9m
5m - 14m
Boat
Beginner
9m
5m - 14m
Boat
Beginner
Night, Inland, Other, Rock, Ice
Boat
9m
5m – 14m
Beginner
21%
O26% at 7m / 36%
O2No photos yet.
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Landmark Misidentification — Familiar sites can become unrecognisable at night.
Light-Induced Tunnel Vision — Focused light beams reduce peripheral awareness.
Depth Perception Errors — Reduced ambient light increases depth perception mistakes.
Thermocline Buoyancy Shift — Sharp thermoclines can cause sudden buoyancy changes.
Instant Visibility Collapse — Sediment disturbance can eliminate visibility immediately.
Late Detection of Structures — Submerged structures may only appear at very close range.
Bubble Trapping Under Overhangs — Rock overhangs can trap exhaled bubbles, reducing visibility and causing disorientation.
Reflected Surge Patterns — Surge reflecting off rock faces can create irregular and unpredictable water movement.
Current Funnel Effect — Narrow gaps between rocks can accelerate water flow unexpectedly.
Misleading Line Tension — Line tension changes can give false cues about exit direction.
Cold-Induced Gas Consumption — Cold stress increases breathing rate and gas usage.
Reduced Failure Tolerance — Minor equipment issues escalate rapidly due to cold and dexterity loss.
