This is the Thor class graviton/anti-graviton pulse cannon. It is a new innovation in weapons technology. It is specialized to deliver high power sheering forces to the hull of an enemy ship. This weapon is one of the most destructive weapons in the galaxy.
First, the graviton/anti-graviton generation matrix creates a gravimetric field. The field is then extended out of the barrel. These cannons have a firing rate of 1 shot/barrel/s. These fields are alternating graviton/anti-graviton fields, causing the target ship's hull to be forced in two directions suddenly, shearing it and breaking up its structure.