Hi UnicornBuster,
Thank you for your effort so far on a promising app. Here is some data for you that i hope helps. On trips from Charleston to Rio Seco in a surprise using the snow ship setting ... The actual time was exactly double what your program predicted. This was also the case for the reverse trip. The simulation said 25 mins and it took 50 mins actually in the game. However I noticed that the IG wind in the simulation made 2 + rotations while actually in the game the wind only did 1 rotation. I hope this data is is some help to you. Keep up the great work
Cheers Snakemac