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Commercial Diver Training

Commercial Diver Training Courses

View our list of available Diver Courses


The image of the commercial diver is one of excitement, jetting around the world for ten to fifteen years, earning enormous salaries (and spending it just as fast!) before retiring in his late thirties to a life of luxury. The truth is that only a few divers fit this image. Most are hard working and in a career they love. Today's commercial divers are far removed from those of the early days when oil was first discovered in the North Sea.

To start with, every commercial (professional) diver must have a "diving license" before he can be employed. The "licence" recognised as the world standard was originally issued by the UK Health & Safety Executive (a Government body in London). The "licence" can only be obtained by successfully completing a tough training course at an approved school.

Courses are expensive as they are "high-tech", last for several weeks and require sophisticated diving equipment, surface and underwater tools as well as decompression chambers, medical equipment and experienced instructional staff.

Before investing into such a career, you are required to take a "Diving Aptitude Test". This allows us to see if you are suitable for such training and allows you to "get the feel of it". If you pass, you will be accepted for one of the most prestigious training courses in the world. Your whole future will change from the moment you commence training. Once you have learnt the necessary skills of a commercial diver you will be ready for the "real world". Learning does not stop in the lecture room or on the work site - it continues until you retire!

The offshore environment for the commercial diver can be a dangerous place for the poorly trained, but at Interdive we pride ourselves on the best trained divers in the world. There are Interdive trained Divers, Medics, Supervisors and Life Support Technicians working all over the world today – and proud of it.

Our reputation is well known and will give you the best possible start in your new career.

Diving operations offshore may be running around the clock so you may well find yourself called to dive at 3.00 am in mid-winter from a D.P. diving support vessel in the middle of the North Sea for a job which may call upon all your skill and stamina for three hours. After that you may need to work "on deck" for several more hours. Then is not the time to realise you have not had proper training - you are working as a team and therefore others depend on you and you on them. The whole vessel, rig, platform or work site may be waiting on you to complete your underwater task. All eyes are watching and waiting - that is a great responsibility.


Commercial Diver Training

There are currently several "Internationally accepted" certificates for commercial diver training most of which are based on the original UK HSE Diver Training Standards. The most common are recognised by the International Marine Contractors Association (IMCA) whose members adhere to a Code of Practice which includes only employing personnel with recognised training qualifications.

Entry Requirements

In order to apply for the course, you must:-

1. Be competent to undertake the course.

2. Hold a valid certificate of medical fitness to dive, after examination, by a doctor approved by the HSE (or equivalent). These can be arranged through our office.

3. Be a competent swimmer.

4. Be able to add, subtract, multiply and divide whole numbers, decimals and fractions; calculate percentages; and transpose and solve simple formulae e.g. Gas Laws.

5. Be able to understand and make written & verbal communications and communicate easily with others. This is particularly important where trainees are of different nationalities.

6. Be willing/able to work as part of a team.


Some countries diving regulations require commercial divers to hold an in-date First Aid Training Certificate in addition to a recognised diver training certificate. Our First Aid course is internationally accepted. Candidates taking our IDSA Diver Training Course receive the first aid training free of charge. Please click on the "Medical Courses" tab for information on our First Aid & Medical Courses.

If you are still not convinced INTERDIVE is the training school to take your course with, then please call us on + 44 (0)1752 55 80 80 and have a chat. If I'm out, I will call you back A.S.A.P. - try Interdive first, you will not regret it!

If you are planning a career in the exciting world of commercial diving, INTERDIVE can also offer you a full range of follow up courses including higher medical or first aid training, underwater inspection, supervision, leadership and life support as well as the highly paid Closed Bell/Mixed Gas diver qualification.

Finally, may I wish you good luck, and if any of your colleagues are similarly interested, please click on the “Tell a friend” tab opposite, r better still, ask them to give me a call!

Commercial diving is a tough but rewarding life requiring stamina, common sense, motivation and plain hard work.


IDSA Courses

These courses are pending approval from IDSA.

The IDSA Certification scheme allows for a Modularised training programme. In other words, you can progress through the scheme, adding Modules and higher qualifications, as the need arises according to your job opportunities and aspirations.

Module Type
Diving principles and theory common to both SCUBA and Surface Supply. Must be combined with either the SCUBA or Standard Surface Supply Modules.
Theory only
Training and assessment in the use of SCUBA and simple work tasks
CSurface Supply
Training and assessment in the use of Surface Orientated Air Diving Equipment and common inland/inshore work tasks
DSurface Supply (Offshore Top Up)
Training and assessment in air diving operations using an open (wet) bell acting as Bellman and Diver and/or using a Hot Water suit.
EClosed Bell/Mixed Gas
Training and assessment in the use and operation of a closed bell - acting as Bellman and Diver using the appropriate breathing gas mixture

Module Type
A*Preparatory 2 Weeks
CSurface Supply6 Weeks
DSurface Supply (Offshore Top Up)1 Week
EClosed Bell/Mixed Gas3 Weeks

NOTE 1: Module A must be completed BEFORE any other combined with either SCUBA or Surface Supply Modules.

NOTE 2: Module E cannot be undertaken without having completed Modules A, B, C and D plus logged Offshore Air Diving experience required.

Please click on the commercial diver training course links below to see more information about each type of diving course

Conversion Courses

The Modular scheme described above allows for conversion to a higher grade. Please contact our office giving details of your current qualifications and what qualification you are seeking. We will then be able to advise which Modules you are eligible to undertake.

Offshore Survival Training

All personnel (not only divers) working offshore are required to have an in-date certificate of training in fire-fighting and offshore survival. Approved course information is available here on our website (just click on the “Useful Resources” tab on the left hand side of this page).

Employment Prospects

Our centre is part of the Interdive group with over 30 years experience in commercial diving operations. We are highly regarded in the oil industry and by the major diving contractors and therefore our successful students have a head start for employment.

Frequently asked questions;


In order to apply for a course place, please read the conditions of booking, then complete the application form and send on-line. You can arrange payment either on-line or by telephone by credit card or by posting payment by cheque or direct bank transfer etc .

We will confirm your booking by return. Course joining instructions will be sent prior to the start date. Please note course places are only guaranteed once the course fee has been received. Until this time we cannot hold places.

Courses are in great demand so please book as early as possible to avoid disappointment. All payments are refundable in accordance with our "Conditions of booking" before the course start date, or at any time if cancelled by us.

Diver Training Courses:

Course Title Duration
100 5 days
102 55 days
111 6 days
124 1 day
125 25 days
126 5 days
127 5 days
128 21 days
140 10 days
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