- What "Training" Actually Means for This Credential
- The Qualification Pathway: Days, Dives, and Documented Time
- The 625-Hour Instructional Route
- Exam Format, Content Focus, and the Standards It Draws From
- Fees, Applications, and Renewal Logistics
- Nitrox Endorsement and Other Scope Limits
- A Training Timeline That Matches the Requirements
- Who Hires Air Diving Supervisors
- Don't Confuse This With Other Supervisor Schemes
- FAQ
- Training builds on 200 field days, 50 working dives, and 30 days as Assistant Supervisor as an Air Diver.
- The standard route runs 625 hours of formal instruction or a recognized equivalent, plus qualified commercial-diver training.
- The exam itself costs $275, covering the examination and certification card, but it does not replace experience requirements.
- Content is drawn from International Consensus Standards, edition 6.5, 2025-1, section 3.4, on supervisor duties and readiness.
What "Training" Actually Means for This Credential
When people search for Air Diving Supervisor training, they're often picturing a single course they can enroll in and finish in a weekend. That's not how the Association of Diving Contractors International (ADCI) structures this classification. Training for the Surface-Supplied Air Diving Supervisor role is really a combination of three things: formal instructional hours, verified field experience as a working Air Diver, and time spent functioning as an Assistant Supervisor before you ever sit for the certification exam. The exam checks whether that accumulated knowledge and experience translates into sound judgment under section 3.4 of the International Consensus Standards - not whether you crammed a manual the night before.
If you're mapping out a plan, it helps to first understand exactly what the credential covers and how it fits into the commercial diving career ladder. Our companion piece on what the Air Diving Supervisor classification is is a good starting point if you're still confirming this is the right target for your career stage.
The Qualification Pathway: Days, Dives, and Documented Time
Before the ADCI will let a candidate sit the online Air Diving Supervisor Certification Examination, the person must be able to document:
- At least 200 field days working as an Air Diver
- At least 50 working dives completed as an Air Diver
- At least 30 working days serving as an Assistant Supervisor
These aren't estimates or "recommended minimums" - they're the qualification baseline referenced in the ADCI's own program documentation, and they get checked against employer verification, experience logs, and written appointment records before the application is approved. This is why training for this credential looks less like studying for a test and more like accumulating a career record. If you want the full breakdown of every prerequisite, including medical-fitness provisions and first aid/CPR currency, see our detailed Air Diving Supervisor requirements guide.
Documentation You'll Need Before You Can Even Apply
Candidates should build a paper trail well before they intend to test, because gathering it retroactively is far harder than logging it as you go.
- Employer-signed verification of field days and dive counts
- Written appointment records showing Assistant Supervisor duty periods
- Current first aid/CPR certification
- Medical-fitness documentation as applicable to the diving contractor's program
The 625-Hour Instructional Route
Layered on top of the field-experience requirement is a formal instructional component. The standard training route calls for 625 hours of formal instruction, or a recognized equivalent, built on a foundation of qualified commercial-diver training and demonstrated Air Diver competence. In practice, this means the "training" most candidates need isn't a standalone supervisor crash course - it's the accumulated instructional hours from their original commercial diver training program, combined with any additional supervisory-focused instruction their employer or training provider offers.
This structure is deliberate. A person can be an excellent diver without yet having the judgment to run a dive station, manage a crew, or make the call to abort a job for safety reasons. The instructional hours and the Assistant Supervisor time are meant to close that gap before the exam even enters the picture.
Key Takeaway
Track your instructional hours the same way you track field days and dives. If your original commercial-diver training program didn't total 625 hours, ask your training provider whether a recognized equivalent applies to your situation before assuming you qualify.
Exam Format, Content Focus, and the Standards It Draws From
The certification exam itself is administered online. It is not a substitute for the training and experience requirements above - passing it confirms knowledge, but the ADCI is explicit that it does not waive the field-day, dive, or Assistant Supervisor requirements. Content is drawn from the International Consensus Standards, edition 6.5, 2025-1, specifically section 3.4, which addresses the practical responsibilities of the role:
Supervisor Duties
Understanding the scope of authority and responsibility a Surface-Supplied Air Diving Supervisor holds on a job site, including sign-off responsibilities and chain-of-command decisions.
- Know when supervisory authority overrides schedule or client pressure
Dive Planning
Building a dive plan that accounts for depth, bottom time, gas supply, and contingency scenarios before divers enter the water.
- Be able to justify a plan against the standards, not just against habit
Job Hazard Analysis
Identifying site-specific hazards - current, visibility, entanglement, vessel traffic, contamination - and documenting mitigations before work begins.
- Practice writing hazard analyses, not just reading examples
Crew and Equipment Readiness
Confirming that divers, tenders, and standby personnel are fit for duty and that surface-supplied equipment, umbilicals, and communications are inspected and functional.
