also: ふなぬし
shipowner
Refers to the owner of a vessel, typically in commercial or legal contexts.
その船主は貨物船を三隻所有している。
That shipowner owns three cargo ships.
船主 is the formal/legal term for a shipowner, whereas オーナー is a casual loanword for an owner often used for boats, shops, or teams.
shipowners' association
Standard kanji form; the most common reading is せんしゅ.
Rare reading; せんしゅ is overwhelmingly more common.
Compound of 船 (ship) and 主 (master/owner). The reading せんしゅ is the standard Sino-Japanese on'yomi combination.