Extended range nitrox diving

SSI Extended Range Nitrox Diving

Jump the Gap Between Rec and Tech!

A splash of decompression theory, a dash of common sense, bucketload of practice covered with dive planning, and you got the XR Nitrox course!

This programme qualifies you to dive to 40 metres using nitrox and to do 15 minutes of decompression. Your deco gas can be anything up to 50% nitrox, but you cannot do acceleration on the stage gas. You will learn to plan your decos, and execute that plan while maintaining buoyancy and trim to the required standard.

The programme can be completed wearing your standard total diving system, a large cylinder with H or Y valve, a full twinset, or in sidemount configuration.

The longer bottom times you get from limited decompression will allow you to wander around the wrecks and deep parts of pinnacles - and the course prepares you for the Technical Extended Range courses!

  • Who can take this course?

    • Minimum age 18 years
    • Deep Diver specialty diver
    • Enriched air nitrox diver
    • 24 or more dives
    • Have a current medical examamination for scuba diving and signed medical questionnaire
    • by a licensed medical practitioner not older than 1 year old


  • Duration

    • 4 days
  • Price includes

    • 4 Open water training dives
    • Lifetime Online & Offline access to the digital training materials
    • Equipment rental (excluding required equipment)
    • All gases
    • digital certification
  • Course content

    • Basic diving knowledge review
    • Decompression theory
    • Technical diving procedures
    • Decompression planning and software
    • Equipment configuration workshop
    • Confined water training
    • 4 Open water training dives, (2 are real staged decompression dives)
  • Required equipment

    • 2 x Mask
    • Fins
    • 1 x dive computer and bottom timer (can be rented for 1.000 THB / day)
  • Online training

    Download the SSI appAll our XR courses include DIAMOND version

    • Lifetime Online & Offline access to the digital training materials
    • 2-year access to the Digital Divelog on the DiveSSI app
    • Downloadable to 3 different devicesDownload the SSI app

    Read more about SSI online training


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