This is an awesome game! One suggestion I would have is for the Lighthouse to start with its lights off each night, so I don't waste fuel. Another would be that, for the nights that end without us being able to light the last few ships, there should be an "overtime", or it just shouldn't count against us in the results screen. In the image below, there were two ships that I could have lit if I had more time, but the ending counted it against me.
Other than that, the game is, again, great!