Halcyon
NAUI Helitrox Diver is a technical course for divers learning to use helium-enriched EANx breathing mixtures for staged-decompression dives. The official NAUI page states that the course covers helium-enriched EANx mixes with 21% to 30% oxygen and no more than 35% helium for dives to a maximum depth of 52 meters or 170 feet. It also includes staged decompression using EANx mixtures and/or oxygen during decompression.
This course is intended for divers who are already moving into technical decompression procedures and need to understand why helium changes planning, narcosis, decompression, gas logistics, and cost. NAUI?s public page lists a minimum age of 18. Exact enrollment prerequisites should be confirmed with the instructor, especially when Helitrox is combined with Technical Decompression Diver training. Students should already be comfortable with technical equipment, precise buoyancy, gas-switch discipline, and written dive plans.
Training normally includes academic mixed-gas planning, equipment preparation, staged-decompression procedures, and open-water technical dives. In High Springs, Florida, Helitrox Diver can be a logical step for divers who want improved clarity and better gas choices on deeper technical dives before moving into trimix. The expected outcome is a diver who can approach helium-enriched EANx with realistic planning, oxygen-awareness, decompression discipline, and better respect for gas selection.