Thank for the feedback, I'm glad you liked it! Indeed the ships do have different characteristics. I was going for a simple game but with some deeper strategy elements for those who are a bit more invested.
The flying off the map is another design desicion for strategy reasons. If you want to intercept an enemy unit you would need to throw your ship further, but if you throw it too far it will explode. I obscured the force calculation for the same reason. You have to develop an intuition for the applied force. However, I know I didn't communicate the throwing mechanics properly. I wanted to add an arrow or some kind of force indicator but I ran out of time.
Again, thanks for playing and your feedback! I appreciate it :)