Reserve Buoyancy - Freeboard-based

Reserve buoyancy as a percentage of displacement - the volume above the load-water plane that provides resistance to flooding.

Reserve buoyancyFreeboardLoad Line

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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

RB = \frac{\nabla_{hull} - \nabla}{\nabla} \cdot 100\%

Symbol	Meaning	Unit
$\nabla_{hull}$	Volume up to weather deck	m³
$\nabla$	Displaced volume	m³

Source: Load Line Convention 1966/88

Reserve buoyancy as a percentage of displacement - the volume above the load-water plane that provides resistance to flooding.