Where do these contacts come from?

[tbarak]

Well I guess you can "imagine" they're from a lot of sources. For example other u-boats or German ships or maybe even spies. I think I read somewhere they were actually "dev helpers". The developers had a fear people may sail around without ever encountering anything so now and again you get these mysterious contact reports. No complaints from me since seeing those nice convoys appear on the map seems like a God-send.