40m
13m - 38m
Boat
Advanced
40m
13m - 38m
Boat
Advanced
Deep, Other, Drift
Boat
40m
13m – 38m
Advanced
21% – 28%
O213% at 38m / 29%
O2No photos yet.
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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.
Eddy Pull-Off Zones — Eddies behind structures can pull divers away from the main drift line.
Delayed Surface Pickup — Strong current can exceed surface tracking assumptions, delaying boat pickup.
Vertical Current Shear — Currents may vary by depth, causing vertical separation even when divers stay together.