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Permeability of a space in a ship is the percentage of empty volume in that space. Permeability is used in ship survivability and damaged stability calculations in ship design. In this case, the permeability of a space is a percentage from 0 to 100. Alternately, the permeability may be a coefficient from 0 to 1. The permeability of a space is the percentage of volume of the space which may be occupied by seawater if the space is flooded. The remaining volume (filled with seawater ) being occupied by machinery, cargo, accommodation spaces, etc. ==Example== Typical values from the International Bulk Chemical Code are: * 0.95 for voids (empty spaces), tanks, and living spaces * 0.85 for machinery spaces * 0.60 for spaces allocated to stores. This implies that for damaged stability calculation purposes, machinery spaces are only 15% full with machinery by volume (100% - 85% = 15%). 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「Permeability (nautical)」の詳細全文を読む スポンサード リンク
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