The DOLPHIN SCR was designed to fit to the needs of the recreational rebreather diver by using fixed constant flow nozzles that can be easily exchanged depending on the gas mix chosen by the diver. A colour coding system makes it easy to avoid mistakes.

Despite this user-friendly approach, diving with the DOLPHIN SCR demands some new skills from the diver and presents potential new problems. The IART unit-specific user course, combined with the use of the course manual, will prepare you with the knowledge and skills needed to safely dive the Dolphin SCR within no-decompression limits to the maximum safe depth of the Nitrox premix used.

This course will prepare you to become a competent, disciplined and knowledgeable SCR diver who understands:

  • The physiological principles behind rebreather diving
  • The construction of the unit including assembly, disassembly, cleaning and maintenance
  • The possible dangers and potential mistakes
  • How to employ the best diving techniques with the unit
  • How to rescue another rebreather diver

Theory Presentation

  • Includes review of nitrox theory, physics and physiology
  • Familiarisation with all rebreather components including maintenance
  • Dive planning and execution and emergency procedures
  • IART rescue module
  • A written exam concludes the theoretical development.

Practical training

  • Unit preparation, pre-dive checks
  • Disassembly, cleaning and disinfection
  • Dive planning
  • Dive techniques in confined water followed by open water environments
  • Protocol in emergency situations
  • Proof of successful completion of all required training exercises.


  1. Course:
    Semi Closed Rebreather Diver Level 1(SCR Level I)
    No Stop gasses for the course are Nitrox 32 and 40
  2. Course objective:
    This course trains the participant in the skills, knowledge and techniques necessary for safe and responsible diving with the Draeger “Dolphin / Ray” semi closed rebreather within no-stop times and recreational depth limits. After successful completion the participant may purchase and/or dive a Draeger “Dolphin” or “Ray”
  3. Prerequisites:
    Minimum 50 logged dives, Advanced Open Water or equivalent qualification, Nitrox Diver certification and valid diving medical.
  4. Course content/duration:
    All theoretical and practical aspects of diving with the Draeger “Dolphin / Ray” as described in the IART manual. Course duration, after preparatory home-study of the manual, is generally 3 days. In addition to theory development, practical training in pool/confined water and in open water with not less than 240 minutes accumulated in-water time.
    The Instructor : student ratio must not exceed 1:2
  5. Support materials:
    IART SCR manual Level I, Air/Nitrox tables, NOAA exposure tables, IART flash-cards and IART Instructor presentation materials.
  6. Required equipment:
    complete diving equipment including slate, depth gauge/timer or dive computer.
  7. Limits:
    maximum depth for pool/confined water: 5m,
    open water dive 1: 10m,
    open water dives 2 -4: min. 20m – max 30m.
    Dive duration not to exceed OC Nitrox no-stop times.
  8. Dive skills:
    Training in all skills as described in the IART SCR Level 1 manual, in both confined and open water.
  9. Requirements for certification:
    After completion of all theory elements a written test must be undertaken. Following successful completion of all practical training, certification is documented by issue of certificate and PIC. In accordance with IART Quality Control, the student and Instructor are required to fill in the training protocol form. The instructor must retain this form with the student file.
  10. Certification:
    issued by IART HQ
  11. Certification renewal:
    not required
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