It does give you an excellent indication of where the ships went. Yes, Spanish shipping is not shown much, but when it does pop up, it goes to Spanish areas. Like Dutch shipping going to Curacao or the Dutch East Indies. I was surprised at how far out from west africa shipping went when it was going to India.
Sorta kinda. You don't see stuff like the triangle trade represented well, or at all. You also don't see things like fishing, whaling, or military actions, which were a big part of sailing at the time.
