I think the little ships should have cannons and five health.
Each hit by a cannon would take away one health from the ship.
When the ships health reaches zero, it sinks.
Of course there would have to be some way of making new ships.
Also, there would have to be a limit on the number of ships made at one time. So there isn't 100 ships in the water.
If all goes as planned, we coould have naval battles.
