noun, noun which may take the genitive case particle 'no'
Refers to the open ocean far from land, often used in compounds like 遠洋漁業 (pelagic fishing) or 遠洋航海 (ocean voyage).
遠洋漁業は厳しい規制の下で行われている。
Pelagic fishing is conducted under strict regulations.
彼は遠洋航海に出る前に家
He said goodbye to his family before setting out on an ocean voyage.