Tec Trimix Course in Thailand | Advanced Technical Diver Training in Khao Lak
Tec Trimix Training with Professional Diver Training
Take the next step beyond air and accelerated decompression with Tec Trimix training in Thailand at Professional Diver Training in Khao Lak.
Tec Trimix is designed for experienced technical divers who want to safely extend depth limits, reduce narcosis, and improve gas management during deeper decompression dives. Training is conducted by Ed Bosworth in the deep-water environments of the Similan and Andaman Sea region, giving divers real-world technical diving experience in open water conditions.
Whether your goal is deep exploration, expedition preparation, or progressing toward advanced trimix certifications, this course provides a structured pathway into mixed-gas technical diving.
What Is Tec Trimix?
Tec Trimix introduces divers to the use of helium-based breathing gases for deep technical diving.
By replacing part of the nitrogen in your breathing mix with helium, trimix helps reduce narcosis and improve mental clarity at depth. Divers learn to plan and conduct staged decompression dives while managing multiple cylinders, gas switches, emergency protocols, and advanced dive planning procedures.
This course bridges the gap between recreational technical diving and deeper expedition-style technical diving.
Why Train in Khao Lak?
Training in Khao Lak gives divers access to excellent deep-water environments and real-world technical diving conditions in the Andaman Sea.
Advantages include:
- Deep reef and wreck environments
- Warm water conditions year-round
- Calm seasonal conditions during the Similan season
- Real open-water decompression diving
- Access to advanced technical diving infrastructure
- Guidance from an active technical diving instructor
Rather than completing all training in confined quarry conditions, divers gain practical experience in genuine tropical technical diving environments.
Tec Trimix Course Overview
During the course you will develop experience with:
- Trimix gas planning
- Helium-based breathing mixtures
- Multi-cylinder technical configurations
- Accelerated decompression procedures
- Deep technical dive planning
- Team protocols and communication
- Bailout and emergency management
- Gas switching procedures
- Oxygen exposure management
- Technical dive execution under real conditions
Training combines theory development, confined skill refinement where necessary, and multiple open-water technical dives.
Equipment Configuration
Divers may train using either:
- Backmount twinset configuration
- Technical sidemount configuration
depending on previous certifications and experience.
Typical equipment includes:
- Twin cylinders or sidemount system
- Stage/decompression cylinders
- Primary and backup regulators
- Dive computers suitable for trimix
- DSMB and backup DSMB
- Technical exposure protection
- Primary and backup lights
- Wet notes/slates
- Spools and reels
Equipment guidance can be provided before the course begins.
Prerequisites
Tec Trimix candidates should already be experienced technical divers with strong buoyancy control and decompression diving experience.
Recommended prerequisites typically include:
- Tec 50 or equivalent certification
- Recent decompression diving experience
- Comfort using multiple cylinders
- Good situational awareness and team diving skills
- Appropriate medical fitness for technical diving
If you are unsure whether your current experience level is suitable, contact us and we can advise on the best progression route.
Who Is This Course For?
Tec Trimix is ideal for divers who want to:
- Progress beyond Tec 50 level diving
- Reduce narcosis during deeper dives
- Prepare for advanced trimix or expedition diving
- Build confidence in mixed-gas decompression procedures
- Improve technical diving safety margins
- Develop deeper dive planning skills
- Continue toward advanced technical certifications
Technical Diving Progression Pathway
Many divers progress through the following pathway:
Additional sidemount and cave pathways may also be integrated depending on your long-term technical diving goals.
Frequently Asked Questions
How deep is Tec Trimix training?
Depth limits depend on certification level, standards, conditions, and instructor assessment. Training focuses on safe mixed-gas procedures and progressive depth development.
Do I need to own technical diving equipment?
No. Rental technical equipment may be available, although experienced divers often prefer to train in their own configuration.
Can I train in sidemount?
Yes. Technical sidemount configurations may be used depending on experience and previous certifications.
Is Tec Trimix suitable after Tec 50?
Yes. Tec Trimix is a natural progression for divers who already have decompression diving experience and want to begin mixed-gas diving.
Do you offer further trimix progression?
Yes. Additional advanced technical and trimix progression options may be available depending on experience and instructor availability.
Contact Us About Tec Trimix Training in Thailand
If you are interested in progressing into mixed-gas technical diving, contact Professional Diver Training to discuss:
- Course dates
- Equipment requirements
- Experience prerequisites
- Technical diving progression
- Private training options
- Trimix pathway planning
We can help you build a safe and realistic progression plan based on your current experience level and technical diving goals.
Further Technical Progression
After Tec Trimix, divers may continue toward Tec Trimix 65 or Tec Trimix 90 depending on experience, goals, and instructor assessment. Experienced professionals can also discuss Tec Deep Instructor development.