vanjast,
it's fantastic to see your mod developing more and more !
Do you have a source for a nautical star almanac from 1939-45 - with all the necessary data of major fix stars?
I wonder if its possible to get a position fix by method of shooting 3 stars "nautical triangle". I don't know how accurate SH3 models the position of all the stars from years 39-45, maybe you know more about this vanjast?