The game is fun, but the mechanics are not explained properly. I had to figure a lot of things out through logic and trial and error. I figured out what the attacks did, but even after finishing the game I'm still not sure what the value in attacking the sails is and therefore never did it. Also I found in the endgame I had a lot of gold just lying around, and dynamite was really really over powered. I had a group of upgraded ships that were the third battle (right) ships from the top, and I killed the final boss in two turns spamming dynamite and the attack that does the most damage to the ships hp, making for a very anti climactic end. What's the point in having the stronger ships if you can just use the money on dynamite and win that much easier? I probably could have won with much lower tier ships using this method.
I know I said it before but I'll stress this again. EXPLAIN your mechanics. I want to actually know what my stats DO before I invest in them to find out.