MOB Response Calculator

Calculate search pattern radius, drift, and time to hypothermia for man overboard situations

Input Parameters

Results

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Est. Drift Distance
nm
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Search Radius
nm
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Hypothermia Onset
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Est. Survival Time

Reference

MOB drift: leeway ≈ 3% of wind speed + current Hypothermia onset by water temp (°C): <2°: <15min | 2-5°: 15-30min | 5-10°: 30-60min 10-15°: 1-2hr | 15-20°: 2-7hr | >25°: indefinite PFD doubles survival time