Environmental Controls
4.5°C (40.1°F)
Sub-5°C currents cause rapid thermal dissipation 25× faster than air.
45 min
Scene take length including continuity camera resets.
28 km/h
Surface convective chill on wet stunt performer torso and neck.
High (8 METs)
1=Passive float, 5=Moderate swim, 8=High struggle/fighting current.
78 kg
Determines thermal mass buffer and total metabolic burn.
Physiological State & Safety Metrics
ISO 11079 Cold Stress StagingHigh - Mandatory Safety Rotation Required
Mild Hypothermia (Shivering, Vasoconstriction)
ACTION REQ
Core Temp
35.2°C
95.4°F
Safe Limit
30min
Before <35.0°C cutoff
Caloric Burn
620kcal
Shivering + METs
Effective Wind Chill
2.4°C
Exposed skin index