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Clearance Diver (RAN)

Royal Australian Navy

RAN Clearance Diver — conducts underwater EOD, mine countermeasures, and special operations diving; one of the most physically demanding qualifications in the ADF.

Clearance Diver is one of the most demanding qualifications in the ADF. The entry threshold is high and the course will remove people who had every expectation of completing it. That is its design. The RAN Clearance Diving Branch conducts underwater explosive ordnance disposal, search and recovery, ship husbandry diving, and special operations underwater reconnaissance. The AUSCDT (Australian Clearance Diving Teams) are headquartered at HMAS Waterhen in Sydney and HMAS Stirling in Perth. You will work in both locations across a career. The course — held at HMAS Penguin, Middle Head — is physically demanding from day one. The swimming requirements alone remove a significant proportion of candidates at the initial fitness assessment. What then follows involves extended periods of underwater work in conditions designed to stress candidates: cold water, poor visibility, equipment problems under pressure, and the sustained physical and mental demands of diving on compressed gas for extended periods. This is before you even get to the EOD component. What the role actually involves on a day-to-day basis: ship hull inspections (yes, you spend time scraping barnacles and checking propellers — it is what it is), underwater search in support of civilian authorities and the AFP, port security and counter-swimmer operations, and EOD on conventional and improvised devices in the maritime environment. The special operations component — maritime counter-terrorism support — exists and is trained for, but it is not the majority of the career. Manage expectations accordingly. The community is tight and the standards are permanent. A clearance diver who lets fitness slip is noticed immediately. The esprit de corps is real and earned.

Training

Clearance Diving Able Seaman course at HMAS Penguin, Middle Head, Sydney. Prerequisites include passing the Initial Fitness Assessment (IFA): timed swim (400m under specified time), treading water, underwater breath-holding, and physical fitness test. Course duration approximately 11 months, covering surface swimming, SCUBA, mixed gas diving, underwater EOD, ship husbandry, and special operations diving. Further qualifications include Explosive Ordnance Disposal (EOD), Underwater Demolition, and advanced diving medicine. Senior rates complete additional leadership and technical qualifications.

Day to Day

Physical training is the foundation: distance swimming, running, and pool work most mornings. Operational days involve pre-dive planning, equipment checks, dive execution, and detailed post-dive reporting. EOD tasks are methodical and precise — the checklist exists for a reason and no one skips it. Between operational commitments: diving equipment maintenance, explosive storage management, and continuation training. Diving-related fitness standards require daily attention throughout the career.

Career Path

Able Seaman Clearance Diver to Leading Seaman within two to three years; Petty Officer by year five to seven. Senior rates progress to warrant officer roles as Team Leaders and Technical Officers. The clearance diving career is relatively small — approximately 150 to 200 trained operators across both CDTs — which means individual performance is visible. Exchange opportunities exist with US Navy EOD, Royal Navy Fleet Diving Units, and NZDF Dive Specialists. Senior clearance divers move into ADF EOD training roles, defence safety authority positions, and civilian explosive ordnance disposal.

Civilian Skills

RAN Clearance Diver training provides direct qualifications for civilian commercial diving (ADAS Part 1, 2, 3, 4 pathway well-supported by military experience), professional underwater search and survey, and offshore inspection work. The EOD qualifications are recognised by Australian and international agencies in the civilian explosive sector. Commercial saturation diving, offshore oil and gas diving, and hydrographic survey are the premium civilian destinations. Clearance Diver experience is globally respected and commands premium rates in the commercial diving market.

Basic Training
Kapooka (Army) / recruit training
Role Classification
employment category (EMPL)
Recruiter vs. Reality
What the ADFRP says
  • →Clearance Divers are the RAN's special operations maritime force — EOD, underwater sabotage, hydrographic recon, special warfare support.
  • →One of the hardest selections in the ADF. Those who pass are part of an elite, tight community with a proud operational record.
  • →Diving quals earned in the RAN carry genuine civvy value in commercial and saturation diving post-service.
What it's actually like
  • —CD selection is deliberately savage. Dropout rates are high and successful candidates have usually had a crack before. "One of the hardest selections in the ADF" is fair dinkum, not the brochure talking itself up. The standard's maintained right through the pipeline, not just at the start gate.
  • —The CD community is small — properly small. That gets you genuine tight bonds and a real professional culture; it also caps your career options at the senior end. The civvy diving transition is real if you build the right tickets alongside service. Offshore construction and saturation diving certifications aren't auto-included with the green beret.
  • —Career-long Clearance Diver health is its own conversation. Decompression incidents, cumulative nitrogen loading, musculoskeletal damage from kit and training loads, blast exposure on EOD work — all documented occupational realities. Have the long-term health chat with your family before committing to the pathway, because the DVA claims register tells you what the long tail looks like.
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Royal Australian Navy
Clearance Diver (RAN)
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Clearance Diver (RAN) (Royal Australian Navy) — Frequently Asked Questions

Q01Is Clearance Diver (RAN) in the Royal Australian Navy (Australia) worth it?
Recruiter messaging emphasizes: Clearance Divers are the RAN's special operations maritime force — EOD, underwater sabotage, hydrographic recon, special warfare support.. One of the hardest selections in the ADF. Those who pass are part of an elite, tight community with a proud operational record.. However, service member accounts indicate: CD selection is deliberately savage. Dropout rates are high and successful candidates have usually had a crack before. "One of the hardest selections in the ADF" is fair dinkum, not the brochure talking itself up. The standard's maintained right through the pipeline, not just at the start gate.. The CD community is small — properly small. That gets you genuine tight bonds and a real professional culture; it also caps your career options at the senior end. The civvy diving transition is real if you build the right tickets alongside service. Offshore construction and saturation diving certifications aren't auto-included with the green beret.
Q02What does the Royal Australian Navy tell recruits about Clearance Diver (RAN)?
Clearance Divers are the RAN's special operations maritime force — EOD, underwater sabotage, hydrographic recon, special warfare support. One of the hardest selections in the ADF. Those who pass are part of an elite, tight community with a proud operational record. Diving quals earned in the RAN carry genuine civvy value in commercial and saturation diving post-service.
Q03What is Clearance Diver (RAN) in Australia actually like according to veterans?
CD selection is deliberately savage. Dropout rates are high and successful candidates have usually had a crack before. "One of the hardest selections in the ADF" is fair dinkum, not the brochure talking itself up. The standard's maintained right through the pipeline, not just at the start gate. The CD community is small — properly small. That gets you genuine tight bonds and a real professional culture; it also caps your career options at the senior end. The civvy diving transition is real if you build the right tickets alongside service. Offshore construction and saturation diving certifications aren't auto-included with the green beret. Career-long Clearance Diver health is its own conversation. Decompression incidents, cumulative nitrogen loading, musculoskeletal damage from kit and training loads, blast exposure on EOD work — all documented occupational realities. Have the long-term health chat with your family before committing to the pathway, because the DVA claims register tells you what the long tail looks like.
Q04What does a Clearance Diver (RAN) do in the Royal Australian Navy?
RAN Clearance Diver — conducts underwater EOD, mine countermeasures, and special operations diving; one of the most physically demanding qualifications in the ADF.
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Do not disclose OFFICIAL: Sensitive, PROTECTED, SECRET, or TOP SECRET information. AUSTEO (Australian Eyes Only) material is strictly off-limits. Sharing your honest service experience does not compromise national security.

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