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Isolated danger mark : ウィキペディア英語版 | Isolated danger mark An Isolated Danger Mark, as defined by the International Association of Lighthouse Authorities, is a sea mark used in maritime pilotage to indicate a hazard to shipping such as a partially submerged rock. It is recognisable by its black and red bands and top-mark of two black balls. Its distinctive sequence of flashing white light consists of 2 quick flashes with intervals of 5 seconds. ==See also==
* Navigation * Lateral mark * Cardinal mark * Safe water mark * Special mark
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「Isolated danger mark」の詳細全文を読む
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