I have no experience in this kind of thing, but I opened the campaign scr file just to have a look at what it contains. Would I be correct in saying that this file is what allows the game to generate ships, etc in certain locations and decides things like probability of appearance, dates of appearance, etc? As I said, this is all a bit new to me so don't give me too much of a hard time. So, would I have to make changes to this folder even just to place the British Vospers in the game, let alone the Irish I intend to put in? We only had 6 of them by 1941 so I'd have to put a very low entry in. Any help would be great and thanks to mr chris and bigboywooly for the help already given.