Don't forget, all things Silent Hunter are "flat earthers", literally. Slightly more accurately, you could say that the world is a Mercator Projection, but really, the "globe" is flattened and put on a toilet paper tube... er - paper towel tube... The "sky" is a squished dome, and the stars, sun & moon are "projected on that... somewhat accurate, but not entirely... but your travel distances are distorted by that "tube" of Silent Hunter...
