google-site-verification: google2beaea1f85a42589.html


4 days - £795 - Includes Instructor's Gas!
DISCOUNT for two or more!




Course Outline


Helium has lots of advantages as a breathing gas, it’s lighter with less molecules therefore we absorb less inert gas extending our bottom time & offsetting narcosis. We calculate equivalent air/narcotic depths & maximum operating depths giving us our required mixes, towards the end of the course you'll be in the water with three different gas mixes. 

These training programmes comprise of either RAID DECO 60, TDI Trimix or the PADI Tec 65 trimix course. At this level the training courses are almost identical across the board with exception of the course materials. It is felt that every agency has something to bring to the party and with our multi-agency experience you can be certain of top notch instruction.

You'll learn the following:

  • Equipment selection & preparation.

  • Advanced dive planning.

  • END/EADs

  • CNS & OTUs

  • ICD

  • Deco gas choices

  • Emergency and contingency planning.

  • Decompression diving procedures.

    • Drills & skills including shutdowns and DSMB deployment.

    • Following a decompression schedule.

    • Multiple gas switching & accelerated deco procedures with 2-3 stage cylinders.

    • Team awareness and communication.



  • RAID Deco 50, TDI Decompression Procedures or PADI Tec 50 OR equivalent.

  • Have a minimum amount of decompression dives/time underwater.

  • Hold an in date first aid certificate (we can help with this too!).

Knowledge Development

On-line training materials for RAID, manuals for PADI/TDI to work through with dedicated teach-ins prior to the final stages of the course.

Course duration & cost

4 days - £795

Extra day - £230 

What is included?

Helium is a massive variable here (typical normoxic trimix gas fill for a twin 12 price being circa £80!). The price you see is the price you pay with no hidden extras such as some others who insist on 'dive costs' & 'instructor's gas cost' and we will offer considerable discount for two or more on the course! Includes: 

  • Course materials.

  • Decompression stage cylinder & regulator rental.

  • Certification Fee.

  • Instructor's gas & entry (if applicable).

What is not included?

At this level, you’ll be responsible for all your own gas fills but not your Instructor's! Travel to and from the training locations and open water sites are your responsibility. If the course culminates at NDAC Chepstow there's an entry fee payable directly to the centre. If you wish to complete your course in warmer climes, call us.

What’s next?

No doubt you’ll be thinking about progressing from this level for a specific reason, perhaps to explore rarely ever dived shipwrecks and divesites or to get involved in an exploration project – Exciting stuff, we talk from experience! You’ll be eligible once you’ve acquired the necessary pre-requisites in dives & time in the water. Might be time to invest in a rebreather, CCRs are definitely the future! 

Get Involved

Morriston Leisure Centre, Swansea

07515 878 378

Your details were sent successfully!