ADAS Part four CLOsed bell (saturation) diver






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2024 ADAS Diving and Supervisor Course Dates are online!

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The ADAS Part 4 Closed Bell (Saturation Diving) Certificate is the natural next progression for a Part 3 Diver. It is the highest level of qualification offered by ADAS and if the final stepping stone in become a fully fledged commercial diver.

CDA has a saturation barge with diving capabilities of 100 meters + at Lake Cethana. This course duration is approx. 21 days where students will be introduced to saturation equipment and trained in closed bell diving and chamber complexes. The student will also complete one dive at approximately 100 meters.

Closed Bell Diving is the most advanced of all commercial diving, it is a diving technique that allows divers to reduce the risk of decompression sickness when working at great depths for long periods of time. Closed bell diving involves working and living in a pressurised environment either on land or underwater.

Successful completion of this course results in the following qualification: ADAS and IMCA Closed Bell to 300M certificate

More information re: unit standards, course competencies & prerequisites can be found below, or on the ADAS website: Click Here

Why Train with CDA:

Who is the course for?

Saturation divers descend to the very depths of the ocean in pressurised chambers known commonly as closed bells. They can spend up to four weeks at a time working on roles such as surveying, construction, maintenance and repair of Oil and Gas pipelines and infrastructure. They also work on many other projects such as salvage, rescue, and repairs of ships.

The course is for the individual who loves an exciting and very well-paid career.

Job Opportunities

Graduates of this course will be qualified to work in the construction diving industry to a maximum of 300 meters.

Due to the high level of training and qualifications needed to become a saturation diver. Divers who have successfully graduated from CDA with an ADAS Part Four Certificate (saturation diving) in Closed Bell Diving are in hot demand for high paying jobs, primarily offshore in the oil and gas sector.

Beyond a Saturation Diving Career, divers can aspire to become supervisors, superintendents or client reps. CDA Prides itself on its 100% Employment rate for 2018, 2019 and 2020. 

We will help in any way we can to aid in the employment process of a graduated student.

IMCA Recognition and International Acceptance

Our saturation diving course is run by international instructors with experience in deep sea saturation diving and saturation supervision.

The ADAS part four course is fully IMCA accredited and Is recognised as equivalent to the British HSE Closed Bell Diving Course, The Canadian DCBC Category three diver and Closed Bell course, The French INPP Classe 3 mention A Closed Bell course, The Netherlands Duikarbeid Categorie C Closed Bell Course, The Norway PSA Bell diver certificate, The Spanish Buceador Profsional de Gran Profundidad a Saturicon Closed Bell course and the Swedish Certifikat C Closed Bell course.

With the ADAS Closed Bell saturation diving certificate IMCA will allow you to dive up to 300 Metres as a saturation diver.

Student Pre-Requisites

Hold a current ADAS Part 3 diving qualification or approved equivalent for a minimum of 12 months. The date that the applicant obtained their Part 3 Certificate or recognised equivalent must be recorded on the application form submitted to CDA for the Part 4 Certificate.

Students must have completed (in no less than 12 months and no more than 60 months) at least 100 Logged dives, 100 hours working working as either a Part 2 or Part 3 diver, recorded in a formal divers daily log book certified by a qualified ADAS supervisor

Before we can allow anyone to dive, they must hold an occupational dive medical. I am sure you have AS/NZS 2299.1 memorised now, and you guessed right. your medical, needs to be in accordance with this standard.
Because of this, the doctor who assesses you for medical fitness is required to be trained in hyperbaric medicine and certified as an occupational diving doctor.

you can find dive doctors using the SPUMS website below

You can learn more about Commercial Dive Medicals by clicking here.

Hold either a recognised current Diver Medic Technician certificate or a current First Aid certificate from an accredited training organization (i.e. has been certified within 3 years of the conclusion of the proposed training program) and CPR and oxygen resuscitation skills must have been refreshed within the 12 month period prior to the conclusion of the training program. The student’s First Aid qualifications must meet the competency requirements of AS/NZS 2299.1 Occupational diving operations standard operational practice.

Click here to learn more about Diver first aid and Diver oxygen administration courses.

Units of Competency

  • BSBWHS211 Contribute to health and safety of self and others
  • NAT11006001 Work safely in hyperbaric operations
  • NAT11006002 Maintain effective working relationships within dive or hyperbaric operations team
  • NAT11006021 Carry out pre-dive preparations and post-dive checks in closed bell diving operations
  • NAT11006022 Undertake underwater deployment in closed bell diving operations
  • NAT11006023 Implement emergency procedures in closed bell diving operations
  • NAT11006025 Work safely in closed bell diving operations
  • NAT11006065 Apply knowledge of basic physics, anatomy, physiology and psychology to hyperbaric work
  • NAT11006074 Prepare to work safely in offshore diving operations
  • NAT11006076 Apply first aid within a chamber and bell
  • NAT11006077 Complete closed bell and chamber surface procedures
  • NAT11006078 Maintain effective working relationships in closed bell diving operations

Watch: CDA Students peform a lockout

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Watch: bbc documentary on saturation diving

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