Tom Paxton's "Who Will Feed The People?" but I can't find the lyrics for you. It's on "One Million Lawyers" and some other albums of his.

SALT WATER FARM
Words and Music by Tom Rowe

He was well into his sixties when I first heard Grampa's dream;
A farmhouse by the sea and some roots in the land,
He never got the farm, what he got was a machine,
In a factory at the edge of town and broken, calloused hands.
It stole away his years and the music from his ears;
And left him so he couldn't even hear the factory horn.
Still he said someday he knew he'd get his way,
And end up his days on a salt water farm.

        Salt water farm, salt water farm,
        A little bit of heaven, just a house and a barn.
        Mornins we'd go fishin', work the fields in the afternoon;
        And as the evening tide rolls in there'd be songs beneath the               moon
        And later I would take you in my arms,
        And listen to the sounds of our salt water farm.

He said he'd have a cow, some chickens and a hog;
A barn filled up with hay and a boat down in the cove.
Later in the fall he'd go hunting with the dog.
Winter nights he'd sit around and read beside the stove.
Well he was always kind of poor and he could have dreamed for more,
Than a place where he would still have to work with his hands.
But that never was his way and I can still hear him say,
"Son, a man is at his best between the sea and the land."