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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 Weather helm ： ウィキペディア英語版 Weather helm Weather helm is the tendency of sailing vessels to turn towards the source of wind, creating an unbalanced helm that requires pulling the tiller to windward (i.e. 'to weather') in order to counteract the effect. Weather helm is the opposite of lee helm. ==Overview== When a vessel is heeling, the lee side of the hull is more under water than the weather side. The resulting shape of the submerged part of the hull in this condition usually creates a force (a turning moment) that pushes the bow to weather so that it is necessary to pull the tiller to weather to counteract this force. Since a weather helm requires pulling the rudder through the water at an angle to the intended course, it produces drag and retards the boat's progress through the water. In the book "Sailing Illustrated", Patrick M. Royce defines weather helm as simply a "heeling sailboat wanting to come head to wind." The principle is the same whether the vessel is steered by tiller or wheel; turning the wheel leeward gives the same rudder effect as pulling a tiller windward. A slight amount of weather helm is thought by some sailors to be a desirable situation, both from the standpoint of the "feel" of the helm, and the tendency of the boat to head slightly to windward in stronger gusts, to some extent self-feathering the sails. Other sailors disagree and prefer a neutral helm.〔" Some sailors believe that a small amount of weather helm is good, that the rudder at a small angle of attack contributes to the total lift generated by the boat. I contend that the rudder is nothing more than a brake which is applied each and every time it is used. Ideally one wants the rudder to simply follow the boat and not develop any lift and minimal drag." Barney Harris ''The Complete Guide to Albacore Sailing'' http://usaa.albacore.org/members/techniques〕 Weather helm also provides a form of dead man's switch—the boat stops safely in irons if the helm is released for a length of time. 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「Weather helm」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.