Re the Bold Navigators and industrial songs.The English canal world, as far as I know, has always been singularly lacking in traditional song about itself. Plenty of singers,step dancers, melodeons and fiddles to be sure on the boats, and plenty of people also wrote songs to celebrate the opening of certain canals, etc etc.But I don't think they ever caught on much with the boaties. Emma Vickers(Burscough, Lancs) had one "The Cruise of the Calibar", but I have a feeling that songs like that were the exceptions that proved the rule.I expect there always were a few songs coming on line, but they would be socially local, and ephemeral.
   I'd love to hear different, and be proved wrong. I'm a canal man myself, and would relish a few more old songs to sing. But the fact is, 99% of the songs about canals I hear at jovial boatie get-togethers are recent Ye Old Days stuff written by modern leisure or residential boaties, rather than passed on by the old working boaties.