The course
The next step for experienced Explorer divers. The SNSI Explorer Diver 1 Extended course introduces you to normoxic Trimix: adding helium to your bottom mix lowers the density of the gas you breathe at depth and, as an added benefit, keeps your mind clearer, down to 200 ft / 60 m. You refine your planning, your gas management and your decompression with EAN50 and oxygen, building the experience that leads to Explorer Diver 2.
Course structure
What's included.
- Minimum Age
- 18 years
- Maximum Depth
- 200 ft / 60 m
- Bottom Mix
- Normoxic Trimix (O₂ ≥ 18%)
- Travel & Deco Gases
- EAN50 and/or oxygen
- Configuration
- Backmount or Sidemount
- Required Experience
- At least 10 decompression dives deeper than 130 ft / 40 m, 2 of them in the last 2 months
Prerequisites
One of these combinations
- 1Explorer Diver 1 or equivalent
- 2Sidemount Explorer Diver 1 and Essential TEK Diver (or equivalent)
Duration
16–30
hours
Open Water Dives
3
minimum
Materials and apps
Your course, in your pocket.
SNSI Media Hub
The free library with the apps for your courses.
Scan to download
MySNSI
Digital logbook, certifications and check-list.
Scan to download
Continue the journey
Your next adventure.
Ready to start?
Find an SNSI dive center and book your Explorer Diver 1 Extended course.