Collision Energy Absorption (DNV)

Bow-to-side collision kinetic energy at impact: E = ½ · M_eff · V² between two ships of different size.

StructuralCollision

Loading calculator…

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

E = \tfrac{1}{2} M_\text{eff} V_\text{rel}^2, \quad M_\text{eff} = \frac{M_1^* \cdot M_2^*}{M_1^* + M_2^*}

Symbol	Meaning	Unit
$M_1^, M_2^$	Effective (added) masses	t
$V_\text{rel}$	Relative speed at impact	m/s

Source: DNV-RP-C204 - Structural design against accidental loads

Bow-to-side collision kinetic energy at impact: E = \u00bd \u00b7 M_eff \u00b7 V\u00b2 between two ships of different size.