I love the setting, and the game is quite intuitive to pickup after a few tries sailing around. I really like the trade elements mixed with the risk of combat, which makes for a good mix of elements.
I found it quite easy to get loads of cash by finding two ports close to each other and exploiting the price difference between buying and selling. A ship weight limit might have made this harder.
Overall a really nice entry and it would be super interesting to see where such a game could end up.
Great job.