My wife's gran sang a song in the early 1950's.She thinks the first lines are.
          "The seed boats are a comin' the sails are in sight
          The seed boats are a comin' there'l be dancing tonight"
We think it refer's to potato seed's being shiped between Western Scotland and Ireland .Column Sands and Magie MacInnes sing a song with the same title and theme writen by Colum, first performed last year (2005)