​Instead of the victory condition being king of the hill, assign the strongest/highest promoted ship to be the Capital ship of the fleet. If that ship is destroyed, the battle should end in a loss. If the ships all have the same strength/rank, then Capital status goes to which ever vessel is the oldest in the fight. This will not only make naval fights more strategic and realistic, but also immersive as it incentivize players to immersive themselves in their flotilla with names.