CMA_Decky’s correct about PotBS, it’s far from a ship sim.
Years ago I used Virtual Sailor, which was at that time the best ship sim (for the home PC) that I’ve seen. I just googled it and it appears to be still available and “recently” up to date (looks like the last version update was in 2007).
homepage: http://www.hangsim.com/vs/
a number of user created tall ships:
http://www.hangsim.com/vs/boats.php?dzone=bsail
I had like version 1.x, so my knowledge of the program is very out of date. It had limited real-world “training” use, but did have a very good sailing model (wind/waves (no current), sail rigging). One nice feature was you could use real-world DEM maps (I had created a Puget Sound region) so you can create areas to sail that might be familiar or of interest (can add in nav aids, visual references).