Photo by Teemu Virtanen · CC BY-SA 3.0
OC Tech (40m)Generic
Deco 40
Last updated September 7, 2026
Decompression procedures course capped at 40 m, teaching staged decompression diving on a single deco gas: dive planning, gas management, and in-water procedures for controlled ascents with required stops.
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.