Yesterday fieldwork journey with an experienced Tech Diver. We begin a research project on Risk Management, exploring the psychological aspects of this kind of very, very technical diving. These divers go deep, more than 60 meters deep and up to 100, 120, sometimes 140 meters. They breathe special mixes of Oxygen, Nitrogen and Helium - called Trimix. The day is sunny but the water is cold : 6 to 4 Celsius degrees (around 41 °F). Preparation work requires more than one hour, and you'll understand why below.
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| Beautiful spot : Thun lake, near Interlaken |
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| Rebreather ready for use - 25 kg |
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| Testing the back up air tanks. Redundancy is the word. |
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| Testing if the diving suit is water-resistant |
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| The compass |
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| Putting the rebreather on |
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| Backup air tanks and life line ready |
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| Ready to go - bye bye |
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