Wave Bending Moment (IACS UR S11)

IACS UR S11 rule wave-induced bending moments for the North Atlantic reference sea state.

StructuralIACS S11

Length between perpendicularsmBeammBlock coefficient–

Wave BM (sagging): -2,086,656,000kN·m

Wave BM (hogging): 1,944,384,000kN·m

Changing the inputs requires JavaScript. The calculator above shows its default inputs and result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

M_{wv,\text{hog}} = 0.19 \cdot C_1 \cdot L^2 \cdot B \cdot C_B, \quad M_{wv,\text{sag}} = -0.11 \cdot C_1 \cdot L^2 \cdot B \cdot (C_B + 0.7)

Symbol	Meaning	Unit
$C_1$	Wave coefficient
$L$	Length	m
$B$	Beam	m
$C_B$	Block coefficient
$M_{wv}$	Wave bending moment	kN·m

Source: IACS UR S11

In short

IACS UR S11 rule wave-induced bending moments for the North Atlantic reference sea state.

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