ITTC 1957 - Friction Coefficient

Flat-plate friction coefficient per ITTC 1957 formula - the basis for model-to-ship extrapolation of frictional resistance.

ITTCFrictionRe

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

C_F = \frac{0.075}{(\log_{10} Re - 2)^2}

Symbol	Meaning	Unit
$Re$	Reynolds number V·L/ν

Source: ITTC 1957 - Friction line

Flat-plate friction coefficient per ITTC 1957 formula - the basis for model-to-ship extrapolation of frictional resistance.