Deck - Kohan (English spelling) deck

Japanese: 甲板 - こうはん（英語表記）deck

Deck. A ship's floor, equivalent to the floors of each floor of a building, is divided into upper and lower parts by laying steel or wooden boards on the deck beams, and is the main part where living and working areas, machinery, and cargo are loaded. Structurally, it is responsible for the vertical strength of the hull and is required to be strong and watertight against wind, rain, waves, and sunlight. There are steel decks and wooden decks, and wooden decks are made of hard wood such as teak and zelkova, and soft wood such as pine, cypress, and cedar. On passenger ships, the living areas and passage areas are made of ordinary steel decks. The topmost full-length deck is called the upper deck, and those below it are called the second deck, third deck, etc. Depending on the purpose, location, and shape, there are various names such as bridge deck, promenade deck, boat deck, compass deck, freeboard deck, wave-blocking deck, raised deck, flat deck, and platform deck.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

かんぱん，デッキ。建築物の各階の床に相当する船内の床で，甲板梁の上に鋼板または木板を張って上下に分ち，居住，作業の場所，機械，貨物の積載場所となる主要な部分である。構造上，船体の縦強度を受持ち，風雨，波浪，日光に対して強度と水密性が要求される。鋼甲板と木甲板があり，木甲板にはチーク，ケヤキなどの硬材と，マツ，ヒノキ，スギなどの軟材のものがある。客船では居住区と通行部分は普通鋼甲板とする。最上全通甲板を上甲板といい，それから下方のものを順に第2甲板，第3甲板と呼ぶ。その他用途，位置，形状によって，船橋甲板，遊歩甲板，ボート甲板，コンパス甲板，乾舷甲板，遮浪甲板，隆起甲板，平甲板，台甲板などいろいろな名称がある。

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