Moreover, is it possible to deduce them from the game files and produce a custom map with them on? Obviously randomly reduce most of them or introduce some sort of scheme where more appear as the war goes on and more lanes are found.
How cool would this be to add into the in-game map.
BTW you obviously are talking about the map that some people got supplied with their games.
This (
http://www.subsim.com/radioroom/showthread.php?t=109549) is a mod where the map that appears on the table in the control room is replaced with the one suplied in the SH4 boxes. You can delve into the mod folder and extract and print out the map if you'd rather do this, then put it on your wasll (like me).