I was thinking about "Blowin' in the Wind" recently, and it occurred to me that the following two lines need a bit of explanation.

"How many seas must a white dove sail
Before she sleeps in the sand?"

I did a bit of surfing to see how these lyrics were being intepreted, and interestingly, most explanations that I came across avoided tackling this section of the song.
One person said that it related to the dove that Noah sent out in the Bible to see if the flood has diminished and dry land existed.
But as the dove finds dry land - or evidence of it - pretty quickly it doesn't fit in with the rest of the question asked in the song.

I took it to be the white dove of peace but why is a bird sailing on the seas - and not flying through the skies?
I quick explanation could be that the bird of peace is likened to a ship ploughing a violent sea and trying to find a safe, peaceful landfall.
But that seems rather strained.