I posted a version above that I found in the Folksinger's Wordbook. It has this chorus:

Jack is every inch a sailor;
He'll see a pretty girl and hail 'er.
He'll vow his love will never fail 'er,
Then go sailing with his heart still free.

Anybody know of a recording of this version, preferably one I can find on YouTube. I found a Frank Crumit recording, but that's not the one:

https://www.youtube.com/watch?v=sNzNlXZFsiI