The Zepplin-class Strike Cruiser is the Federation's first post-war model cruiser. It's purpose is to work as an all-around cruiser for galactic-wide enforcement. It's long range and has the ability to land and deploy massive numbers of ground equipment.
I'm loving the ultra smooth hull of this new cruiser, the bridge slot at the front is also neato.
Your new cannon design is great, much better than those minifig lever parts you used to use.
As for the engines.. get back to work and find a replacement for those wheels! ;-)