I really like the art and the concept of trading and building a fleet. I just feel like it's too slow paced though, especially for a game jam game. I'm sitting almost blowing at the screen to make my ships sail faster. I also felt like the theme was not very incorporated, maybe there should be storms often to quicken up the pace of the game. It's a beautiful game with the art and clouds and I like the sound effects and music. It's very polished and I'm impressed how much you've managed to do in a week.
Good work!