VIEW ALL COURSES
3 Weeks
29 Lockouts
300m Max. Depth
$35,000
The Commercial Dive Academy (CDA) is the world’s exclusive provider of the IMCA-recognized ADAS Part 4 Closed Bell (Saturation Diving) Certificate and the ADCI Bell/Sat Diver certification. Our elite saturation training facility sets the global benchmark, offering the definitive career progression for ADAS Part 3 certified divers and those with equivalent international credentials, such as IMCA class 2.
The CDA Edge: We are the only IMCA-accredited institution equipped with a Hyperbaric Rescue Chamber (HRC), providing hands-on training with this critical safety apparatus, a mandatory component of the IMCA saturation diver course.
Duration & Training: Our rigorous 21-day program immerses you in cutting-edge saturation diving practices. Train in our sophisticated closed bell systems and chamber complexes at Lake Cethana, featuring a saturation barge designed for dives reaching 100 meters. Engage in an authentic dive experience at this depth, equipping you for the rigors of deep-sea operations.
Advanced Diving Technique: Master the pinnacle of commercial diving with Closed Bell Diving, a specialized technique that drastically reduces decompression sickness risks. This method is vital for prolonged deep-water tasks, enabling you to operate and live within a pressurized environment, onshore or offshore.
Additional Qualifications: Broaden your skill set with our optional IMCA Diver Medic Technician (DMT) course, offered at a discounted rate for Part 4 enrolees. Graduates earn the esteemed ADAS & ADCI Part 4 Certificate along with an IMCA ALST Certificate, expanding your opportunities in the construction diving and oil & gas industries.
Career Prospects: As a CDA-certified saturation diver, you’re prepared for underwater construction work up to 300 meters and are a crucial member of any Closed Bell team. Our Life Support Technicians are pivotal in ensuring diver safety, overseeing decompression chambers and saturation systems, and upholding the highest standards of offshore operations.
Industry Demand: The comprehensive training and qualifications provided by CDA make our graduates highly coveted for premium offshore roles, especially within the oil and gas sector. We guarantee the completion of deep dives, a testament to our unwavering commitment to real-world preparedness.
Join the Elite: Opt for CDA for an unparalleled saturation diving education, where every step of your training is meticulously crafted for excellence. With CDA, you don’t just learn; you become a master of the depths.
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 all students since 2018.
We will help in any way we can to aid in the employment process of a graduated student.
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. The course is for the individual who loves an exciting and very well-paid career. 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.
ADAS Part Three ticket
- To enrol in our ADAS Part 4 (Closed Bell) course you must first have completed our ADAS Part 3 course (or international equivalent). Your tickets need to also be current. You must have held your ADAS Part 3 (or international equivalent) for at least 12 months at commencement of the ADAS Part 4 course.
Current Commercial Dive Medical
- Before we can allow anyone to dive, they must hold an occupational dive medical compliant to the Australian Standard (AS) 2299.1.
- 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: https://www.spums.org.au/
Current First Aid, CPR and Advanced Oxygen Resuscitation certificates or Diver Medic Technician (DMT) with Advanced Oxygen Resuscitation completed in the last 12 months.
- To meet the AS/NZS 2299.1 and ADAS requirements anyone who joins a course at CDA, or any other ADAS school is required to have a current first aid, 02 provider and CPR certification.
- In general, if the card has First Aid on it, and the course was about a day long, it is likely this will be accepted. Though if you are not sure if your First Aid ticket is accepted, you can contact us any time to find out.
- If you are completing your First Aid, CPR or O2 course in Australia, you can check if the units are acceptable by checking this table.
100 Dives, 100 Hours
- Students must have completed (in no less than 12 months) at least 100 logged dives, over a minimum of 100 hours working as a Part 3 diver, recorded in a formal divers daily log book certified by a qualified supervisor.
- Lake Cethana, Tasmania (dive site.)
- Unit 2, 36 Claude Road (classroom.)
The ADAS & ADCI saturation course is fully IMCA recognised and is recognised as equivalent to:
- HSE Closed Bell Diving Course (United Kingdom.)
- DCBC Category three diver and Closed Bell course (Canadian.)
- INPP Classe 3 mention A Closed Bell course (French.)
- Duikarbeid Categorie C Closed Bell Course (Dutch.)
- PSA Bell diver certificate (Norwegian.)
- DOL Class 1 Closed Bell Saturation Diver 100 metres plus (South African.)
Other non-equivalent mixed gas courses include:
- Buceador Profsional de Gran Profundidad a Saturicon Closed Bell course (Spanish.)
- Certifikat C Closed Bell course (Swedish.)
Course Schedule
| COURSE NAME | START DATE | END DATE | LOCATION | |
| ADAS Part 4 Tasmania Jan-2025 | 28-Jan-2025 | 17-Feb-2025 | Tasmania - Lake Cethana | |
| ADAS Part 4 Tasmania Feb-2025 | 21-Feb-2025 | 14-Mar-2025 | Tasmania - Lake Cethana | |
| ADAS Part 4 Tasmania Mar-2025 | 27-Mar-2025 | 17-Apr-2025 | Tasmania - Lake Cethana | |
| ADAS Part 4 Tasmania Apr-2025 | 28-Apr-2025 | 18-May-2025 | Tasmania - Lake Cethana | |
| ADAS Part 4 Tasmania July 2025 | 28-Jul-2025 | 17-Aug-2025 | Tasmania - Lake Cethana |
FAQs
The information you want to know
The ADAS Part Four (Closed Bell) course is fully accepted by IMCA and is recognised as equivalent to:
- British HSE Closed Bell Diving Course
- Canadian DCBC Category three diver and Closed Bell course
- The Netherlands Duikarbeid Categorie C Closed Bell Course
- Norway PSA Bell diver certificate
- Spanish Buceador Profesional de Gran Profundidad a Saturicon Closed Bell course
- Swedish Certifikat C Closed Bell course
- 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
No, course fees exclude accommodation and food, these are your responsibility. We are more than happy to provide you with a list of local accommodation providers.
Yes, we offer a pickup on the first day only for courses in Tasmania. Pick up can be either from Launceston Airport or from your accommodation in Launceston city if you arrive earlier. Please note that we do not offer daily transport during the course.
We cannot assist with visa applications, if you do need assistance we suggest contacting a visa agent in your home country. We can provide an acceptance letter once you have paid a deposit and secured a place on a course.
