I am afraid not, Joe - nothing so complicated. It wasn't the one I found either. There seems to be a number of hymns with that title. However, with the help of a mate, I have tracked it down. There's a version on Leadbelly's 'Last Sessions' on Folkways. It has the same simple structure as the union song with verses like:
It has landed many thousand (3) Get on board! Get on board!
I will sit right down when I get home(3) Get on board! Get on board!
I am sure someone will be able to post the full lyrics. I do not have the album, but I can borrow it from my friend if no one can supply.