船せん中ちゅうせんちゅうMeanings1nounon board a ship; aboard a vesselRefers to being inside or on a ship, often used in formal or written contexts.船せん中ちゅうでの喫きつ煙えんは禁きん止しされています。Smoking is prohibited on board the ship.船せん中ちゅうから美うつくしい夕ゆう日ひが見みえた。We could see a beautiful sunset from aboard the ship.