Amazing work! I'm a big fan of pirates, endless blue seas, and the spirit of adventure - and this game provides all of that! I loved everything — the voice-made sound design (especially when the game denies an action), the music, the art style!
As for the theme - I was genuinely scared to press the "Set Sail" button. Do I have enough cookies? Will there be pirates?
It was a bit confusing at first, but once I realized how to make money, it started to feel really good.
I encourage you to make a full version - perhaps with a distinct crew that you get to know during adventures? Imagine sidetracking to an island to learn a bit more about your crewmates and stuff. I yap a bit too much. This game reminded me of Divinity: Original Sin 2 for some reason and I got all excited :D