ὁ μὴ πεπλευκὼς οὐδὲν ἑόρακεν κακόν → anyone who hasn't sailed has never seen trouble
οῦσα, όν :part. ao.2 de *εἴδω.
ἰδών: -οῦσα, -όν, μτχ. του εἶδον.
ἰδών: ἰδοῦσα, ἰδόν part. к *εἴδω.