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IMCA TADS and ADS exam prep

From diver to dive supervisor.

TADS is the IMCA Trainee Air Diving Supervisor course. The ADS is the final IMCA Air Diving Supervisor exam. TADSprep gets you ready for both, then stays with you offshore as your reference manual.

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The path

From deck to dive control.

TADSprep covers every step, from the classroom to dive control.

A dive supervisor with a headset at the dive control panel
  1. 1

    TADS course

    Trainee Air Diving Supervisor. Learn the theory: physics, physiology, gas, chambers, emergencies and IMCA rules.

  2. 2

    Trainee time offshore

    Supervise real dives under a qualified supervisor. Build the experience and get it signed off.

  3. 3

    IMCA ADS exam

    The final Air Diving Supervisor exam. Physics, physiology and working practices, against the clock.

  4. 4

    Supervisor offshore

    In the chair. TADSprep stays with you as the reference manual for every dive.

What TADSprep is

Supervisor theory, made simple.

TADSprep is an online study platform for divers stepping up to supervise. It covers the theory for the TADS course and the ADS exam: gas laws, gas planning, physiology, chambers, emergency plans, DP and the IMCA rules that hold it all together. Study on your phone, offshore or at home.

Lessons that talk you through it

One idea at a time. Animated diagrams with a voice-over, so a hard topic makes sense the first time.

Worked sums, step by step

Every gas and pressure sum laid out one line at a time. Same units and formulas as the IMCA documents.

Practice tests that mark you

One question per screen. Scored straight away, with the working shown for every answer.

Inside the lessons
The TADSprep study system

Three parts. One loop.

Lessons, practice tests and flashcards use the same module numbers. Each part feeds the other two. It is a loop, not a line.

A diver in a harness getting dressed in for a dive01
Lessons

Learn it

Short lessons in a clear order. Understand why the sum works before you drill it. Diagrams, worked examples and a quick check at the end of each one.

Why it works. You cannot recall what you never took in.

A dive supervisor in a hard hat talking on a radio beside the dive panel, with the sea behind02
Practice tests

Drill it

Close the book and answer exam-style questions. The first run is not a test. It is a diagnostic that shows exactly where the gaps are.

Why it works. Pulling an answer out of memory builds recall. Re-reading does not.

A diver in a helmet in the water beside a platform03
Flashcards

Lock it in

Drill the gaps the tests found. Fixed values, formulas and IMCA rules in short sessions, right up to exam day. Nothing new here, just cementing what is already in.

Why it works. Spaced reps move it from short-term to long-term memory.

Learn it → Drill it → Lock it in → Next module

After the exam

Your offshore reference manual.

Passing is not the end. In dive control the question comes up mid-shift, and the answer has to be right. TADSprep is the manual on your phone.

Every topic, one place

Lessons, formulas and fixed values, quick to find on a phone in dive control.

Calculators that show the working

Gas, depth and time sums worked out line by line, so the answer can be checked.

IMCA rules, plain and clear

The guidance a supervisor works to, explained in plain words.

Kept up to date

Updated when IMCA guidance changes, so you stay current on every rotation.

How the loop runs

Same module, three passes.

This is not the syllabus three times. It is one module three ways, then on to the next.

1

First pass

One module, all the way through. Slow, with gaps everywhere. That is normal. Finding the gaps is the point.

2

Second pass

Same module, a few days later. Quicker. The weak spots shrink and the guessing stops.

3

Third pass

Each lap runs faster. The sums start to come without thinking, which is what the exam clock needs.

↻

Round again

Run it across a rotation, not one weekend cram. Twenty minutes on a weather day still counts.

What fails

  • Reading the manuals cover to cover, none of it sticks
  • Old papers memorised by the shape of the answer
  • Gas sums learned once, forgotten by the course
  • A panic cram the night before

What TADSprep does

  • One module at a time, in short sessions
  • Tests answered under exam conditions
  • Flashcards spaced across the rotation
  • Same module numbers all the way through
What it covers

The theory a supervisor needs.

Built around the TADS syllabus in IMCA D 071 and the diving physics in IMCA D 022.

Diving physics Gas laws and gas planning Diving physiology Decompression Chambers Gas handling Nitrox Surface-supplied air diving Emergency and contingency plans Dynamic positioning Diving vessels Personnel and planning Documentation and MOC Communication Environmental conditions IMCA guidance
Who builds it

Built by a diver, for divers.

Sean Fraenkel in coveralls and a headset at a desk in dive controlSean Fraenkel

Sean Fraenkel

Air and Saturation Diver · 25+ years offshore · TADS · CSWIP 3.4u · Founder of NDTPrep

Why I built this

“TADSprep runs on the same study system I built for NDTPrep, to help divers pass their CSWIP inspection exams. Learn it, drill it, lock it in.

When my own TADS course came up, I used that system to study for it, and I passed. Now I am using it to get ready for the final IMCA Air Diving Supervisor exam.

TADSprep is that system, opened up to every diver on the same path.”

Built by a diver, for divers.

Early access

Be first in the water.

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Watch your inbox. The early-access email comes from support@tadsprep.com.