With the careful planing, your Battleship can easily take down smaller ships as well as take care of heavier opponents. They posses a large number of battery turrets, meaning that you can combine different types of the light and heavy weapons, depending on the battles you might be the part of. They might be slow, but their hull and shield strength as well as their firepower accommodate for their lack of maneuverability. Battleships are the backbone of any large fleet.
