@vanjast
@P_Funk
In-game + pencil/paper + simple as possible = my goal.
The biggest challenge to this will be the almanac I suspect. I am using a computer program currently for convenience. But I also went to the other extreme of solving the nautical triangle directly using only a table of logarithms, no calculator. Using presolved almanacs is the middle path, and probably historically accurate. Hopefully we can use an existing publication and not have to make a custom one from scratch.
@LemonA
That is pretty cool. I will have to check that out. Does it accept degree minute format?
That reminds me that we need a ruler to better measure lat lon coordinates for reporting or plotting on paper. I made one once and I will do that next.