That's a good start for a turn-based sailing game, although it's a bit confusing to control at the moment. I understood general direction but not to the point of know where exactly I'll end up. It would be helpful to explain how to move in a graphical way (I'm thinking of the classic "how does this chess piece move" diagram type) or at least a ghost image of my next position when I select a direction.
Another nitpick is that night time makes wind direction very low contrast. Otherwise it's pretty good for a small prototype, especially in two days.
(also I had to rate audio even though there's no sound because itch wouldn't let me save without it)