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Air Resistance - Above-Water Drag

Air resistance force on above-water superstructure given projected frontal area, drag coefficient, and relative wind speed.

Air dragResistanceWind
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Formula, assumptions, and limits

FA=12ρaCDAv2F_A = \tfrac{1}{2} \rho_a \cdot C_D \cdot A \cdot v^2
SymbolMeaningUnit
CDC_DDrag coefficient
AAFrontal projected area
vvRelative windm/s

Source: Isherwood R.M. - 1973; OCIMF Prediction of Wind & Current Loads on VLCCs

In short

Air resistance force on above-water superstructure given projected frontal area, drag coefficient, and relative wind speed.

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