I think It makes sense that you are aware that the game is unfinished, also I suggest that you avoid using the mouse, it's not for the jam, I have this problem with my game, the graphics are great, and the music too, but why not include some sounds?

The wind sailing feels good, and watching the heading and speed tick over in the corners is oddly satisfying

Interesting sailing

Nice call putting the heading and the speed in the corners, watching it swing from east to north and the number climb as you come round is the pleasure of the sailing on its own. and the wave tiles are dense enough that you can read your drift without anything else on screen. nice job

Totally understandable when you don't end up finishing everything you wanted to make, happens to everyone! What I would add is that it would still be useful if you put in a little description with the mechanics and if there's anything to find, maybe even add some stuff about what you had in mind for the game or maybe parts of the game you started making but didn't have time to implement, stuff like that. Could even be a good exercise in analyzing this project for your own benefit! Remember that you made a game that runs, that on its own is hard enough, so great job!

Really like the art for the npc btw, looks great!