# Displacement-Length Ratio

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Displacement-Length Ratio

The displacement-length ratio (DLR) is a calculation used to express how heavy a boat is relative to its waterline length.

A DLR is calculated by dividing a boat's displacement in long tons (2,240 pounds) by one one-hundredth of the waterline length (in feet) cubed:

:$mathit\left\{DLR\right\} = frac\left\{mathit\left\{displacement\right\}\left(mathrm\left\{lb\right\}\right) ~/~ 2240\right\} \left\{\left(0.01 imes mathit\left\{LWL\right\}\left(mathrm\left\{ft\right\}\right)\right)^3\right\}.$

The DLR can be used to compare the relative heaviness of various boats no matter what their size.

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