Marine Hull Resistance: catamaran|Cb0.48|Rn10e7.5
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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| catamaran|Cb0.48|Rn10e7.5 | 0.55 | 0.00228 | 0.00231 | 7.5 | 18 | 1.4 | 0.48 | 0.0004 | 1.22 | 9 | High-speed catamaran ferry Fn=0.55; transition to semi-planing; wave interference decreasing | 0.007 | 0.0004 | 0.011502 | 0.007 | 3.2 |
| catamaran|Cb0.48|Rn10e7.5 | 0.65 | 0.00228 | 0.00231 | 7.5 | 15 | 1.4 | 0.48 | 0.0004 | 1.22 | 9 | High-speed cat Fn=0.65 | 0.0055 | 0.0004 | 0.009802 | 0.0055 | 3.2 |
| catamaran|Cb0.48|Rn10e7.5 | 0.8 | 0.00228 | 0.00231 | 7.5 | 15 | 1.4 | 0.48 | 0.0004 | 1.22 | 9 | High-speed cat Fn=0.80; planing catamaran operation | 0.004 | 0.0004 | 0.008502 | 0.004 | 3.2 |
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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 rowsplaning_hull|Cb0.42|Rn10e7.03 rowscatamaran|Cb0.50|Rn10e8.03 rowsSWATH|Cb0.45|Rn10e8.03 rowssailing_yacht|Cb0.38|Rn10e7.03 rowsbarge|Cb0.90|Rn10e8.03 rows