Well, its got a big gun at the front protected from the sides top and bottom by plates of armor extending forward around the actual emitter. Then it has several rings of armored plates angled towards the back with turrets on them, arranged with quadrilateral symmetry. At the end, for spikes extend forward. The whole ship overall has a cylindrical appearance.
That's the best I can describe it with words.
Simply put: A cylinder with spikes and plates all over it.