Marine Hull Resistance: planing_hull|Cb0.42|Rn10e7.0
Ship hull resistance coefficients for resistance prediction: ITTC 1957 friction line, Schoenherr line, Holtrop-Mennen form factors, residuary and wave-making resistance coefficients, and total resistance coefficients. Covers displacement monohulls, planing hulls, catamarans, SWATH, sailing yachts, and barges across Froude numbers 0.10–2.00.
| hull type | Froude number | Cf ITTC57 (dimensionless) | Cf Schoenherr (dimensionless) | Reynolds number log10 (dimensionless) | appendage allowance pct (%) | beam draft ratio (dimensionless) | block coefficient Cb (dimensionless) | correlation allowance Ca (dimensionless) | form factor 1 plus k (dimensionless) | length displacement ratio (dimensionless) | notes | residuary resistance coefficient Cr (dimensionless) | roughness allowance Cf (dimensionless) | total resistance coefficient Ct (dimensionless) | wave making coefficient Cw (dimensionless) | wetted surface coefficient (dimensionless) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| planing_hull|Cb0.42|Rn10e7.0 | 0.5 | 0.00272 | 0.00275 | 7 | 15 | 3.5 | 0.42 | 0.00035 | 1.05 | 5.5 | Small high-speed craft Re=10^7; lower Cf; typical patrol boat or RIB hull | 0.009 | 0.0004 | 0.01392 | 0.009 | 2.1 |
| planing_hull|Cb0.42|Rn10e7.0 | 0.75 | 0.00272 | 0.00275 | 7 | 12 | 3.5 | 0.42 | 0.00035 | 1.05 | 5.5 | Small craft Fn=0.75 planing | 0.0048 | 0.0004 | 0.00972 | 0.0048 | 2.1 |
| planing_hull|Cb0.42|Rn10e7.0 | 1 | 0.00272 | 0.00275 | 7 | 10 | 3.5 | 0.42 | 0.00035 | 1.05 | 5.5 | Small craft Fn=1.0 fully planing | 0.0032 | 0.0004 | 0.00812 | 0.0032 | 2.1 |
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displacement_monohull|Cb0.75|Rn10e8.03 rowsdisplacement_monohull|Cb0.60|Rn10e8.03 rowsdisplacement_monohull|Cb0.68|Rn10e7.53 rowsdisplacement_monohull|Cb0.56|Rn10e8.33 rowsdisplacement_monohull|Cb0.82|Rn10e8.53 rowsplaning_hull|Cb0.45|Rn10e7.53 rowscatamaran|Cb0.50|Rn10e8.03 rowscatamaran|Cb0.48|Rn10e7.53 rowsSWATH|Cb0.45|Rn10e8.03 rowssailing_yacht|Cb0.38|Rn10e7.03 rowsbarge|Cb0.90|Rn10e8.03 rows