Bah. I wanted to like it, but sadly the bug with the cannons stopping semi-randomly was just too much in the end. After several restarts (couldn't find any other way to retry than to restart the whole game) I got to level 11 and felt like I was doing pretty good and then both of my cannons just ignore the enemy ship. Considering how clunky it was to select a pirate and move him around of course I was dead long before I could move them away and then back. I guess it could just be something I'm not getting about the game though, as it also seemed like sometimes the pirate below the deck just wouldn't repair the ship, nor would the pirates actually go all the way to where I clicked and instead just stopped randomly on the deck.
Great aesthetic (although the cannon sounds are a bit much) and the gameplay is so close to being fun that it's a real shame it was or at least felt so buggy.
Edit. I'm also still not sure what you can buy from the level 5 pier for 50 coins. A stat upgrade or something? I wasn't sure but I just kept buying it on all of my runs :P.