Service Allowance - Added Resistance

Service allowance (or "sea margin") applied to trial-condition power to reach design contract - covers weather, fouling, and ageing.

Service allowanceDecarbResistance

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

P_{service} = P_{trial} \cdot (1 + s)

Symbol	Meaning	Unit
$P_{trial}$	Trial power at design speed	kW
$s$	Service allowance

Source: ISO 19030-2 Performance Monitoring

Service allowance (or \