船せん尾び材ざい

noun

sternpost; body post

Nautical term for the main vertical timber or structural member at the stern of a wooden ship, to which the rudder is attached.

• 船せん尾び材ざいは船ふねの後こう端たんにある重じゅう要ような構こう造ぞう材ざいです。

  The sternpost is an important structural member at the rear end of a ship.