I'd thought that... the absence of names is quite suspicious, but I'm looking at it from an English song viewpoint.

I'm sure that if this song was an English one, the chorus would include a bit of 'Hurrah for the Bellerophon' or whatever, along with the two fingers to the other side.

Maybe it's more of a general sketch rather than specific event, but I did find this page about the Seven Years' War. Find 1757 a couple of paragraphs in, there's a note about a candidate naval action...