Yeerk Pool ship

The purpose of a Yeerk Pool ship,also called a "Mothership" is to offer a mobile command centure and base. The Pool ship is like a spaceflight capable city. Its weapons can be used to ignite a planets atmoshpere and burn away most things on the surface. Or,they can be set to full power and turn a planet into an asteroid field. The entire Pool ship is very heavily armored,the best place to strike it would be at the base of the "legs" or the top of the main hull,which gives you a chance of damaging the bridge. The huge sensor arrays on the bottom are also vulnerible to weapons fire,but the main weapons of the Pool ship surround them.