50m
3m - 9m
Shore
Advanced
50m
3m - 9m
Shore
Advanced
Deep
Shore
50m
3m – 9m
Advanced
21% – 23%
O213% at 48m / 24%
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Gradual Narcosis Onset — Narcosis may develop slowly, making self-assessment unreliable.
Task Fixation at Depth — Cognitive narrowing at depth can reduce awareness of time and ascent rate.
Increased Gas Density Breathing Load — Higher gas density at depth increases work of breathing.