TDI · Instructor Workshop

TDI Advanced Trimix Instructor

The highest open circuit instructor rating, qualifying you to teach helium-based decompression diving.

The TDI Advanced Trimix Instructor course is the highest open circuit instructor rating, qualifying you to teach helium-based decompression diving up to the most demanding levels. Training is delivered over two phases and demands a genuine instructor-level skillset and mindset.

You will train directly with Will Goodman, a TDI Instructor Trainer with over 20 years of experience and a world-record CCR diver, drawing on a depth of real expedition and teaching experience that few programmes anywhere can match.

What you'll learn

  • Teaching helium-based decompression diving to your students
  • Delivering advanced trimix planning and gas selection theory
  • Supervising deep technical training dives safely
  • Human Factors in Diving Essentials, integrated into the programme

Prerequisites

  • Technical Diver certification at the required level
  • Technical diving experience at the required level
  • Prerequisites for students certified at your current level apply

What's included

  • TDI Advanced Trimix Instructor rating on completion
  • Human Factors in Diving Essentials coursework
  • Teaching practice and evaluation across two phases