.
Yes. You’ll need a twinset or sidemount configuration, stage cylinders for decompression gases, and a dive computer capable of multi-gas support. Some centres offer gear rental or have equipment requirements listed—check the details when booking on Adventuro.
Technical diving carries more risk than recreational diving, but with proper training and adherence to procedures, it is very safe. The course teaches you to manage those risks through planning, redundancy, and controlled execution. Always dive within your limits and follow your training.
Most courses run over 3–4 days, including classroom sessions, dry runs, and several decompression dives. Some centres may offer it as part of a modular technical diving programme. Adventuro’s provider pages detail the duration and structure of each course.
No. This course prepares you for team diving using accelerated decompression procedures. Solo decompression diving requires additional training. You’ll learn to coordinate with a buddy or team, including gas checks, communication, and problem solving at depth.
It’s best to be actively diving and confident in advanced dive skills before starting. If you’ve been out of the water for a while, consider a technical refresher or skills tune-up before enrolling. Many centres on Adventuro offer prep dives to get you ready.
Adventuro works with experienced BSAC and PSAI centres across the UK and internationally. Each listing includes course details, equipment requirements, and booking options. Find a qualified centre near you and get started on your tech diving journey.