Photo by Teemu Virtanen · CC BY-SA 3.0
OC Tech (100m)Generic
Hypoxic (100m)
Last updated September 7, 2026
Technical trimix diving using hypoxic blends (below 21% oxygen) to reach depths around 100 m, where a normoxic mix would otherwise become unsafe. Involves multiple gas switches and extensive decompression planning.
No instructors or dive centres found offering this course.
We're still building out the directory country by country, so this list isn't every instructor or dive centre teaching it in the world — more locations are coming soon.