Also called freeboard. The vertical height from the water surface to the deck of a ship. As the draft deepens, the freeboard becomes smaller, and the danger increases in rough weather, so in order to ensure a safe freeboard, the method of determining the waterline when fully loaded is stipulated. → Full load waterline mark Source : Heibonsha Encyclopedia About MyPedia Information |
フリーボードとも。水面から船の甲板までの鉛直高さ。喫水が深くなれば乾玄は小さくなり,荒天時など危険が増すので,安全な乾玄を確保するため満載時の喫水線の定め方が規定されている。→満載喫水線標
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