Tec Trimix 65

What’s it about?

The Tec 65 is the first level trimix course open to certified Tec 50 divers. It introduces Tec divers to trimix diving to a max depth op 65 m. qualified divers are able to make multi-stop decompression dives that employ EANx and oxygen for accelerated decompression, and use any trimix with an oxygen content of 18% or more as bottom gas.

What you need to be/do BEFORE joining the course

• Be a PADI Rescue Diver (or hold a qualifying certification from another organization and having proof of CPR and first aid training with the previous two years).
  
• Be certified as a Tec 50 (or hold a qualifying certification from another organization)
  
• Be at least 18 years old
  
• Have logged at least 100 dives
  
• Have a medical form signed by your physician.
  
• What you’ll be doing
  
• Conduct Open circuit trimix dives with 18% or more oxygen to a max depth of 65 m, with a PO2 of 1.4 or less and an END of 40 m or less.
  
• Plan and execute at least five trimix decompression dives using various trimix blends
  
• Use decompression software to create custom dive tables and dive plans
  
• You will use the Tec Trimix diver manual and crewpack and discuss
  
• Helium advantages and disadvantages
  
• Bubble Models and deep stops
  
• Trimix diving depth ranges
  
• Exposure planning
  
• Selecting a mix
  
• Argon inflation systems
  
• Handling three or four decompression cylinders
  
• Decompression models
  
• Emergency procedures
  
• Face masks and multi-gas computers
  

Crew-Pak

The Tec Trimix Diver Crew-Pak includes all required materials, including: manual, deep stop calculation table, trimix decal and emergency procedures slate.

Gear and stuff you’ll need and dive with

• Double cylinders (minimum 12 liter each, with larger preferred) with isolator manifold
  
• Primary and secondary regulators, one with two meter/seven foot hose (approximately) for gas sharing, and one with SPG
  
• Stage/decompression cylinders with regulator, SPG, mounting hardware and proper labeling/markings. Two per diver will be required
  
• Backup decompression cylinders as appropriate and required for the environment
  
• BCD and harness – redundant buoyancy control is required (double bladder BCD or dry suit if suitable for weight of equipment worn)
  
• Depth gauge/computer and backup depth gauge/computer
  
• Timing device and backup timing device
  
• Trimix decompression information (tables/trimix computer) and backup decompression information
  
• Exposure suit appropriate for environment and dive duration. (If you use a dry suit, you should be trained/experienced with its use in recreational and technical diving prior to using it for trimix training or diving.)
  
• Argon dry suit inflation or other inflation system as needed
  
• Weight system (if needed)
  
• Jon line (if needed for current diving environments)
  
• Inflatable signal tube
  
• Reel
  
• Lift bag (bright yellow or per local community practice preferred)
  
• Dive knife / cutting device and backup slate, backup mask (optional)
  
• Compass, lights (optional)
  
• Drift kit (if drift decompressing)