Really enjoyed this!! As someone with zero sailing experience it took me a little while to get used to the controls, but I managed to amble my way through to the end :)
All the visuals slot in nicely with each other and are arranged really well, as is the audio! The highlight for me was the controls, it's a really unique system and is much more complex than most other ship controllers I've seen. The instructions for sailing upwind were a bit confusing, but looking back they did point me in the right general direction. Once I worked it out, though, it was a super creative movement system that felt very complete as far as jam movement goes!
Combat was quite difficult, multitasking the movement of the ship, dodging the rocks and lining up the cannons was challenging, but satisfying when pulled off correctly. I get the impression that's what you were going for rather than simple combat, and it came out really nicely! The whole game felt really complete, it was short but well-contained and I didn't really feel like I was missing anything by the time I reached the end.
Scrounging a bit for some feedback, though, it was a little difficult to read the fullness of the sails, especially when they were parallel to the wind. I'm not entirely sure how to enhance this while keeping everything diegetic and not adding some out-of-place UI, possibly adding some extra wind lines around the sails depending on how full they are? I also had a bit of trouble with the aiming of the cannons at times, it seemed like the angle of fire was changing depending on the movement of the ship but I couldn't figure out what was actually causing that change, and kinda just had to keep trying until it all lined up. I did also notice one minor bug: when a small amount of damage is done to the ship, it won't repair itself until more damage is dealt- you're just stuck with some minor damage until the next hit (though this could be just visual).
Overall, really nice game, very few criticisms! Had a great time playing around with this one :)))