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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Displacement–length ratio ： ウィキペディア英語版 Displacement–length ratio 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 in long tons (2,240 pounds) by the cube of one one-hundredth of the waterline length (in feet): :$\backslash mathit\; =\; \backslash frac)\; ~/~\; 2240\}\; ))^3\}.$ 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 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Displacement–length ratio」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.