Thanks hugely for taking the time to answer so comprehensively, SS. I hope a whole bunch of people read your reply to gain some appreciation of the labour of love that this shipnames list represents. And this is only one aspect of the input into this game that you and others make - it beggers belief.
I can say, 'Amen to that!' when you say I have no clue as to the 1000's of hours you have put into this. And that is on top of what iambl has done. I am burned out just skimming through the list - talk about the snow flake on top of the iceberg - there certainly is a whole LOT more underneath it!
So, among other things, if I am getting this correctly, it seems that it is desirable to go ahead and amend my SHIII/data/sea/EnglishNames.cfg file to change "M10A=Hog Islander" back to "M10A=Medium Merchant" and ADD a new designation to the list, "Hog Islander=Medium Merchant", on the premise that a German sub Kapitan really wouldn't really give a stuff about place of manufacture of his target showing up in his scope (though, actually, having the scope tell him ANYTHING other than, maybe, "Ship", is a bit, well, soft.)
Must go and annoy Bigboy about the S-Class - seems unjust that the Septic Tanks have all THEIR sub's name's listed when the poor old Poms don't get a mention. (Mind you, the Brit's may not have expected their subs to last long enough to be bothered naming or even numbering them.)