Bollard Pull - BHP Conversion

Bollard pull in tonnes from brake horse power using the empirical BP/BHP coefficient - the quick tug-capability screen.

TugBollard pullBHP

Brake powerkWTug type

Bollard pull: 45.5t

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

BP = k \cdot P

Symbol	Meaning	Unit
$P$	Brake power	kW
$k$	BP/kW coefficient	t/kW

Source: DNV Guide for Bollard Pull Tests

In short

Bollard pull in tonnes from brake horse power using the empirical BP/BHP coefficient - the quick tug-capability screen.

Learn the theory Ship resistance and powering