Английская Википедия:Displacement–length ratio

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

The displacement–length ratio (DLR or D/L ratio) is a calculation used to express how heavy a boat is relative to its waterline length.[1]

DLR was first published in Шаблон:Cite book[2]

It is calculated by dividing a boat's displacement in long tons (2,240 pounds) by the cube of one one-hundredth of the waterline length (in feet):[3]

<math>\mathit{DLR} = \frac{\mathit{displacement}(\mathrm{lb}) ~/~ 2240} {(0.01 \times \mathit{LWL}(\mathrm{ft}))^3}</math>

DLR can be used to compare the relative mass of various boats no matter what their length. A DLR less than 200 is indicative of a racing boat, while a DLR greater than 300 or so is indicative of a heavy cruising boat.

Displacement DLR
ultralight under 90
light 90 to 180
moderate 180 to 270
heavy 270 to 360
ultraheavy 360 and up


See also

References

Шаблон:Reflist


Шаблон:Shipbuilding-stub