The first model is the Tumithak Mk.I:

Next is the Tumithak Mk.IIIa, which is equipped with retractable main guns and a redesigned nose.


I figured out how to animate sections doing this one. Besides the retractable guns, the upgraded plasma cannon on the nose has a recoil that I think came out rather nicely.
This one's the Tumithak Mk.V, which sacrifices most of its main weaponry for one immensely powerful beam weapon that takes up the entire nose:


(In case you're wondering, the missing designations were "failed prototypes.")
The Tumithak class also includes an unarmed heavy freighter:

(which is perfect for target practice)
And naturally, it wasn't long until the Tumithak freighter fell into the hands of pirates:

So . . . what do you think?