deck (of a ship)
「甲板」 has another reading with different meanings.
甲板に出て海を眺めた。
I went out on deck and gazed at the sea.
強風で甲板に立っていられなかった。
I couldn't stand on deck due to the strong wind.
船の甲板で夕日を見るのが旅の楽しみだ。
Watching the sunset from the ship's deck is a pleasure of the trip.