Wonderful! I love a game with narrative and exploration like this. Reminds me a whole lot of Sunless Sea, a game I'm very fond of.
I think there are some issues with the UI, mainly the text being very small in comparison to the boxes it draws in, and navigating the menus with the mouse but the boat with the keyboard felt like a bit of an odd disconnect. But the core gameplay loop is fun and I really liked getting little side stories on the islands.