渡わたりに船ふね

expression, noun, noun which may take the genitive case particle 'no'

godsend; lifesaver; timely help; windfall

Idiomatic expression meaning a piece of good luck or a helpful coincidence that arrives just when needed, like a boat appearing when you need to cross a river.

• 彼かれが手伝てつだってくれるなんて、渡わたりに船ふねだ。

  It's a godsend that he's going to help me.

• この求きゅう人じんはまさに渡わたりに船ふねだった。

  This job offer was truly a timely piece of luck.