• foued-cuttlefish-divers-trawangan-dive.jpg
  • foued-turtle-and-divers-trawangan-dive.jpg
  • jen-rinjani-trawangan-dive.jpg
  • trawangan-dive-boat-in-the-water.jpg

As your motivation to explore progresses you will find that you may want to go deeper to dive that wreck that is part of history or that cave system that you have read so much about.


One of the major limiting factors of going deeper is narcosis; TDI’s Trimix Diver course shows how to minimize the effects of narcosis by adding helium to offset the nitrogen in your breathing gas. While taking the Trimix Diver course your TDI Instructor will teach you how to plan and execute dives utilizing normoxic levels of oxygen (18% or higher) and diving to maximum depth of 60 meters (200 feet) with a blend of helium appropriate for the planned depth. The course covers topics and skills like:

  • Dive team planning
  • Gas matching
  • Cylinder labeling
  • Surface marker deployment
  • Equipment configuration
  • Thermal protection options
Course Prerequisites:
  • Advanced Nitrox Diver
  • Decompression Procedures Diver
  • 100 dives
  • 18 years of age
Additional Costs & Course Information:
  • Gas: Price Extra
    • Approximate gas cost US$150 per dive
    • Helium price based on per fill liter of gas
    • Travel and Deco gas price based on mix
    • Student must also pay for Instructors gas
  • Equipment: Price Extra
  • Time: 4 days
  • Dives: 4 dives
Diving ActivityPrice (IDR)
Trimix Diver 12,350,000

Tec Diving Extras and GasTank Size (litres)
Tec Equipment: Wing, Backplate, Regulators Rental (per dive) null
Buddy Evolution Rebreather Rental (per day) null
O2 fill for Rebreather (100%) - Fill pressure 130 2
Twin Tank fill up to 28% O2 21.8
Twin Tank fill over 28% O2 21.8
Deco Gas 41%-60% 2.6
Helium (per fill litre of gas) null
PADI CDC Career Dive Professional

Aqualung Partner Centre