Interesting concept, music is good.
Couldnt figure out how to get more sticks.
The text under the game is not in English.
There is no indication when you hit a boat with your attack, maybe make it blink a bit?
Up and down dont work, if you want to move up, you have to also hold left/right direction key with the up/down.
Could be executed better, but it is still a finished game and no major bugs/crashes occured.
Good job delivering a working game and also don't stop making games. Most developers stop on their 1st one. Break the norm!