Technical Curriculum

Helitrox

The TDI Helitrox Diver sequence develops decompression planning and execution using helium-containing mixes to reduce narcosis while maintaining disciplined staged ascent behavior.

Course focus

Training covers theory, methods, and in-water procedures for staged decompression dives to a maximum depth of 45m / 150ft. You will work through gas requirements, oxygen/nitrogen/helium limitations, decompression gas selection, and contingency procedures for real-world technical dives.

Prerequisites

Minimum age 18
Minimum certification of SDI Advanced Diver (with Deep specialty) or TDI Intro to Tech Diver, or equivalent
Certified as TDI Advanced Nitrox Diver (unless taught concurrently)
Proof of 50 logged dives

Outcome

Graduates are prepared to conduct helitrox and nitrox decompression dives within training limits using breathing mixes with no greater than 35% helium and up to 100% oxygen for decompression. This class also sets a direct foundation for Extended Range, Advanced Wreck, and Trimix progression.

Progress beyond basic decompression limits

Share your certification history and recent dive experience to map your Helitrox timeline and prep work.

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