Tug Line Force - Pivot Moment

Turning moment generated by a tug pulling at a given position - used to evaluate effectiveness of stern / bow tugs during manoeuvring.

TugPivotMoment

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

M = F \cdot d \cdot \cos\alpha

Symbol	Meaning	Unit
$F$	Tug pulling force	kN
$d$	Distance from pivot	m
$\alpha$	Line angle from perpendicular	deg

Source: Hensen - Tug Use in Port

Turning moment generated by a tug pulling at a given position - used to evaluate effectiveness of stern / bow tugs during manoeuvring.