Technical Diving              

Since 1953, the BSAC has been at the forefront of adventurous diving. As a BSAC Technical Centre, we offer the complete range of technical diver training including Technical Instructor Courses.

Accelerated Decompression Procedures Diver       Prices

The accelerated decompression course gets you started on your journey into 'technical' diving. You need to be Sports diver grade (or equivalent) and have gold standard buoyancy.  Using specially prepared tables, the course will concentrate on the use of 50% and 70%  nitrox mixes to shorten in water decompression and include the practical skills and theory needed to carry this out safely.  The depth range depends on your present qualifications.

Even if you want to stay within the normal recreational maximum depth range of 30 - 40 metres, this course will teach you many skills which will improve your diving safety, including decompression theory, good dive and decompression practice, an understanding of hoe to add safety to your diving profile and of course, how to accelerate your decompression  to get out of the water quicker (in safety).

Closed Circuit Rebreather (CCR) Air Diluent Course (Mod 1)

Using the APD Inspiration XPD or Evolution  CCR, this course covers all the theory, sheltered water exercises, practical workshops and dives needed to start diving this unit safely. You should allow 5 days for this course to cover all the elements. Minimum level of ADP or equivalent is needed and an open mind!

Starting to dive a rebreatheris almost like starting again.  Many of the skills are similar, but there are some new ones to learn. After the course we recommend a regime of build up dives to enhance and embed the new skills learned on the course

In return for your hard work, you gain extended dive times, less decompression, silent bubble free diving, getting closer to marine life and the positive effects of breathing a warm, moist gas.

Mixed Gas  Courses - Open Circuit or Closed Circuit Rebreather

There are a range of mixed gas courses available and we teach then all at Seaways Dive Centre.  The courses can be run for either Open Circuit divers or CCR rebreathers.  The CCR course contains open circuit skills as well, to cover ballout options.

Sports Mixed Gas - 50 metres  Normoxic                 1 stage cylinder

Explorer Mixed Gas - 60 metres - Normoxic              2 stage cylinders

Advanced Mixed Gas- 80 metres - Hypoxic             2 + stage cylinders

 For the mixed gas courses you need your own dive equipment including twin-set for open circuit divers and CCR for rebreather divers. Seaways can help with some stage cylinders if needed.  If you are considering any of these courses, talk to us first so that we can determine your present level and work out the best approach for you.  All our courses are done in the sea using suitable dive vessels diving real dive sites.

Mixed gas is used to make your deeper diving safer.  Even the Normoxic course for divers approaching the 40 metre range and thinking of going to 50 metres will greatly reduce narcosis and improve decision making.

As we go deeper, we need to reduce the amount of nitrogen to control narcosis and reduce the amount of oxygen to reduce the risk of oxygen toxicity. The lowest cost way of doing this is to use a mixture of Oxygen, Helium and Nitrogen.  Here at Seaways, your course will include all the relevant theory and practical skills to get you ready for your new adventure.

Compressor Operator

How do compressors work?  What maintenance do they need?  How clean should the air be?  How do I safely fill cylinders?  Answers to all these questions and more while you learn how to do it on this 1 day course!

Mixed Gas Blender                                                 Prices

The gas blender course covers the mixing and preparation of mixes such as Nitrox, Trimix and Heliox - in fact it is what you need if you are involved in preparing gas mixes for diving. You also need the certificate if you want to buy the gases from the major gas supply comanies.  The course covers theory and practical mixing and analysing.


This course teaches the skills and theory needed to increase your safety in the 40 to 50 metre range with the use of normoxic trimix.  Gas mixtures with an oxygen content between 20% and 23% are described as normoxic.  Anyone currently diving in the 40 to 50 metre range on air should consider this course to enhance your safety by lowering narcosis levels and reducing gas density breathed at depth.

The course can be extended by a further day to gain the Explorer Mixed Gas certificate, enabling diving to 60 metres.