The IANTD Advanced Recreational Trimix Diver program qualifies divers to perform hyperoxic (> 25% oxygen) trimix dives to maximum depth of 48m while using helium in the breathing mix to reduce the narcosis experienced on the dive to the equivalent of a 24m air dive, as well as air or nitrox dives to 42m. You will also learn to perform required decompression stops up to 15 minutes in duration using nitrox mixtures up to and including 100% oxygen as a decompression gas.

What do I need to start?

• Nitrox Diver
• Deep Diver
• 30 logged dives
• 18yrs or 15yrs with parent/guardian authorisation

What will I do?
You will complete the IANTD Tek Lite theory with your instructor, including content on oxygen exposure tracking for technical & gas switch dives, equipment set up & configuration, physiology & decompression as well as a gas switch decompression dive planning workshop. Specific to the IANTD Advanced Recreational Trimix diver course you will learn to plan dives on trimix and choosing an appropriate trimix dive with the appropriate narcotic depth for the dive of your chose.

You will then move to our 5.5m indoor heated pool (or a suitable confined water site abroad) where you will learn the skills required to safely conduct decompression, gas switch dives using a twinset and stage cylinder. This session also gives you the perfect opportunity to put the equipment changes made in the workshop to the test.

The IANTD Advanced Recreational Trimix diver program culminates in 4 open water dives, at least two of which will be on Recreational Trimix mixes, during which you will demonstrate your ability to safely conduct at least two decompression dives to a maximum depth of 48 meters, including a switch to a rich nitrox mix to accelerate your required decompression. On each these dives you will carry out the drills which technical diving makes possible, including shut downs which enable you to deal with catastrophic gas loss in a safe manner and end your dive in a controlled manner. In doing so you will be becoming a self sufficient diver able to deal with buddy separation and/or equipment malfunctions. Completion of the course requires passing the IANTD Advanced Recreational Trimix diver exam, please note that the certification fee is not included and must be purchased upon successful completion of the course at a fee of £25.

For divers wishing to complete the course on a rebreather (semi-closed or closed-circuit) additional skill requirements may apply, depending on the type of rebreather. Please contact us for details.

For divers already holding the IANTD Advanced Nitrox Diver certification you need only complete the two trimix dives and the trimix portion of the dive theory.

Whats next?
For holders of IANTD Advanced Recreational Trimix diver certifications, you may choose to continue down the trimix route with the IANTD Normoxic Trimix Diver (a trimix qualification offering diving to 60m/200ft with Trimix's narcosis reduction) course, or earn the IANTD Technical Diver air and nitrox (55m/180ft) certification.