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{{Orphan|date=February 2009}}
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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. (Rousmaniere, 1999)
 
A DLR is calculated by dividing a boat's [[displacement (fluid)|displacement]] in [[long ton]]s (2,240 pounds) by the cube of one one-hundredth of the waterline length (in feet):  
 
:<math>\mathit{DLR} = \frac{\mathit{displacement}(\mathrm{lb}) ~/~ 2240} {(0.01 \times \mathit{LWL}(\mathrm{ft}))^3}.</math>
 
The 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.
 
==References==
* Rousmaniere, J,  The Annapolis Book of Seamanship  Simon & Schuster, New York, New York,  Chapter 1:  The boat p26-35, 1999. ISBN 0-684-85420-1
* http://www.sailingusa.info/design_winds.htm
 
{{DEFAULTSORT:Displacement-length ratio}}
[[Category:Ship measurements]]
[[Category:Nautical terms]]
[[Category:Engineering ratios]]
 
 
{{Shipbuilding-stub}}

Revision as of 05:32, 4 March 2014

I would like to introduce myself to you, I am Jayson Simcox but I don't like when individuals use my full name. North Carolina is exactly where we've been living for many years and will by no means move. One of the issues she loves most is canoeing and she's been performing psychic phone readings it for quite a whilst. Office supervising is my occupation.

My blog post :: accurate psychic phone readings predictions (http://www.january-yjm.com/xe/index.php?mid=video&document_srl=158289)