HomeCalculatorsHoltrop & Mennen Resistance

Holtrop & Mennen Resistance

Empirical regression used since 1982 for early-design resistance prediction across bulker, tanker, container, general-cargo, fishing, and tug hulls. Fast, well-calibrated, and the default first pass before any CFD or model-basin test.

DesignResistance

Hull particulars

Waterline length LwlmWaterline beam BwlmDraft TmBlock coefficient Cb–Midship coefficient Cm–Prismatic coefficient Cp–

Condition

Service speedkn

Reynolds Re

1,211,270,770–

Froude Fn

0.163–

Friction Cf (ITTC-57)

0.001495–

Form factor (1+k₁)

1.306–

Wave-resistance Cw (estimate)

0.000004–

Total resistance coefficient CT

0.003452–

Total resistance RT

814.7kN

Formula, assumptions, and limits

$$R_T = \tfrac{1}{2} \rho V^2 S \left[(1+k_1) C_F + C_W\right]$$

$$1 + k_1 = 0.93 + 0.487118 c_{14} (B/L)^{1.06806} (T/L)^{0.46106} (L/L_R)^{0.121563} (L^3/\nabla)^{0.36486} (1-C_P)^{-0.604247}$$

Holtrop & Mennen 1982/84 regression. Cw is approximated here by a simplified Froude-based fit; the full coefficient set (A, B, C, c₁..c₁₅) lives in the original paper. Wetted surface S from Holtrop's S-approximation.

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