- Know the pre-dive checklist sequence cold
Emergency Preparation and Records
Having emergency procedures rehearsed and accessible, and maintaining the logs and records that prove a job was run to standard.
- Recordkeeping failures are as serious as procedural failures on the exam
For a full walkthrough of how these areas are weighted and tested, our exam domains guide goes deeper into question style and content areas. If you're trying to gauge how tough this exam actually is relative to your existing dive experience, the difficulty guide is worth reading before you schedule anything.
Fees, Applications, and Renewal Logistics
The published exam fee is $275, and that amount covers both the examination itself and the certification card issued upon passing. That's the only fee figure tied to this specific ADCI credential - don't let outside sources or similarly-named programs confuse you on cost.
Once earned, the certification is valid for five years. Applications and renewals are processed through Skill N Depth, so keep your contact and employer information current with them rather than assuming automatic renewal. For the complete cost picture, including how the fee compares to the time investment in field days and instructional hours, see our certification cost breakdown.
| Requirement | Detail |
|---|---|
| Field days as Air Diver | 200 minimum |
| Working dives as Air Diver | 50 minimum |
| Days as Assistant Supervisor | 30 minimum |
| Formal instruction | 625 hours or recognized equivalent |
| Exam fee | $275 (includes exam and certification card) |
| Certification validity | 5 years, renewed through Skill N Depth |
Nitrox Endorsement and Other Scope Limits
The Air Diving Supervisor certification covers surface-supplied air diving operations. It does not automatically authorize nitrox supervision - that requires the applicable separate endorsement, applied for and documented on its own track. If your work involves mixed-gas or enriched-air operations, plan for that endorsement as a distinct training and application step, not something bundled into the base credential.
A Training Timeline That Matches the Requirements
Because eligibility depends on accumulated field time as much as knowledge, a useful preparation timeline looks different from a typical exam-cram schedule. Rather than compressing everything into a few weeks, structure your final run-up around confirming documentation and reinforcing the standards content once your field-day, dive, and Assistant Supervisor time is already satisfied.
Documentation Audit
- Confirm employer sign-offs on field days, dive counts, and Assistant Supervisor periods
- Verify first aid/CPR currency and any medical-fitness paperwork
Standards Deep Dive
- Work through section 3.4 of the International Consensus Standards, edition 6.5, 2025-1
- Focus on dive planning and job hazard analysis language and terminology
Scenario Practice
- Run through crew and equipment readiness checklists from memory
- Rehearse emergency preparation sequences and recordkeeping expectations
Application and Exam Scheduling
- Submit application materials through Skill N Depth
- Confirm exam logistics and review any weak content areas one final time
If you want a condensed reference for the final week before test day, our one-page cheat sheet consolidates the must-know facts without the narrative padding. And if you're still deciding whether to commit the field time and fee at all, the ROI analysis lays out the trade-offs honestly.
Who Hires Air Diving Supervisors
Commercial diving contractors that perform surface-supplied air diving operations are the primary employers looking for this classification - think offshore support, inland/inshore construction, salvage, and inspection work where surface-supplied air (rather than saturation or mixed-gas diving) is the standard method. Supervisors are the ones held accountable for job planning, hazard analysis, and crew readiness on site, so contractors treat the certification as a baseline hiring filter rather than a bonus credential. For a broader look at how this certification opens up supervisory roles, our jobs overview covers typical role expectations after certification.
Don't Confuse This With Other Supervisor Schemes
Commercial diving has several supervisor credentialing paths, and it's easy to mix them up when you're searching online. The ADCI's Air Diving Supervisor classification is distinct from IMCA supervisor competence schemes and from UK ADC (Association of Diving Contractors, UK) supervisor pathways. Each has its own experience thresholds, exam structure, and issuing body. If your career plan involves working under multiple regulatory regimes, keep your preparation for each track separate - don't assume hours, fees, or requirements carry over between them.
To keep your own preparation grounded in the correct facts for this specific credential, review our explainer on what the acronym and classification actually mean and cross-check it against the ADCI's own published standards documents whenever you're unsure.
Frequently Asked Questions
No. The pathway explicitly builds on qualified commercial-diver training and documented Air Diver competence - it assumes you already hold the field days, working dives, and Assistant Supervisor time before you attempt the exam.
No. Passing the ADCI Air Diving Supervisor Certification Examination does not replace the training and experience requirements, including the 200 field days, 50 working dives, and 30 Assistant Supervisor days.
It covers the examination itself and the certification card issued upon passing. It does not cover the underlying training hours or field-experience requirements you must already have completed.
Five years. Applications and renewals are handled through Skill N Depth, so keep your records and contact details current with them as your renewal window approaches.
Yes. Nitrox supervision requires the applicable separate endorsement; the base Air Diving Supervisor certification covers surface-supplied air operations only.