It's not Roud 690 Warlike Seamen or any of the other closely related pieces as these are all engagements with a French MOW and neither is it AB but the commonplace 'Come strike your colours' is in 690. It should be from an earlier piece but not Captain Ward. It should be a well-known ballad if it was part of 'Singing Together'. Of course it could easily be a later imitation.

I'll have a closer look tonight when I've more time. I have a largish collection of the ST booklets.