Expanding sphere generator

The ESG is a weapon used by the lyrans and by some orion pirates. The ESG is used as a defensive tool used to block incomeing projectiles like missles. It puts a sphere of energy around the ship it is charged like a phaser capactior it's size is controlled by a setting the smaller the size the more powerful it is.It's offensive pourpose is to ram enemy starships.Only the ship useing the ESG knows where it is taking the enemy by suprise.It is also effective against hydran Stinger fighters.